• thin layer chromato
  • Acid phosphatase test for semen Cobalt thiocyanate test for cocaine Duquenois-Levine reagent for marijuana Kastle-Meyer test for blood Malachite green test for blood Marquis reagent for narcotics Benzidine test for blood which changes from clear to blue in color with the presence of blood Tests for alkaloids and the Marquis test, performed a thin layer chromatography plate as per the analytical manual, US Department of Justice, are presumptive tests. (wikipedia.org)
  • The early methods developed for the determination of gyromitrin concentration in mushroom tissue were based on thin-layer chromatography and spectrofluorometry, or the electrochemical oxidation of hydrazine. (wikipedia.org)
  • derivatisation
  • A miniaturized and automated derivatisation method using sequential oximation and silylation was applied to a polar extract of 4 types (2 types×2 ages) of Arabidopsis thaliana, a popular model organism often used in plant sciences and genetics. (semanticscholar.org)
  • gaseous
  • During full-scale fire suppression tests conducted at the National Fire Laboratory of the National Research Council Canada, Fourier Transform Infrared (FTIR) Spectroscopy, Gas Chromatography-Mass Spectrometry (GC/MS) and Specific IonElectrode (SIE) method were employed to monitor the concentrations of the gaseous suppression agents in the test compartment. (gc.ca)
  • This report describes the application of these three analytical methods for a series of tests conducted with HCFC Blend A.. The results for the measurements of gaseous agent and halogen acid gas concentrations using these three methods are provided. (gc.ca)
  • molecules
  • The use of a focused monoenergetic beam of electrons for ionization of gas phase atoms and molecules was developed by Bleakney in 1929. (wikipedia.org)
  • During this time, he developed the first GC/MS instruments and developed techniques for determining the structure of organic molecules by mass spectrometry, most notably in the discovery of what is now known as the McLafferty rearrangement. (wikipedia.org)
  • Measurement
  • It is shown that FTIR Spectroscopy provides an instantaneous and continuous method for the measurement of multiple chemical species in the fire tests with reasonable accuracy. (gc.ca)
  • chemical
  • Liquids with the analyte dissolved in them, or solutions, can be ionized through methods such as matrix-assisted laser desorption , electrospray ionization, and atmospheric-pressure chemical ionization. (wikipedia.org)
  • Upon condensation, the gas converts to various other forms of formaldehyde (with different chemical formulas) that are of more practical value. (wikipedia.org)
  • He took a position at Dow Chemical in Midland, Michigan in 1950 and was in charge of mass spectrometry and gas chromatography from 1950 to 1956. (wikipedia.org)
  • Development
  • However, increased demand for pyridine resulted in the development of more economical methods of synthesis from acetaldehyde and ammonia, and more than 20,000 tonnes per year are manufactured worldwide. (wikipedia.org)
  • particularly
  • Supplemental HMB has been used in a number of clinical trials as a treatment for preserving lean body mass in muscle wasting conditions, particularly sarcopenia, and has been studied in clinical trials as an adjunct therapy in conjunction with resistance exercise. (wikipedia.org)
  • However
  • However, this method is still a popular ionization technique. (wikipedia.org)
  • however, the trial did not adequately test the ability of Juven to prevent or reverse the loss of lean body mass in individuals with cancer cachexia since the majority of participants did not complete the study. (wikipedia.org)
  • specific
  • The research team suggests using gas chromatography-mass spectrometry as the most sensitive and specific testing method for identifying MDMA and its contaminants but this is out of reach for users in most countries and reagent tests remain popular, often distributed by harm-reduction organisations due to their low cost and high utility when multiple test reagents are used. (wikipedia.org)
  • phase
  • This method only works if the sample and other components in the gas phase are excited by different wavelengths of light. (wikipedia.org)
  • The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. (wikipedia.org)
  • H + CO → HCO HCO + H → CH2O (rate constant=9.2×10−3 s−1)[clarification needed] Formaldehyde appears to be a useful probe for astrochemists due to its low reactivity in the gas phase and to the fact that the 110←111 and 211←212 K-doublet transitions are rather clear. (wikipedia.org)
  • shown
  • In healthy adults, supplementation with HMB has been shown to increase exercise-induced gains in muscle size, muscle strength, and lean body mass, reduce skeletal muscle damage from exercise, improve aerobic exercise performance, and expedite recovery from exercise. (wikipedia.org)
  • Juven, a nutrition product which contains 3 grams of HMB-Ca, 14 grams of L-arginine, and 14 grams of L-glutamine per two servings, has been shown to improve lean body mass during clinical trials in individuals with AIDS and cancer, but not rheumatoid cachexia. (wikipedia.org)
  • accurate
  • Considerable care is required to obtain accurate measurements in the presence of halogen acid gases. (gc.ca)