Tomography, Emission-Computed, Single-Photon
A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.
Gated Blood-Pool Imaging
Radionuclide ventriculography where scintigraphic data is acquired during repeated cardiac cycles at specific times in the cycle, using an electrocardiographic synchronizer or gating device. Analysis of right ventricular function is difficult with this technique; that is best evaluated by first-pass ventriculography (VENTRICULOGRAPHY, FIRST-PASS).
The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.
Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
Native, inorganic or fossilized organic substances having a definite chemical composition and formed by inorganic reactions. They may occur as individual crystals or may be disseminated in some other mineral or rock. (Grant & Hackh's Chemical Dictionary, 5th ed; McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Olfactory Nerve Injuries
Sensitivity and Specificity
Polymers of silicone that are formed by crosslinking and treatment with amorphous silica to increase strength. They have properties similar to vulcanized natural rubber, in that they stretch under tension, retract rapidly, and fully recover to their original dimensions upon release. They are used in the encapsulation of surgical membranes and implants.
List of inorganic compounds
Thallium(I) carbonate - Tl2CO3. *Thallium(I) fluoride - TlF. *Thallium(I) sulfate - Tl2SO4 ...
1861 in science
Ernest Solvay develops the Solvay process for the manufacture of soda ash (sodium carbonate). Eduard Suess proposes the former ... March 30 - William Crookes announces his discovery of thallium. Rubidium is discovered by Robert Bunsen and Gustav Kirchhoff, ...
Index of chemistry articles
Tabun Talc Talcum Tantalite Tantalum Tanzanite Teallite Technetium Telluride Tellurium Tennessine Terbium Tetryl Thallium ... cadmium Calamine Calcite Calcium Calcium carbonate Calcium oxide Californium calomel Calorimeter Canfieldite Carbohydrate ... Sir William Ramsay skeletal formula skin Smectite Smoky quartz Soapstone Soda niter sodium Sodium bicarbonate Sodium carbonate ... carbon carbon dioxide Carbon group carbon monoxide carbonate carbonation Carbonic acid carbonyl carboxylic acid Carl Bosch Carl ...
Mining in Tajikistan
Rare metals reserves of gallium, germanium, indium, selenium, tellurium and thallium have been established; some amount of ... Deposits of boron, sodium chloride, carbonates, fluorite, precious and semiprecious stones have also been reported. Among the ... thallium was mined in the 1990s. Some of the rarer minerals are said to be located in the Zerafshan region. Northern Tajikistan ...
Thallium tetrafluoroberyllate can be made by dissolving beryllium fluoride and thallium carbonate together in hydrofluoric acid ... The thallium compound can cut growth on the 001 axis by 99%. The Tuttons salt (NH4)2Mn(BeF4)2.6(H2O) is made from a solution of ...
It displays the +1 oxidation state that all the known alkali metals display, and thallium compounds with thallium in its +1 ... Lithium carbonate is used as a mood stabiliser in psychiatry to treat bipolar disorder (manic-depression) in daily doses of ... and thallium. Two years later, Mendeleev revised his table, placing hydrogen in group 1 above lithium, and also moving thallium ... Thallium is the heaviest stable element in group 13 of the periodic table. At the bottom of the periodic table, the inert pair ...
Thallium(I) acetylenedicarboxylate (Tl2C4O4) decomposes at 195 °C, leaving a residue of pyrophoric thallium powder. ... It is one of several oxocarbon anions which, like carbonate CO2− 3 and oxalate C 2O2− 4, consist solely of carbon and oxygen. ... Ahlers, Ruth; Ruschewitz, Uwe (2009). "Non-centrosymmetric coordination polymers based on thallium and acetylenedicarboxylate ...
Thallous fluoride carbonate was made simply by evaporating a fluoride thallium solution in ethanol and water in air. It ... A carbonate fluoride, fluoride carbonate, fluorocarbonate or fluocarbonate is a double salt containing both carbonate and ... The structure of the carbonate fluorides is mainly determined by the carbonate anion, as it is the biggest component. The ... number of carbonates. For ratios from 1.2 to 1.5 the carbonates are in a flat dense arrangement. From 1.5 to 2.3 the ...
List of minerals recognized by the International Mineralogical Association (T)
519] [no] [no] (IUPAC: diron(II) tetrairon(III) dioxodecahydroxide carbonate trihydrate, Fe2+:Fe3+ = 1:2) Trebiskyite (IMA2019- ... thallium tetrairon [tetrahydro triarsenate] tetrahydrate) Thaumasite (ettringite: 1878) 7.DG.15    (IUPAC: ... tricalcium silicon hexahydro carbonate sulfate dodecahydrate) Thebaite-(NH4) (IMA2020-072) 10.0  [no] [no] Theisite ( ... disodium carbonate monohydrate) Thomasclarkite-(Y) (IMA1997-047) 5.DC.20    (IUPAC: sodium yttrium trihydro ...
List of minerals recognized by the International Mineralogical Association (L)
... thallium arsenide disulfide) Loranskite-(Y) (IMA1987 s.p., 1899) 4.DG.05    (Note: an ill-defined material) ... sodium yttrium carbonate hexahydrate) Leesite (IMA2016-064) 4.0  [no] [no] Lefontite (IMA2014-075) 8.0  [no] [no] ( ... thallium chloride) Lagalyite (IMA2016-106) 4.0  [no] [no] Lahnsteinite (ktenasite: IMA2012-002) 7.0  [no]  (IUPAC: ... thallium aluminium disulfate dodecahydrate) Lannonite (IMA1979-069) 7.DF.40    Lansfordite (Y: 1888) 5.CA.10  [ ...
List of minerals recognized by the International Mineralogical Association (P-Q)
118] [no] [no] (IUPAC: dizinc dihydro carbonate) Paraershovite (IMA2009-025) 9.DF.15  [no]  Parafiniukite (apatite: ... thallium diiron trisulfide) Picromerite (picromerite: IMA1982 s.p., 1955) 7.CC.60    (IUPAC: dipotassium ... dilead dichloro carbonate) Phosinaite-(Ce) (IMA1973-058) 9.CF.15    (IUPAC: tridecasodium calcium cerium tetra( ... sodium tetrahydrogen carbonate borate dihydrate) Qingheiite (alluaudite, wyllieite) 8.AC.15 Qingheiite (IMA1981-051) 8.AC.15 [ ...
List of minerals recognized by the International Mineralogical Association (A)
... dihydro pentaoxide carbonate) Agakhanovite-(Y) (milarite: IMA2013-090) 9.CM.  [no] [no] Agardite 08.DL.15 (IUPAC: REE ... silver dimercury thallium hexasulfa diarsenide) Arsmirandite (arsmirandite: IMA2014-081) 8.0  [no] [no] Arthurite ( ... calcium carbonate) Arakiite (hematolite: IMA1998-062) 8.BE.45    Aramayoite (aramayoite: 1926) 2.HA.25  [ ... dimagnesium dihydro carbonate trihydrate) Artroeite (IMA1993-031) 3.CC.15    (IUPAC: lead dihydro ...
