Chemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and Occupations
ColorimetryChemistry, AnalyticAngioscopyThiobarbituratesColorTetrazolium Salts
SpectroscopyChromatographySpectrophotometryTitrationAmmoniaProportionalMetal ionsPhosphorusMembraneNutrientPotassiumTemperatureBanana0.02SalivaryDetectionAnalysesQuantifySpeciationSpeciesResultsDeterminationDissolved oxygenHighLaboratoryDetermineStandardWaterAcceptableMeasureBloodEffectsInvolvesSamplesMethodActivityHigherInstrumentPeoplePropertiesLevelIncreaseResearch
Spectroscopy1
  • UV spectroscopy can be used to quantify the concentration of protein and DNA in a solution. (esotech.org)
Chromatography3
  • Online colorimetry was compared with ion chromatography as a method for the speciation and quantification of the chemical species of P supplied in polyphosphate fertilizers. (edu.au)
  • Ion chromatography was able to speciate all of the P species supplied in polyphosphate fertilizer, whereas colorimetry detected only P in solution as orthophosphate and, by the difference between the measurement of digested and undigested samples, total condensed P species. (edu.au)
  • The detection limit for orthophosphate measured by colorimetry was the same as that measured by chromatography, but the working range of concentrations was considerably greater for chromatography - from 0.02 to 200 mg P L-1 compared with 0.02 to 2 mg P L-1. (edu.au)
Spectrophotometry1
  • In general, metal indicators are utilized for chelate titration, and colorimetric and fluorometric chelating agents are utilized for the determination of the metal concentration by spectrophotometry. (dojindo.com)
Titration2
  • Through the practical tasks in the unit, you will develop proficiency in the quantitative analytical techniques of titration and colorimetry, including learning to calculate the concentration of solutions. (nottinghamcollege.ac.uk)
  • Metal indicators and chelating agents are used to determine the concentration of specific metal ions in solution by chelate titration. (dojindo.com)
Ammonia5
  • The results for ammonia at concentrations of approximately 17 and 35 parts per million (ppm) and flow rates of 0.16 to 0.70 milliliters per minute were discussed. (cdc.gov)
  • Plots of sensor response versus ammonia concentration indicated that the responses were acceptable, even though the plots were not absolutely linear. (cdc.gov)
  • The authors conclude that the real time monitors under development can apparently monitor ammonia for 4 hours at concentrations near the NIOSH recommended standard, 35ppm, with a reasonable degree of specificity. (cdc.gov)
  • [2] The correct concentrations of ammonia and copper sulfate solution needed to synthesize the complex can be determined by colorimetry. (wikizero.com)
  • Precompetitive prototypes for the detection of nutrient analyses using quantitative chemical analysis by colour (colourimetry) for phosphate, ammonia, nitrate and nitrite. (commonsenseproject.eu)
Proportional4
  • When specific reagents are added, the water sample takes on a degree of coloration that is proportional to the concentration of the parameter being measured. (lovibond.com)
  • Up to saturation, each sensor had a linear range of operation which was proportional to the product of flow rate times concentration. (cdc.gov)
  • The change in the absorbance value of the colloid produced is proportional to the concentration of D-arabinitol added, so that the amount of D-arabinitol in the sample can be quantified. (tubitak.gov.tr)
  • 1, 4] The degree of protein glycation is proportional to the concentration of plasma glucose over the lifetime of the protein. (medscape.com)
Metal ions2
  • The amount of NTA complexed with metal ions is dependent on the concentrations of the metal ion, NTA 3- and H + , as well as the formation constants of the various complexes. (canada.ca)
  • To determine the amount of one specific metal ion in the sample solution, masking reagents should be added to remove other metal ions.Table 2 shows popular masking reagents for chelatometry and colorimetry. (dojindo.com)
Phosphorus4
  • The extract must then be analyzed to determine the concentration of the phosphorus. (wikipedia.org)
  • With the addition of the phosphorus extract into a colorimeter, there is visual color change of the solution and the degree to this color change is an indicator of phosphorus concentration. (wikipedia.org)
  • To apply this testing method on phosphorus deficiency, the measured phosphorus concentration must be compared to known values. (wikipedia.org)
  • If the concentration of phosphorus measured from the colorimeter test is significantly lower than the plant's optimal soil levels, then it is likely the plant is phosphorus deficient. (wikipedia.org)
Membrane2
  • The most recent version of ASTM D4378-20 suggests that maintenance personnel should test their in-service turbine oil and monitor the membrane patch colorimetry with a warning limit at ∆E 30. (machinerylubrication.com)
  • This monitoring test is known as ASTM D7843-20 Standard Test Method for Measurement of Lubricant Generated Insoluble Color Bodies in In-Service Turbine Oils using Membrane Patch Colorimetry (MPC). (machinerylubrication.com)
