eardrum
发表于 2025-3-25 03:52:41
Automatic Integrators and Gas Chromatography,ed, eliminating steps, or automating routine functions. Because of the number and complexity of samples analyzed in many gas-chromatography laboratories, simplification of the analysis is worthwhile. Automatic integration of peak areas can be one way to achieve this simplification.
insidious
发表于 2025-3-25 08:48:25
Measurement of Trace Amounts of Inert Gases in Blood by Gas Chromatography,hods for quantitating trace amounts of the gases in blood, until recently, have made it feasible to employ only those agents having commercially available radioisotopes (e.g., Kr. and Xe.). Of particular interest are gases that possess extremely low solubilities in blood, because these gases tend to
Torrid
发表于 2025-3-25 13:01:18
Gas Chromatography of Vitamin B6 and Other Vitamins,f separation, sensitivity, and convenience in quantitation. The recently introduced combination of gas chromatography with mass spectrometry [.] can be expected to provide a powerful tool for analytical studies in this field, such as those concerned with the metabolic fates of vitamins and their ana
骚动
发表于 2025-3-25 16:08:33
Dual Channel Gas Chromatography,two detectors for examining the column effluent. It was first used by Dr. James Lovelock, who has shown simultaneous chromatograms of chlorinated substances obtained with an electron capture detector and an argon detector I.]. In addition to showing two chromatograms, dual channel gas chromatography
周兴旺
发表于 2025-3-25 21:39:41
Analytical Methods for Pesticides,interfering substances that must be removed. Tolerances for all compounds used on edible crops are set by the Food and Drug Administration. For, compounds that possess low toxicity, tolerances are relatively high. Thus, residues of 7 ppm of DDT are permissible. However, crops containing a few hundre
受伤
发表于 2025-3-26 03:57:10
A Modified Hydrogen Flame-Ionization Detector, Highly Sensitive and Selective for Phosphates,ms one is capable of detecting halogens, sulfur, and phosphorus with high specificity but with somewhat low sensitivity, while with the electron capture detector one can detect compounds containing strong electronegative groups with high sensitivity but with low specificity. While in most cases the
不能仁慈
发表于 2025-3-26 04:50:02
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Aids209
发表于 2025-3-26 11:49:23
Analysis of Some Nonprotein Amino Acids by Gas Chromatography,t since Bayer’s first demonstration in 1957 [.] that various suitable volatile derivatives could be made and separated. Most of the attention has, naturally, been directed toward the analysis of the amino acids which commonly occur in proteins, since the ion-exchange methods presently available set
Uncultured
发表于 2025-3-26 15:00:45
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嘲笑
发表于 2025-3-26 17:22:06
Gas Chromatography of Amino Acids,Amino acid gas chromatography procedures were reviewed in 1962 by Burchfield and Storrs [.] and by Littlewood [.]. Since that time additional procedures have been developed, and several workers have used these procedures to analyze the amino acid composition of proteins, blood, and nerve tissue and to resolve optical isomers.