EPA list of extremely hazardous substances
Tellurium hexafluoride TEPP Terbufos Tetraethyllead Tetraethyltin Tetranitromethane Thallium sulfate Thallous carbonate ...
List of minerals recognized by the International Mineralogical Association (S)
... strontium carbonate) StrontiochevkiniteQ (chevkinite: IMA1983-009) 9.BE.70    (Note: it might be Fe-bearing ... hexacopper thallium tetraselenide) Sabelliite (IMA1994-013) 8.BE.65    (IUPAC: dicopper zinc trihydro arsenate) ... thallium disilver hexasulfa tri(arsenide, antimonide)) Sicklerite (olivine: 1912) 8.AB.10    (IUPAC: lithium ... carbonate) Sideronatrite (Y: 1878) 7.DF.20    (IUPAC: disodium iron(III) hydro disulfate trihydrate) ...
List of minerals recognized by the International Mineralogical Association (N)
... sodium beryllium hydro carbonate dihydrate) Nixonite (IMA2018-133) 4.0  [no] [no] Nizamoffite (hopeite: IMA2012-076) 8.0 [ ... thallium(I) iodide) Natalyite (pyroxene: IMA1984-053) 9.DA.25    (IUPAC: sodium vanadium(III) hexaoxydisilicate) ... disodium carbonate) Natroalunite (alunite: IMA1987 s.p., 1902 Rd) 7.BC.10    (IUPAC: sodium trialuminium ... dinickel dihydro carbonate) Numanoite (IMA2005-050) 6.DA.40    Nuragheite (IMA2013-088) 7.0  [no] [no] ( ...
Carlin-type gold deposit
The material in the deposit is altered in a way that the carbonate minerals are either dissolved or converted to the silicates ... The Carlin type deposits show enrichment in the elements gold, arsenic, antimony, mercury, thallium and barium. This enrichment ... The underlying rocks out of which the minerals are dissolved are normally silty carbonates, although also silicates and other ... "Lithotectonic controls on the genesis and distribution of carbonate replacement-type ('Carlin-type') gold zones, east-central ...
... and carbonate are known, as are many chalcogenides. The double salt Tl 4(OH) 2CO 3 has been shown to have hydroxyl-centred ... Like indium, thallium cyclopentadienyl compounds contain thallium(I), in contrast to gallium(III). Thallium (Greek θαλλός, ... and thallium(III). Thallium(III) oxide, Tl2O3, is a black solid which decomposes above 800 °C, forming the thallium(I) oxide ... and is actually a thallium(I) compound. Thallium(III) sesquichalcogenides do not exist. The thallium(I) halides are stable. In ...
An example of the use of sodium carbonate as an alkali is when washing soda (another name for sodium carbonate) acts on ... Gallium hydroxide, indium hydroxide, and thallium(III) hydroxide are also amphoteric. Thallium(I) hydroxide is a strong base. ... Sodium carbonate is used as an alkali, for example, by virtue of the hydrolysis reaction CO2− 3 + H2O ⇌ HCO− 3 + OH− (pKa2= ... White lead is a basic lead carbonate, (PbCO3)2·Pb(OH)2, which has been used as a white pigment because of its opaque quality, ...
Anthony John Downs, (1993), Chemistry of Aluminium, Gallium, Indium, and Thallium, Springer, ISBN 978-0-7514-0103-5 "Scarbroite ... Aluminium carbonate (Al2(CO3)3), is a carbonate of aluminium. It is not well characterized; one authority says that simple ... Although aluminium carbonate is highly unstable, carbonate species readily form on the surface of aluminium oxide when exposed ... There is no evidence that aluminium carbonate is formed in double displacement reactions; soluble carbonates are sufficiently ...
Arsenic trioxide Barium carbonate (sometimes called Witherite) Chloralose (a narcotic prodrug) Crimidine (inhibits metabolism ... Deadly toxic to humans so use should be avoided Thallium sulfate Mitochondrial toxins like bromethalin and 2,4-dinitrophenol ( ... Poison shyness Pesticide Thallium poisoning http://npic.orst.edu/factsheets/rodenticides.html#:~:text=Rodenticides%20are% ...
... can be prepared by the reaction of thallium(I) carbonate with hydrofluoric acid. At 928 K, TlF decomposes ... Thallium(I) fluoride (or thallous fluoride or thallium monofluoride) is the chemical compound composed of thallium and fluorine ... Thallium(I) fluoride is unusual among the thallium(I) halides in that it is very soluble in water, while the others are not. ... "399833 Thallium(I) fluoride 99%". Sigma-Aldrich. Retrieved 2008-06-17. Wiberg, Nils; Wiberg, Egon; Holleman, A. F. (2001), ...
... is the inorganic compound with the formula Tl2CO3. It is a white, water-soluble solid. It has no or very ... "Thallium and Thallium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a26 ... Like other thallium compounds, it is extremely toxic, with an oral median lethal dose of 21 mg/kg in mice. Due to its toxicity ... "Thallium (soluble compounds, as Tl)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for ...
... or carbonate with the appropriate halogen acid. For example, with sodium hydroxide: NaOH + HCl → NaCl + H2O Water may be ... 2x HCl The silver and thallium(I) cations have a great affinity for halide anions in solution, and the metal halide ...
List of minerals recognized by the International Mineralogical Association (C)
... lead carbonate) Cervandonite-(Ce) (IMA1986-044) 9.BE.92    Cervantite (cervantite: IMA1962 s.p., 1850 Rd) 4.DE. ... hexapotassium hexacopper thallium(III) tetrahydro heptadecachloride monohydrate) Chrysotile (IMA2007 s.p., 1834 Rd) 9.ED.15 [ ... diiron dihydro carbonate) Chukhrovite 3.CG.10 Chukhrovite-(Ca) (IMA2010-081) 3.CG.10  [no]  Chukhrovite-(Ce) (IMA1987 ... trisodium strontium phosphate carbonate) Creaseyite (IMA1974-044) 9.HH.15 [1,023] [1,024] [1,025] Crednerite (Y: 1849) 4.AB.05 ...
Period 5 element
This rare, very soft, malleable and easily fusible other metal is chemically similar to gallium and thallium, and shows the ... as an impurity in zinc carbonate. Cadmium occurs as a minor component in most zinc ores and therefore is a byproduct of zinc ...
There are three main classes of superconducting cuprates: bismuth-based, thallium-based and mercury-based. The second cuprate ... The appropriate amounts of precursor powders, usually oxides and carbonates, are mixed thoroughly using a Ball mill. Solution ... ISBN 978-0-8247-0823-8. Dekker, Marcel (28 September 1993). Hermann, Allen M.; Yakhmi, J.V. (eds.). Thallium-Based High- ... containing one CuO2 layer is much larger as compared to the one-CuO2-layer compound of thallium (Tl-1201). In the Hg-based ...
