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SummaryThe use of combined gas chromatography-mass spectrometry in forensic chemistry is demonstrated in 13 cases where various substances had to be isolated and identified, the substance was present in small amounts in some samples while in others the sample available was very small. 出版机构：Springer Verlag 刊物名称：International Journal of Legal Medicine 出版时间：1971 ISSN：0937-9827 数据源：报刊文摘
ensitive primary amine assay, capable of detecting 10-11 g. and utilizing the determination of the amine N-2, 4-dinitrophenyl derivative by electron-capture gas chromatography is described. The method is exemplified by the determination of cyclohexylamine in sodium cyclamate. 出版机构：Taylor & Francis 刊物名称：Analytical Letters 出版时间：1971 ISSN：0003-2719 数据源：报刊文摘
n account is given of the preparation, separation and detection of volatile fluorides. These fluorides are formed by the reaction of chlorine trifluoride with the elements in a specially designed PTFE reaction vessel enclosed in an HF coil. 出版机构：Taylor & Francis 刊物名称：Analytical Letters 出版时间：1971 ISSN：0003-2719 数据源：报刊文摘
At or above 150?C, the rates of catalyzed and non-catalyzed silylation reactions with these reagents are s imilar. 出版机构：Taylor & Francis 刊物名称：Analytical Letters 出版时间：1971 ISSN：0003-2719 数据源：报刊文摘
The use of gas chromatography with flame photometric detection provides a convenient means of detecting sulfur-containing compounds in the gas phase of cigarette smoke. Application of the method casts doubt on currently held views about the composition of the sulfur-containing portion of smokes. 出版机构：Taylor & Francis 刊物名称：Analytical Letters 出版时间：1971 ISSN：0003-2719 数据源：报刊文摘
Oxime derivatives (methoxime, benzyloxime, trimethylsilyloxime) of 17-ketosteroids will, under some gas chromatographic conditions, undergo Beckmann fission in the injector zone. The result of this effect is partial or total conversion of the steroid derivative to a nitrile. 出版机构：Taylor & Francis 刊物名称：Analytical Letters 出版时间：1971 ISSN：0003-2719 数据源：报刊文摘
Uronic acids in polysaccharides may be reduced by reaction of the propionated methyl ester with lithium borohydride in tetrahydrofuran. After hydrolysis and reduction of the monosaccharides the acetylated alditols may be separated by gas-liquid chromatography on a column of butanediol succinate. 出版机构：Taylor & Francis 刊物名称：Analytical Letters 出版时间：1971 ISSN：0003-2719 数据源：报刊文摘
The method used for the determination of phenol, o-, m- and p-cresol is based upon purification by means of distillation, chloroform extraction of distillates, and gas chromatographic analysis of the trimethylsilyl ethers prepared. 出版机构：Informa Healthcare 刊物名称：Scandinavian Journal of Clinical and Laboratory Investigation 出版时间：1971 ISSN：0036-5513 数据源：报刊文摘
method for gas chromatographic trace determination is described in which the sample solution is injected into a packed precolumn which is connected to an EC-detector. 出版机构：Taylor & Francis 刊物名称：Analytical Letters 出版时间：1971 ISSN：0003-2719 数据源：报刊文摘
gas chromatographic method is described for the assay of primary amino groups. The technique is a modification of the Van Slyke method, in which the N2 liberated by the reaction of primary amino groups with nitrous acid is measured by GC. 出版机构：Taylor & Francis 刊物名称：Analytical Letters 出版时间：1971 ISSN：0003-2719 数据源：报刊文摘
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