Nutrient1
  • An instrument for measuring nutrient concentrations in the water column by chemical analysis, usually colorimetry, in place in the field. (nerc.ac.uk)
Potassium2
  • According to the model, vacuolar composition, in particular potassium and organic acid concentrations, had an important effect on malate accumulation. (biomedcentral.com)
  • For example, monitoring sodium and potassium ion concentrations in the blood flow is indispensable during cardiac surgery. (dojindo.com)
Temperature2
  • Footnote 4 The rate of biodegradation is largely influenced by acclimatization of the microorganisms, Footnote 8 , Footnote 9 temperature, Footnote 10 , Footnote 11 dissolved oxygen concentration in water, Footnote 12 NTA concentration Footnote 13 and water hardness. (canada.ca)
  • Tyrosinase activity is dependent on various factors such as enzyme concentration, substrate concentration used, temperature, operating pH, and other regulators such as inhibitors and effectors. (rutgers.edu)
Banana2
  • Banana fruit was taken as a reference because it has the particularity of having separate growth and post-harvest ripening stages, during which malate concentration undergoes substantial changes. (biomedcentral.com)
  • Moreover, the concentration of malate in banana pulp varies greatly among cultivars which make possible to use the model as a tool to analyze the genotypic variability. (biomedcentral.com)
0.021
  • Salivary samples never exceeded a median concentration of 0.02% at any time point. (umich.edu)
Salivary5
  • At all post-treatment time points, salivary peroxide concentration was at least 2 orders of magnitude lower than that on the strip. (umich.edu)
  • Sociodemographic and diagnosis variables (presence of dental calculus and periodontal status) were considered to measure salivary concentrations of glucose (by the glucose oxidase/peroxidase method, amylase (by the colorimetric test), urea (by the amount of indophenol), total protein (by the Bradford method) and albumin (by the nephelometric method). (bvsalud.org)
  • Results: Significant relationships were observed between the concentration of salivary urea and periodontal status (p = 0.03) and the presence of dental calculus and urea (p = 0.04) was demonstrated. (bvsalud.org)
  • Conclusions: A relationship between the salivary urea concentration and the presence of periodontal disease and dental calculus is suggested. (bvsalud.org)
  • Concentration of some salivary compounds increases or decreases in patients with periodontal disease because it contains enzymes from periodontal damaged cells, which can be identified in saliva and gingival crevicular fluid 16-17 . (bvsalud.org)
Detection1
  • Sensor module for automatic detection low concentrations of heavy metals (lead, mercury, cadmium, zinc and copper) in seawater. (commonsenseproject.eu)
Analyses1
  • On the basis of the result of uptake analyses, the effects of various concentrations, P-gp inhibitors, chelating agents, and pH values on its bidirectional transport were explored. (alljournal.net.cn)
Quantify1
  • Marine litter sensor to measure and quantify the surface concentration of small plastic particles (microplastics) in the off-shore environment. (commonsenseproject.eu)
Speciation1
  • Footnote 4 Based on one model of NTA metal ion speciation, it is predicted that at a concentration of 25 ppb in river water, 50% of the NTA is complexed with Cu 2+ ions, 34% with Ni 2+ , 9% with Ca 2+ and 5% with Zn 2+ . (canada.ca)
Species3
  • In this activity, students will use colorimetry to determine the concentration of a colored species in a solution and use a linear relationship to model Beer's law. (ti.com)
  • Use colorimetry to determine the concentration of a colored species in a solution. (vernier.com)
  • However, the regulation of vacuolar malate storage throughout fruit development, and the origins of the phenotypic variability of the malate concentration within fruit species remain to be clarified. (biomedcentral.com)
Results1
  • Colorimetry uses colored chemicals, that when added to the water you wish to test, will change the color of the water and can be compared to a results sheet to show an approximation of the DO levels in that water body. (njcola.org)
Determination1
  • The conventional technique for the determination of polyphosphate concentration in solution is measuring the difference between total digested P and initial orthophosphate with colorimetry. (edu.au)
Dissolved oxygen1
High4
  • Keratin is a structural protein, consisting of long chains of amino acids and has a high concentration of cysteine. (science-on-stage.eu)
  • Recently, several reports have focused on the development of metabolically engineered strains that rapidly convert high concentrations of simple sugars to ʟ-ornithine. (biomedcentral.com)
  • The apparent permeability coefficient (Papp ) values of euscaphic acid at low, medium, and high concentrations were (61. (alljournal.net.cn)
  • At high concentrations, insulin may exert potent proliferative effects via high-affinity binding to IGF-1 receptors. (medscape.com)
Laboratory1