22:21:00 (5, 5, 5) (EDIT) User:CheMoBot (contribs, talk) edited Thallium(I)_carbonate (diff, hist). Added: 'CASNo_Ref ... 22:20:59 (5, 5, 5) (EDIT) User:CheMoBot (contribs, talk) edited Thallium(I)_carbonate (diff, hist). Changed: 'verifiedrevid' (' ...
List of minerals recognized by the International Mineralogical Association (R)
... thallium lead sulfarsenite) RichelliteQ (Y: 1883) 8.BB.90    (IUPAC: calcium diron(III) diphosphate di(hydroxy, ... manganese carbonate) Rhodonite (rhodonite: IMA1980 s.p., 1819) 9.DK.05    (IUPAC: manganese(II) trioxosilicate) ... uranyl carbonate) Rutile (rutile: 1800) 4.DB.05    (IUPAC: titanium(IV) oxide) Rynersonite (aeschynite: IMA1974- ... dicalcium sulfate carbonate tetrahydrate) Rappoldite (tsumcorite: IMA1998-015) 8.CG.20   [no] (IUPAC: lead dicobalt ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... They easily react with carbon dioxide to form carbonates or bicarbonates, or with hydrogen sulfide to form sulfides or ... 28 and thallium compounds with thallium in its +1 oxidation state closely resemble the corresponding potassium or silver ... Thallium is the heaviest stable element in group 13 of the periodic table. At the bottom of the periodic table, the inert pair ...
Barium - Simple English Wikipedia, the free encyclopedia
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Barium carbonate, the other ore of barium, is dissolved in hydrochloric acid to make barium chloride and carbon dioxide. The ... Barium is found as barium sulfate (barite) and barium carbonate (witherite) in the ground. Both of these minerals do not ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... deposits and carbonate-hosted Zn-Pb deposits. A recent study found that at least 10,000 t of extractable germanium is ... Upon melting with alkaline carbonates and sulfur, germanium compounds form salts known as thiogermanates. ...
اکسیژن - ویکیپدیا، دانشنامهٔ آزاد
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... 3, in hematite and rust), and calcium carbonate (in limestone). The rest of the Earth's crust is also made of oxygen compounds ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... "Sedimentary carbonate‐hosted giant Bayan Obo REE‐Fe‐Nb ore deposit of Inner Mongolia, China; a cornerstone example for giant ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... 3, in hematite and rust), and calcium carbonate (in limestone). The rest of the Earth's crust is also made of oxygen compounds ...
Finally, metal oxalate salts release CO upon heating, leaving a carbonate as byproduct:. Na. 2C. 2O. 4 → Na. 2CO. 3 + CO. ... Thallium(III) oxide (Tl2O3). *Thulium(III) oxide (Tm2O3) ... intimate mixture of powdered zinc metal and calcium carbonate, ...
کادمیم اکسید - ویکیپدیا، دانشنامهٔ آزاد
Pyrolysis of other cadmium compounds, such as the nitrate or the carbonate, also affords this oxide. When pure, it is red, but ... Thallium(III) oxide (Tl2O3). *Thulium(III) oxide (Tm2O3) ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Alkaline earth metal carbonates may be removed after reaction with hydrogen chloride; then follow thickening, filtration, and ... Uranium-thorium dating is commonly used to determine the age of calcium carbonate materials such as speleothem or coral, ... carbonates, phosphates, vanadates, molybdates, and chromates, and their hydrated forms. They are important in thorium ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Yellow silver carbonate, Ag2CO3 can be easily prepared by reacting aqueous solutions of sodium carbonate with a deficiency of ... Silver carbonate is also used as a reagent in organic synthesis such as the Koenigs-Knorr reaction. In the Fétizon oxidation, ... silver carbonate on celite acts as an oxidising agent to form lactones from diols. It is also employed to convert alkyl ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... The chromite ore is heated with a mixture of calcium carbonate and sodium carbonate in the presence of air. The chromium is ... Sodium chromate is produced industrially by the oxidative roasting of chromite ore with sodium carbonate. The change in ...
Vitamin K antagonist
Barium carbonate. *Calcium phosphide. *Cyanide. *Thallium sulfate. *Zinc phosphide. Organochlorine. *Chloralose. *Endrin ...
Carlin-type gold deposit
The Carlin type deposits show enrichment in the elements gold, arsenic, antimony, mercury, thallium and barium. This enrichment ... The material in the deposit is altered in a way that the carbonate minerals are either dissolved or converted to the silicates ... The underlying rocks out of which the minerals are dissolved are normally silty carbonates, although also silicates and other ... "Lithotectonic controls on the genesis and distribution of carbonate replacement-type ('Carlin-type') gold zones, east-central ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... silicate and carbonate minerals, such as monazite (MIIIPO4) and bastnäsite (MIIICO3F), where M refers to all the rare-earth ...
Aluminium from group 13 forms carbides, but gallium, indium, and thallium do not. These materials feature isolated carbon ...
Dekker, Marcel (28 September 1993). Hermann, Allen M.; Yakhmi, J.V. (eds.). Thallium-Based High-Temperature Superconductors. ... The appropriate amounts of precursor powders, usually oxides and carbonates, are mixed thoroughly using a Ball mill. Solution ... There are three main classes of superconducting cuprates: bismuth-based, thallium-based and mercury-based. ... containing one CuO2 layer is much larger as compared to the one-CuO2-layer compound of thallium (Tl-1201). In the Hg-based ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... rubidium carbonate (Rb2CO3), used in some optical glasses, and rubidium copper sulfate, Rb2SO4·CuSO4·6H2O. Rubidium silver ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... A flux such as limestone (calcium carbonate) or dolomite (calcium-magnesium carbonate) is also added to the furnace's load. Its ... Carbon dioxide is not evolved when carbonate anions are added, which instead results in white iron(II) carbonate being ... The heat of the furnace decomposes the carbonates to calcium oxide, which reacts with any excess silica to form a slag composed ...
Another method of preparation relies on annealing of lead(II) carbonate (cerussite) in air: 6 PbCO3 + O2 → 2 Pb3O4 + 6 CO2. Yet ... Thallium(III) oxide (Tl2O3). *Thulium(III) oxide (Tm2O3) ...
Barium carbonate. *Calcium phosphide. *Cyanide. *Thallium sulfate. *Zinc phosphide. Organochlorine. *Chloralose. *Endrin ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Chlorides can be made by reaction of an element or its oxide, hydroxide, or carbonate with hydrochloric acid, and then ... by passing chlorine gas through a solution of sodium carbonate. The resulting liquid, known as "Eau de Javel" ("Javel water"), ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... "ammonium carbonate group". Nevertheless, Mg, Ca, Sr and Ba are routinely collocated in Group 2 of the periodic table. See: ... Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Thallium81Tl7002204380000000000♠204.38 Lead82Pb7002207200000000000♠207.2 Bis-muth83Bi7002208980000000000♠208.98 Polo-nium84 ...
Properties of metals, metalloids and nonmetals
Beryllium has the lowest known value (0.0476) amongst elemental metals; indium and thallium each have the highest known value ( ... most occur in combined states, as carbonates, silicates, phosphates, oxides, sulfides, or halides ...
