Optimized pressure-pulse splitless injection and electron-capture, negative ionization detection for the congener specific determination of compounds of technical toxaphene

被引:14
作者
Bartha, R [1 ]
Vetter, W [1 ]
Luckas, B [1 ]
机构
[1] UNIV JENA,INST ERNAHRUNG & UMWELT,D-07743 JENA,GERMANY
来源
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1997年 / 358卷 / 7-8期
关键词
D O I
10.1007/s002160050514
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The goal of the study is the optimization of the congener specific determination of compounds of technical toxaphene (CTTs). For this reason GC/ECNI-MS and CTT standard mixtures are applied, The splitless injection is improved by pressure-pulse injection which yields significantly higher abundance of the CTTs than by the conventional constant flow injection technique. The abundance of low volatile CTTs like B9-1025 (Parlar #62) is increased by factor 3 or more. The pressure-pulse injec tion can easily be integrated ill standard (constant flow splitless injection) methods without influencing the retention times and reproducibility. The GC oven program and the flow are optimized for the separation of CTTs on a non-polar CP-Sil 2 column. Problems caused by oxygen in the ion source are discussed.
引用
收藏
页码:812 / 817
页数:6
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