  • Located in Pfahler Hall, room 316, the general instrumental laboratory has the primary concentration of instrumentation. (ursinus.edu)
Determine4
  • Colorimetry is used to determine this concentration. (wikipedia.org)
  • They use Beer's law to determine the concentration of iron(III)thiocyanate (FeSCN 2+ ) in an unknown solution. (ti.com)
  • Screening involves the testing of subjects to determine whether their body alcohol concentration (i.e. breath or blood) is above or below some particular defined level (the, so-called, per se level) or even to determine whether they have any alcohol in their body at all. (druglibrary.net)
  • They can be used to determine the metal ion concentration in solutions. (dojindo.com)
Standard1
  • Extract concentrations were determined by colorimetry against a standard cyaniding curve yielding 71 ug /ml flavonoid in methanol and 63 ug /ml in acetone. (onljbioinform.com)
Water4
  • 0.2 to 33.5 µg/L). Concentrations of NTA in raw and treated water samples exceeded 10 µg/L in only 14% of the locations. (canada.ca)
  • Based on the mean concentration of NTA reported in the Canadian national survey (2.82 µg/L), Footnote 20 and assuming average daily water consumption of 1.5 L, average daily intake of NTA from drinking water is 4.23 µg. (canada.ca)
  • Additionally, regular testing of treated water samples helps monitor the overall quality parameters such as pH levels, turbidity, residual chlorine content, heavy metal concentrations, and microbial presence. (waterky.org)
  • The changes in blood water concentration indicated a mean size of V of 5.9 1 (+/- 0.8, SEM) for Ringer's solution, 2.6 (+/- 0.3) 1 for dextran, and 1.2 (+/- 0.1) 1 for hypertonic saline. (silverchair.com)
Acceptable1
  • As the name suggests, evidential testing involves the collection of evidence of a subject's alcohol concentration in an acceptable form to be used in a Court or Industrial Tribunal. (druglibrary.net)
Measure1
  • Colorimetry is a way to measure the concentration of substances that absorbs light. (lovibond.com)
Blood1
  • The research team found out that targeting these areas to predict the hemoglobin concentration in blood allowed for the identification of anemia. (healthnews.com)
Effects1
  • These adverse health effects depend not only on the level of PM concentration in the air but also on its particular internal composition [ 11 ]. (springer.com)
Involves1
  • It involves determining the presence and concentration of harmful microorganisms like bacteria and viruses. (waterky.org)
Samples1
  • Additionally, saliva samples were collected at baseline and at designated timepoints, and peroxide levels in saliva were measured by colorimetry. (umich.edu)
Method1
  • 1.2 This test method may be extended to higher concentration by dilution. (astm.org)
Activity3
  • this allows the concentration, rather than the activity, to be measured directly and often read directly off a meter. (cdc.gov)
  • The enzyme activity was also studied using the 3D printed spectrophotometer while using kojic acid, a common commercially employed tyrosinase inhibitor while varying both its molar concentration and volume concentration to control the reaction rate at discrete activity levels. (rutgers.edu)
  • The model also helped distinguish differences in malate concentration among the three cultivars and between the pre and post-harvest stages by highlighting the probable importance of proton pump activity and particularly of the free energy of ATP hydrolysis and vacuolar pH. (biomedcentral.com)
Higher2
  • higher concentrations of N-terminal pro-brain natriuretic peptide (NT-proBNP) and lower ET. (bvsalud.org)
  • Higher temperatures and/or salinity leads to a decrease in DO concentration. (njcola.org)
Instrument1
  • These findings contribute to the growing body of data indicating that smartphone colorimetry is probably a practical instrument for expanding access to anemia screening. (healthnews.com)
People1
  • Since the fructosamine concentrations of people with well-controlled diabetes may overlap with those of people who are not diabetic, the fructosamine test is not useful as a screening test for diabetes. (medscape.com)
Properties1
  • Malate is one of the most important organic acids in many fruits and its concentration plays a critical role in organoleptic properties. (biomedcentral.com)
Level2
  • Therefore, one can hypothesize that malate accumulation in fruit cells is mainly controlled at the level of vacuolar storage, and that metabolism responds appropriately to regulate the cytosolic concentration of malate since it plays a fundamental role in the regulation of cytosolic pH [ 14 ]. (biomedcentral.com)
  • Normal values vary in relation to the serum albumin concentration and are 200-285 µmol/L, when the serum albumin concentration level is 5 g/dL. (medscape.com)
Increase1
  • The problems are the coefficient of oil friction, and will increase along with the increase in varnish concentration and varnish deposits. (machinerylubrication.com)
Research1
  • Therefore, the hydrazine sensing at a low concentration has been the central area of research in the last few years [15]. (jchemrev.com)