Automated toxaphene quantitation by GC/MS

被引:41
作者
Glassmeyer, ST
Shanks, KE
Hites, RA [1 ]
机构
[1] Indiana Univ, Sch Publ & Environm Affairs, Bloomington, IN 47405 USA
[2] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA
关键词
D O I
10.1021/ac980906b
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Toxaphene is a complex mixture of at least 600 hexa- to decachlorinated bornanes and bornenes, which was used as an insecticide from the late 1950s to the early 1980s, Like PCBs and other environmentally persistent organochlorine pesticides, toxaphene is ubiquitous in the environment. Toxaphene's complex composition makes its accurate quantitation difficult. We report here an automatic, gas chromatographic mass spectrometry method (using electron capture negative ionization) that is precise and fast. This method is implemented by a small QBasic program that compares peak area ratios to the predicted chlorine isotopic ion ratios. This method decreases the time required for analysis while maintaining precise quantitation, The method is verified with standard and unknown samples contaminated with various amounts of other organochlorine pesticide interferents.
引用
收藏
页码:1448 / 1453
页数:6
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