Thallium(III) oxide (Tl2O3). *Thulium(III) oxide (Tm2O3) ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... Other polonium compounds include potassium polonite as a polonite, polonate, acetate, bromate, carbonate, citrate, chromate, ... thallium, lead, and bismuth. Due to the short half-life of all its isotopes, its natural occurrence is limited to tiny traces ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... A variety of zinc compounds are commonly used, such as zinc carbonate and zinc gluconate (as dietary supplements), zinc ... The oldest known pills were made of the zinc carbonates hydrozincite and smithsonite. The pills were used for sore eyes and ... If deposits of zinc carbonate, zinc silicate, or zinc spinel (like the Skorpion Deposit in Namibia) are used for zinc ...
Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium ... The δC-13 and δS-34 of coexisting carbonate minerals and sulfides can be used to determine the pH and oxygen fugacity of the ...
Thallium(I) carbonate - Wikipedia
Thallium(I) carbonate is the inorganic compound with the formula Tl2CO3. It is a white, water-soluble solid. It has no or very ... "Thallium and Thallium Compounds". Ullmanns Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a26 ... Like other thallium compounds, it is extremely toxic, with an oral median lethal dose of 21 mg/kg in mice. Due to its toxicity ... "Thallium (soluble compounds, as Tl)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for ...
Carcinogenicity: (Thallium is a suspected carcinogen.) NTP: No IARC: No OSHA: Yes (as thallium) ... Thallium is highly toxic and a cumulative poison. Thallium affects the heart, kidneys, liver and central nervous system. ( ... When ingested, thallium can cause a metallic taste in the mouth, garlic odor of the breath, gingivitis, inflammation of the ... All routes of entry may produce the following symptoms due to thallium poisoning: loss of hair, hair discoloration, dystrophy ...
Patent US7262158 - Cleansing compositions comprising a liquid silicone and ester mixture - Google Patents
Presence of thallium in the environment: sources of contaminations, distribution and monitoring methods | SpringerLink
Thallium is released into the biosphere from both natural and anthropogenic sources. It is generally present in the environment ... 2015). Thallium speciation and extractability in a thallium- and arsenic rich soil developed from mineralized carbonate rock. ... Thallium in surface and underground waters. The content of thallium in river waters in Poland ranged from 5 to 17 ng L−1. Sea ... The concentration of thallium in igneous rocks ranges from 0.05 to 1.7 mg kg−1 (Lin and Nriagu 1998). Notably higher thallium ...
List of inorganic compounds - Wikipedia
thallium compounds, with the exception of those... - Substance Information - ECHA
Slimes and Sludges, thallium carbonate - 69029-96-5 Expert judgement Thallium (201Tl) Chloride Injection - 55172-29-7 Expert ... Silver thallium dinitrate 247-283-9 25822-21-3 Expert judgement Antimony, compound with thallium (1:1) 249-428-1 29095-38-3 ... Sulfuric acid, thallium(2+) salt - 37475-01-7 Expert judgement Sulfuric acid, thallium(3+) salt (2:1), tetrahydrate - 37667-57- ... Thallium hydrotris(1-pyrazolyl)borate - 34269-45-9 Expert judgement Sulfuric acid, thallium(3+) salt (2:1), dihydrate - 87963- ...
Method for plating printed circuit board and printed circuit board manufactured therefrom - SAMSUNG ELECTRO-MECHANICS CO., LTD.
Thallium carbonate. 10˜50 ppm. Used only in alloy plating. Selenium oxide. 10˜50 ppm. Used only in alloy plating. ... In the gold alloy plated layer, thallium and/or selenium function as an underpotential deposit so as to improve the plating ... of thallium (Ti), selenium (Se) or mixture thereof. 4. The method as set forth in claim 1, wherein the palladium or palladium ... of thallium (Ti), selenium (Se) or mixture thereof. 12. The printed circuit board as set forth in claim 1, wherein the ...
Mitarbeitende - Eawag
Thallium speciation and extractability in a thallium- and arsenic-rich soil developed from mineralized carbonate rock ... Thallium speciation and extractability in a thallium- and arsenic-rich soil developed from mineralized carbonate rock, ... Sorption von Thallium an Bodenmineralen: Einfluss auf das Verhalten von Thallium in Böden. ... We investigated the speciation and extractability of Tl in soil developed from mineralized carbonate rock. Total Tl ...
U-Listed Chemicals by CAS Number · University of Puget Sound
The Calcium Carbonate Content of White to Brown Eggshells - WriteWork
To what extent do white and brown eggshells differ in respect to percentage by mass of calcium carbonate content? Calcium ... carbonate is a substance found in the egg... ... Thallium. THALLIUM My element was Thallium. It is atomic number ... This way I could determine the amount of acid which has reacted with the calcium carbonate, hence, the calcium carbonate ... Thallium has a mass of 204.3833 atomic mass units. Its symbol is Tl. It resides in Group IIIA of the periodic table. That is ...
CAD - Chemical Agents Directive, Article 2(b)(i) - Hazardous Agents - chemagts-worker-protection-hazardous - ECHA
Slimes and Sludges, thallium carbonate EC / List no: - , CAS no: 69029-96-5 ... Thallium telluride (Tl2Te3) EC / List no: - , CAS no: 12040-16-3 Thallium(1+) propan-2-olate EC / List no: 254-386-2 , CAS no: ... Trimethyl thallium EC / List no: - , CAS no: 3003-15-4 Sulfuric acid, thallium(3+) salt (2:1), dihydrate EC / List no: - , CAS ... Thallium telluride (TlTe) EC / List no: - , CAS no: 12040-12-9 m-Toluic acid, alpha,alpha,alpha-trifluoro-, thallium salt EC / ...
Thallium(I) fluoride - Wikipedia
Thallium(I) fluoride can be prepared by the reaction of thallium(I) carbonate with hydrofluoric acid. At 928 K, TlF decomposes ... Thallium(I) fluoride (or thallous fluoride or thallium monofluoride) is the chemical compound composed of thallium and fluorine ... Thallium(I) fluoride is unusual among the thallium(I) halides in that it is very soluble in water, while the others are not. ... "399833 Thallium(I) fluoride 99%". Sigma-Aldrich. Retrieved 2008-06-17. Wiberg, Nils; Wiberg, Egon; Holleman, A. F. (2001), ...
Thallium (Tl) | Thallium
Thallium Bromide TlBr -20 Mesh. 4N. Thallium Carbonate Tl2CO3 -20 Mesh 3N. ... Thallium Rod .500". 5N. Rod is cut to order and sold by the inch or foot. Thallium material is packaged under water. Additional ... Hazards: Thallium and its compounds are extremely toxic and should be handled with great care. Numerous cases of fatal thallium ... In the presence of water, thallium hydroxide is formed. Sulfuric and nitric acid dissolve thallium rapidly to make the sulfate ...
