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关于有机氯杀虫剂残留量的气相色谱分析,已有许多报导。国外除六六六、DDT外,还大量使用艾氏剂、七氯、荻氏剂等,故其所用色谱柱需考虑十几个甚至更多的有机氯化合物的分离。我国农药中六六六用量最大,DDT为六六六的十分之一,其他品种的应用则极少。但在残留量分析法中,目前仍多采用与国外类似的色谱柱,不但分析时间长,而且有的组分不能完全分离。为此,需要研究一种快速和分离效率高的色谱柱。影响气相色谱柱效和分离速度的因素很多。在目前普遍使用2—4毫米内径填充柱的情况下,我们认为载气、载体和固定液的种类是影响柱效和分离速度的主要因素。因此,本文针对国内使用农药情况,
Gas chromatographic analysis of organochlorine pesticide residues has been reported. Abroad, in addition to six six six, DDT, but also the extensive use of aldrin, heptachlor, Diggt, etc., so the column used to be considered more than a dozen or more organic chlorine compounds separation. China’s pesticide use the largest amount of BHC, DDT is one-sixth of BHC, other varieties are rarely used. However, in the residue analysis, the current use of similar columns with foreign countries, not only the analysis of a long time, and some components can not be completely separated. To do this, you need to study a fast and highly efficient separation column. There are many factors that affect GC efficiency and separation speed. Given the current widespread use of 2-4 mm id packed columns, we believe that the type of carrier gas, carrier, and fixative are the major contributors to column efficiency and separation speed. Therefore, this article for the domestic use of pesticides,