1911 Encyclopædia Britannica/Carbonates - Wikisource, the free online library
All carbonates, except those of the alkali metals and of thallium, are insoluble in water; and the majority decompose when ... calcium carbonate, CaCO3), dolomite (calcium magnesium carbonate, CaCO3·MgCO3), and sodium carbonate, Na2CO3. Most metals form ... lead carbonate, PbCO3), malachite and azurite (both basic copper carbonates), calamine (zinc carbonate, ZnCO3), witherite ( ... CARBONATES. (1) The metallic carbonates are the salts of carbonic acid, H2CO3. Many are found as minerals, the more important ...
Writers Dreamtools - Decades - 1860
Spectral Database Index: Raman - Inorganics - Bio‑Rad Sadtler
Sciencemadness Discussion Board - New chemicals for sale ! - Powered by XMB 1.9.11
Thallium(I) carbonate 10g - 50EUR, 100g - 300EUR. Tin(II) tetrafluoroborate solution 50 wt. % in H2O 250ml - 120EUR. ... Propylene carbonate 500 g - 65 EUR. (−)-β-Pinene 200ml - 30 EUR. 4-Methyl-2-pentanone - 500ml - 32 EUR. 5-Methylresorcinol 25g ... Propylene carbonate 500 g - 65 EUR. (−)-β-Pinene 200ml - 30 EUR. 4-Methyl-2-pentanone - 500ml - 32 EUR. 5-Methylresorcinol 25g ...
EU. Directive 2006/66/EC on batteries & accumulators and waste - batteries-accumulators-waste - ECHA
Product of adding sodium carbonate to solutions in the cadmium plant. Consists primarily of cadmium carbonate with lesser ... Leach residues, zinc refining flue dust, cadmium-thallium ppt. Sponge produced by leaching and precipitating cadmium and ... Product of adding sodium carbonate to solutions in the cadmium plant. Consists primarily of cadmium carbonate with lesser ... Leach residues, zinc refining flue dust, cadmium-thallium ppt. Sponge produced by leaching and precipitating cadmium and ...
ХЛОРИДЫ ТАЛЛИЯ (thallium chlorides): Topics by WorldWideScience.org
Complex carbonates and hydrogencarbonates of divalent metals with alkali elements or thallium THALLIUM$ ... Complex carbonates and hydrogencarbonates of divalent metals with alkali elements or thallium Библиогр.:с.207-217 ; Металлы, ... Thallium and thallium compounds, Перейти к источнику в Интернете: THALLIUM$ ... Complex carbonates and hydrogencarbonates of divalent metals with alkali elements or thallium Металлы, соединения, , месо, , ...
Appendices | St. John's University
NuLegacy Gold Returns Miranda Gold's Red Hill And Coal Canyon Projects - TheStreet
Rocks exposed in the Windmill window are analogous to carbonate rocks that host the Cortez Hills and Pipeline gold deposits. ... mercury and thallium. These features indicate a Carlin-style gold system may be present at Red Hill. ... The project covers a large percentage of the Windmill window, a geologic feature exposing favorable lower-plate carbonate rocks ... Gold mineralization is hosted in silty carbonate rocks associated with altered lamprophyre dikes and high levels of arsenic, ...
Carbonates - The Full Wiki
All carbonates, except those of the alkali metals and of thallium, are insoluble in water; and the majority decompose when ... In geology and mineralogy, the term "carbonate" can refer both to carbonate minerals and carbonate rock (which is made of ... Important organocarbonates include dimethyl carbonate, the cyclic compounds ethylene carbonate and propylene carbonate, and the ... a calcium-magnesium carbonate CaMg(CO3)2; and siderite, or iron (II) carbonate, FeCO3, an important iron ore. Sodium carbonate ...
Fankou Mine, Renhua Co., Shaoguan, Guangdong, China
... occurring in Middle to Upper Devonian and Lower Carboniferous carbonate and argillaceous carbonate formations. Fankou is the ... occurring in Middle to Upper Devonian and Lower Carboniferous carbonate and argillaceous carbonate formations.. Fankou is the ... By-products are copper, tungsten, tin, silver, gold, antimony, mercury, uranium, bismuth, thallium and molybdenum. ... Jianqing Lai, Chuxiong Yang, and Shijun Yi (1989): Sedimentary facies of ore-bearing carbonate rocks in the Fankou Pb-Zn mining ...
DailyMed - HEAVY METAL AMALGA DETOX - allium sat, alumin met, arg. met., aur. met., baryta carb., beryllium, bismuthum met,...
Strontium Carbonate. 20 [hp_X] in 1 mL. Thallium (UNII: AD84R52XLF) (Thallium - UNII:AD84R52XLF). Thallium. 20 [hp_X] in 1 mL. ... Barium Carbonate (UNII: 6P669D8HQ8) (Barium Cation - UNII:V645272HLN). Barium Carbonate. 20 [hp_X] in 1 mL. ... 20x, Thallium metallicum 20x, Titanium metallicum 20x, Carduus mar. 8x, Iris versicolor 8x, Taraxacum 8x, Carduus mar. 3x, Iris ... met., stannum met., strontium carb., thallium met, titanium met, carduus mar., iris versicolor, tarax, carduus mar. liquid ...
Thallium and Thallium Compounds (HSG 102, 1996)
Thallium(I) carbonate Tl2CO3 29809-42-5. 468.78 7.110 273 - white 40.3 (15.5 C) Thallium(I) chloride TlCl 7791-12-0. 239.84 ... The most recent (1980s) concentrations of thallium observed were , 22 g thallium/m3 (in the production of a special thallium ... Thallium and thallium compounds: health and safety guide. (Health and safety guide ; no. 102) 1.Thallium - toxicity I.Series ... Thallium is also secreted in saliva. As with many other substances, the excretion of thallium in humans differs from that in ...
Read the eBook A treatise on chemistry (Volume 3) by Henry E. (Henry Enfield) Roscoe online for free (page 28 of 50)
Thallium salicylate, C 6 H 4 (OH)CO 2 T1, is obtained by neutra- lizing the acid with thallium carbonate ; its hot, ... quantity of thallium hydroxide be added to the solution, the basic salt, C 6 H 4 (OT1)C0 2 T1, separates out in yellow, ... alkaline carbonates and is reprecipitated by acids. It gives no colouration with ferric chloride ; aqueous ammonia converts it ... the acid in potassium carbonate solution, evaporating and ex- tracting the residue with alcohol. It is deposited in needles on ...
Element 81 | Article about Element 81 by The Free Dictionary
Thallous oxide and salts of T1(I) nitrate, sulfate, and carbonate are soluble. Thallium chromate, bichromate, halides (except ... Thallium in the organism. Thallium is always present in plant and animal tissue. Its average content in the soil is 10-5 ... Thallium amalgam, which solidifies at - 59°C, is used in low-temperature thermometers. Metallic thallium is used in the ... Poisoning by thallium and its compounds is possible during preparation and use. Thallium enters the body through the ...
SodiumCompoundsSulfateCalciumNitrateOxideToxicityOresSeleniumBicarbonateAlkaliPotassiumCarbon dioxideSaltsArsenicDetermination of thalliumNormal carbonatesThallousToxicBoronBasic carbonatesMarine CarbonatesDissolveHydroxideMagnesiumInorganicFluorideCopperChemicalExposureAcidCadmiumEthyl carbonateIonsMineralDecomposition1975BerylliumUraniumWidely distributed in nature
- Hence, I carried out Ã Â back titrationÃ Â by adding an excess of hydrochloric acid to dissolve all of the calcium carbonate and then titrating the remaining H3O+ with sodium hydroxide solution. (writework.com)
- Sodium carbonate ("soda" or "natron") and potassium carbonate ("potash") have been used since antiquity for cleaning and preservation, as well as for the manufacture of glass . (thefullwiki.org)
- Exceptions include sodium , potassium and ammonium carbonates, as well as many uranium carbonates . (thefullwiki.org)
- Thus sodium carbonate is basic, sodium bicarbonate is weakly basic, while carbon dioxide itself is a weak acid. (thefullwiki.org)
- Thallium doped Sodium Iodide is a highly luminescent scintillation crystal available in a wide range of sizes. (americanelements.com)
- sodium carbonate, Na 2 CO 3 ( washing soda ), or sodium hydrogen carbonate, NaHCO 3 ( baking soda ) [ Dalton , Lavoisier , Prout , Rayleigh ]. (lemoyne.edu)
- 17, l9 Preparation of sodium and thallium(1) salt8 INTRODUCTION Rather few di- and tri-organolead(1V) derivatives of N-acyl.amino acids have been whilst derivatives of N-acyldipeptides are not The sodium salts of ligands were prepared for comparing their IR data with the IR data of complexes, whilst thallium(1) salts of ligands were used in the preparation of the triphenyllead(1V) complexes. (docme.ru)
- However, metal carbonates are usually basic, e.g. sodium carbonate. (physicsforums.com)
- I am bewildered whether we can call sodium carbonate a base then. (physicsforums.com)
- Moreover, I would like to know the chemical reaction of sodium carbonate representing the production of OH- ions. (physicsforums.com)
- So, is sodium carbonate considered a base? (physicsforums.com)
- Sodium carbonate isn't a Arrhenius base, but it is a Bronsted-Lowry. (physicsforums.com)
- A vanadium ore or vanadiumrich residue is treated with sodium carbonate to produce sodium metavanadate, NaVO 3. (lecoudmain.be)
- I will do this by titrating the sulphuric acid with sodium carbonate. (writework.com)
- Like other thallium compounds, it is extremely toxic, with an oral median lethal dose of 21 mg/kg in mice. (wikipedia.org)
- Thallium and thallium-based compounds exhibit higher water solubility compared to other heavy metals. (springer.com)
- Thallium-based compounds exhibit a high tendency to accumulate in the environment. (springer.com)
- The toxicity of thallium-based compounds is mainly caused by the similarity between thallium (I) ions and potassium ions (Groesslova et al. (springer.com)
- thallium compounds, with the exception of those. (europa.eu)
- Pure thallium exists in nature but is usually found combined with other elements in inorganic compounds. (cdc.gov)
- This document includes nine of the commonly used thallium compounds. (cdc.gov)
- Toxicity data were found for five of these compounds (thallium sulfate, thallium oxide, thallium nitrate, thallium acetate, and thallium carbonate). (cdc.gov)
- Hazards: Thallium and its compounds are extremely toxic and should be handled with great care. (espimetals.com)
- Thallium compounds have a high aqueous solubility and are readily absorbed through the skin. (espimetals.com)
- Thallium is used in low-melting alloys with other metals and in compounds. (thefreedictionary.com)
- WHO Library Cataloguing in Publication Data Thallium and thallium compounds: health and safety guide. (inchem.org)
- PRODUCT IDENTITY AND USES 1.1 Identity The chemical names, chemical formula and CAS numbers of thallium and of some thallium compounds are given in Table 1. (inchem.org)
- Water from sites sampled near outcrops of carbonate-rock aquifer likely has a much shorter residence time resulting in a potential for detection of anthropogenic or land-surface related compounds. (usgs.gov)
- Premium grades of highly pure, low-iron, platy talcs, high-purity calcium carbonates , phlogopite micas, and ground white barium sulfate for high-density compounds. (thefreedictionary.com)
- Thallium and indium form + 1 and + 3 oxidation states when in compounds. (bartleby.com)
- Predict the formulas of the possible compounds between thallium and oxygen and between indium and chlorine. (bartleby.com)
- Sulfuric and nitric acid dissolve thallium rapidly to make the sulfate and nitrate salts, while hydrochloric acid forms an insoluble thallium chloride layer. (espimetals.com)
- Its most important compound is the colourless odourless and tasteless thallium(I) sulfate, previously used on a large scale as a rodenticide. (inchem.org)
- and thallium sulfate cumulatively fed at a dosage of 60 mg./kg. (ajtmh.org)
- In two field control experiments in Puerto Rico, thallium sulfate on sun-dried fresh fish effected about a 90 per cent reduction of the mongoose population at an estimated cost of about 17 cents per acre. (ajtmh.org)
- In another experiment on Pineros Island near Puerto Rico, all adult mongooses apparently were killed by the thallium sulfate poison bait method. (ajtmh.org)
- Thallous carbonate has essentially the same toxicity as thallium sulfate. (rightanswerknowledge.com)
- ABSTRACTDuring my experiment, I have been investigating my research question: Ã Â To what extent do white and brown eggshells differ in respect to percentage by mass of calcium carbonate content?Ã Â Calcium carbonate is a substance found in the eggshells giving them hardness and strength. (writework.com)
- Hence, as calcium carbonate reacts steadily with hydrochloric acid to produce carbon dioxide as well as two other substances, I investigated which type of an eggshell contains more calcium carbonate. (writework.com)
- This reaction cannot be used directly to titrate the calcium carbonate because it is very slow when the reaction is close to the endpoint. (writework.com)
- This way I could determine the amount of acid which has reacted with the calcium carbonate, hence, the calcium carbonate content of a sample of an eggshell. (writework.com)
- The results of the investigation proved my hypothesis that brown eggshells contain more calcium carbonate than white eggshells do. (writework.com)
- The difference between these means and the theoretical value of 95% might have come from such methodological flaws as the calcium carbonate that failed to dissolve or the remnants of the organic inner membrane of an egg. (writework.com)
- Plan I have to investigate the factors that affect a chemical reaction: Calcium Carbonate + Hydrochloric Acid Calcium Chloride + Carbon Dioxide The easiest way to determine a change in the reaction is how much carbon dioxide is given off during the reaction. (writework.com)
- Well-made Fast Delivery Thallium Nitrate .Will come and buy again. (zgshenyu.com)
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- Material may emit toxic fumes of thallium oxide when heated to decomposition. (espimetals.com)
- A heavy layer of oxide builds up on thallium if left in air. (espimetals.com)
- Metal carbonates generally decompose on heating, liberating carbon dioxide and leaving behind an oxide of the metal. (thefullwiki.org)
- The principle tin ore is the oxide cassiterite, SnO 2 , and the principle lead and thallium ores are the sulfides or the products of weathering of the sulfides. (lumenlearning.com)
- no. 102) 1.Thallium - toxicity I.Series ISBN 92 4 151102 8 (NLM Classification: QV 618) ISSN 0259-7268 The World Health Organization welcomes requests for permission to reproduce or translate its publications, in part or in full. (inchem.org)
- The toxic effect of heavy metals on photosynthetic reactions has been reported in wide-ranging studies, however there is paucity of data in the literature concerning thallium (Tl) toxicity. (biomedcentral.com)
- We studied the toxicity of thallium in white mustard ( S. alba ) growing plants and demonstrated that tolerance of plants to thallium (the root test) decreased with the increasing Tl(I) ions concentration in culture media. (biomedcentral.com)
- Based on the presented results we postulate two phases of thallium toxicity on photosynthesis: the non-destructive phase at early stages of toxicant accumulation and the destructive phase that is restricted to the discolored leaf areas containing high toxicant content. (biomedcentral.com)
- There was no distinct border between the two phases of thallium toxicity in leaves and the degree of toxicity was proportional to the migration rate of the toxicant outside the vascular bundles. (biomedcentral.com)
- Derivation: Commercially thallium is produced as a byproduct from the refining of heavy metal sulfide ores. (espimetals.com)
- Dorazio M, Biagioni C, Dini A, Vezzoni S (2016) Thallium-rich pyrite ores from the Apuan Alps, Tuscany, Italy: constraints for their origin and environmental concerns. (springer.com)
- 3. The method as set forth in claim 1, wherein the gold alloy plated layer comprises 99 to 99.99 wt % of gold (Au), and 0.01 to 1.0 wt % of thallium (Ti), selenium (Se) or mixture thereof. (freepatentsonline.com)
- 60-70% of thallium production is used in the electronics industry such as: infrared optical applications, doping selenium semiconductors, high-temperature superconducting materials for applications like magnetic resonance imaging, storage of magnetic energy, magnetic propulsion, electric power generation and transmission, infrared detectors. (espimetals.com)
- The term is also used as a verb, to describe carbonation , the process of, raising the concentrations of carbonate and bicarbonate ions in water to produce carbonated water and other carbonated beverages - either by the addition carbon dioxide gas under pressure, or by dissolving carbonate or bicarbonate salts into the water. (thefullwiki.org)
- It is the conjugate base of the hydrogen carbonate (bicarbonate) ion, HCO 3 − , which is the conjugate base of H 2 CO 3 , carbonic acid. (thefullwiki.org)
- In aqueous solution , carbonate, bicarbonate, carbon dioxide, and carbonic acid exist together in a dynamic equilibrium . (thefullwiki.org)
- In strongly basic conditions, the carbonate ion predominates, while in weakly basic conditions, the bicarbonate ion is prevalent. (thefullwiki.org)
- When the partial pressure of CO 2 is reduced, for example when a can of soda is opened, the equilibrium for each of the forms of carbonate (carbonate, bicarbonate, carbon dioxide, and carbonic acid) shifts until the concentration of CO 2 in the solution is equal to the solubility of CO 2 at that temperature and pressure. (thefullwiki.org)
- 15 . The composition of claim 14 , wherein said effervescent agent comprises carbonate and bicarbonate which react upon hydration of said composition to produce carbon dioxide. (google.es)
- 16 . The composition of claim 15 , wherein said carbonate and bicarbonate are present in said composition at a molar ratio of between 1:1 and 1:9. (google.es)
- The acid carbonates of the alkali metals can be prepared by saturating an aqueous solution of the alkaline hydroxide with carbon dioxide, M·OH + CO 2 = MHCO 3 , and from these acid salts the normal salts may be obtained by gentle heating, carbon dioxide and water being produced at the same time, 2MHCO 3 = M 2 CO 3 + HO 2 + CO 2 . (wikisource.org)
- Like the alkali metals, thallium is concentrated in the upper part of the earth's crust, the granite layer, where its average content is 1.5 × 10 -4 percent. (thefreedictionary.com)
- Only the normal carbonates of alkali metals, ammonium, and thallium are soluble in water. (thefreedictionary.com)
- carbonates of alkali metals and thallium are exceptions. (thefreedictionary.com)
- Hence, the solution of metal carbonates are not considered to be alkalis (since alkali is a subset of base). (physicsforums.com)
- Potassium ethyl carbonate, KO·CO·OC 2 H 5 , is obtained in the form of pearly scales when carbon dioxide is passed into an alcoholic solution of potassium ethylate, CO 2 + KOC 2 H 5 = KO·CO·OC 2 H 5 . (wikisource.org)
- When heated with ammonia it yields guanidine, and on boiling with alcoholic potash it yields potassium carbonate. (wikisource.org)
- aeratus (or saleratus , literally aerated salt): potassium hydrogen carbonate, KHCO 3 . (lemoyne.edu)
- The carbonates are decomposed by mineral acids, with formation of the corresponding salt of the acid, and liberation of carbon dioxide. (wikisource.org)
- Many carbonates which are insoluble in water dissolve in water containing carbon dioxide. (wikisource.org)
- Imperial College London is conducting research on a $70 million project to store carbon dioxide in carbonate rocks in the Middle East. (thefreedictionary.com)
- If true, metal carbonates are not considered as base (carbon dioxide is also formed during neutralization which violates the definition). (physicsforums.com)
- 1) The metallic carbonates are the salts of carbonic acid, H 2 CO 3 . (wikisource.org)
- Most other carbonates are formed by precipitation of salts of the metals by means of alkaline carbonates. (wikisource.org)
- Most carbonate salts are insoluble in water at standard temperature and pressure , with solubility constants of less than 1×10 −8 . (thefullwiki.org)
- Corresponding triphenyllead(1V) derivatives have been prepared in 1:l molar ratio by reaction of triphenyllead chloride with the thallium(1) salts of the amino-acid or the dipeptide. (docme.ru)
- Gold mineralization is hosted in silty carbonate rocks associated with altered lamprophyre dikes and high levels of arsenic, antimony, mercury and thallium. (thestreet.com)
- The maximum contaminant level was exceeded for concentrations of dissolved antimony (6 μg/L) in one sample, arsenic (10 μg/L) in eleven samples, and thallium (2 μg/L) in one sample. (usgs.gov)
- Arsenic values for water range from 0.7 to 45.7 μg/L, with a median value of 9.6 μg/L. Factors affecting arsenic concentration in the carbonate-rock aquifer in addition to geothermal heating are its natural occurrence in the aquifer material and time of travel along the flow path. (usgs.gov)
Determination of thallium5
- The review also includes an overview of analytical methods, which are commonly applied for determination of thallium in fly ash originating from industrial combustion of coal, in surface and underground waters, in soils and sediments (including soil derived from different parent materials), in plant and animal tissues as well as in human organisms. (springer.com)
- The reviewing method was focused on data regarding determination of thallium in environmental samples as well as the employed analytical methods, which were obtained from the following databases: Scopus, Elsevier, Wiley, Springer and Web of Knowledge. (springer.com)
- Batley GE, Florence TM (1975) Determination of thallium in natural waters by anodic stripping voltammetry. (springer.com)
- Das AKM, Dutta ML, Cervera M (2007) Determination of thallium in water samples. (springer.com)
- Escudero LB, Wuilloud RG, Olsina RA (2013) Sensitive determination of thallium species in drinking and natural water by ionic liquid-assisted ion pairing liquid-liquid microextraction and inductively coupled plasma mass spectrometry. (springer.com)
- There exist normal carbonates with a CO 3 2− anion (for example, K 2 CO 3 ), acid carbonates (hydrocarbonates or bicarbonates) with an HCO 3− anion (for example, KHC0 3 ), and basic carbonates [for example, Cu 2 (OH) 2 CO 3 , the mineral malachite]. (thefreedictionary.com)
- Hydrocarbonates are converted into normal carbonates (2NaHC0 3 = Na 2 CO 3 + H 2 O + CO 2 ) upon heating. (thefreedictionary.com)
- Normal carbonates are widely distributed in nature and constitute one of the groups of minerals. (thefreedictionary.com)
- Thallium(I) fluoride (or thallous fluoride or thallium monofluoride) is the chemical compound composed of thallium and fluorine with the formula TlF. (wikipedia.org)
- Thallium is highly toxic and a cumulative poison. (espimetals.com)
- Thallium is toxic even at very low concentrations and tends to accumulate in the environment once it enters the food chain. (springer.com)
- Studies on embryo toxic effects of thallium using the whole embryo culture technique. (cdc.gov)
- Thallium is a very toxic element. (rightanswerknowledge.com)
- Thallium (Tl) is a typical toxic element, whose biological effects and geochemical behavior are closely related with its chemical speciation in the environment. (springer.com)
- Due to use of certain other chemical such as thallium, boron etc. (bestonhealth.com)
- whilst bismuth, copper and magnesium appear only to form basic carbonates. (wikisource.org)
- With the appropriate corrections and minimal concomitants, MC-ICP-MS can reliably determine 206Pb/207Pb and 208Pb/207Pb ratios of marine carbonates and seawater. (mit.edu)
- Acid carbonates dissolve readily in water. (thefreedictionary.com)
- In the presence of water, thallium hydroxide is formed. (espimetals.com)
- 1981. The determination of cadmium, copper, lead and thallium in human liver and kidney tissue by flame atomic absorption spectrometry after enzymatic digestion. (cdc.gov)
- The nodules from sulfide-carbonate-hyaloclastite diagenites are rich in elements sourced from seawater, hyaloclastites and copper-zinc ore clasts. (mdpi.com)
- 1.2 Physical and Chemical Properties Thallium is a soft and malleable heavy metal with a bluish-white colour. (inchem.org)
- Get chemical information updates for CADMIUM CARBONATE sent to your email. (chemchart.com)
- The chemical symbol for Promethium is Pm. Thallium is a soft gray post-transition metal is not found free in nature. (davidclaytonthomas.com)
- Prolonged presence of thallium in terrestrial, aerial and aquatic systems may notably increase the exposure risks. (springer.com)
- 2016 ). Human exposure to thallium is mainly associated with the consumption of contaminated food or drinking water. (springer.com)
- 1988. Urinary thallium: Critical problems, reference values and preliminary results of an investigation in workers with suspected industrial exposure. (cdc.gov)
- The primary purpose of this chapter is to provide public health officials, physicians, toxicologists, and other interested individuals and groups with an overall perspective of the toxicology of thallium and a depiction of significant exposure levels associated with various adverse health effects. (cdc.gov)
- It contains descriptions and evaluations of studies and presents levels of significant exposure for thallium based on toxicological studies and epidemiological investigations. (cdc.gov)
- No studies were located regarding lethality in humans or animals after inhalation exposure to thallium. (cdc.gov)
- No studies were located in humans or animals regarding the effects on the respiratory, hematological, musculoskeletal, hepatic, renal, and dermal/ocular systems after inhalation exposure to thallium. (cdc.gov)
- Thallium is a soft metal that oxidizes readily and dulls rapidly upon exposure to air. (thefreedictionary.com)
- Campanella BM, Onor A, D'Ulivo A, Giannecchini M, D'Orazio R, Petrini E, Bramanti E (2016) Human exposure to thallium through tap water: a study from Valdicastello Carducci and Pietrasanta (northern Tuscany, Italy). (springer.com)
- 2) The organic carbonates are the esters of carbonic acid, H 2 CO 3 , and of the unknown ortho-carbonic acid, C(OH) 4 . (wikisource.org)
- The name may also mean an ester of carbonic acid, an organic compound containing the carbonate group O=C(O-) 2 . (thefullwiki.org)
- Strong acids effect the decomposition of normal and acid carbonates with the liberation of CO 2 (K 2 CO 3 + H 2 SO 4 = K 2 SO 4 + H 2 O +CO 2 ). (thefreedictionary.com)
- Campanella B, Casiot C, Onor M, Perotti M, Petrini R, Bramanti E (2017) Thallium release from acid mine drainages: speciation in river and tap water from Valdicastello mining district (northwest Tuscany). (springer.com)
- Palladium-catalyzed substitution of cyclohex-2-en-1-yl ethyl carbonate with neutral C-, O-, and N-nucleophiles was achieved in 1-2 minutes using microwave flash hearing. (diva-portal.org)
- Low pH of phosphate and carbonate solutions are explained by the hydrolysis of the phosphate and carbonate ions. (physicsforums.com)
- Atmospheric emission and deposition from industrial sources have resulted in increased concentrations of thallium in the vicinity of mineral smelters and coal-burning facilities. (springer.com)
- They exhibit specific accessory mineral assemblages with dominant galena and fahlores, various tellurides and Co-Ni sulfoarsenides in sulfide-black shale, sulfide-hyaloclastite-carbonate, and sulfide-serpentinite diagenites, respectively. (mdpi.com)
- This thallium speciation analysis implied that the dominant Tl (I) species in the river water studied might be due to the weathering of sulfide mineral-bearing rocks, mining, and smelting activities in the studied area. (springer.com)
- The alkaline carbonates undergo only a very slight decomposition, even at a very bright red heat. (wikisource.org)
- 1975. Thallium-201 for medical use. (cdc.gov)
- The alkaline earth metals occur as silicates and, with the exception of beryllium, as carbonates and sulfates. (lumenlearning.com)
- Uranium concentration is reaching a minimum of around pH 6.5 and is increasing at higher pH, which may indicate a formation of neutral and anionic uranyl carbonate species at high pH (and total carbonate levels around 1 mM). (diva-portal.org)
Widely distributed in nature1
- Thallium is widely distributed in nature, but the only minerals rich in the element are crooksite and lorandite. (thefreedictionary.com)