COMPARATIVE-ANALYSIS OF DIOXINS AND FURANS IN AMBIENT AIR BY HIGH-RESOLUTION AND ELECTRON-CAPTURE MASS-SPECTROMETRY

被引：8

作者：

KOESTER, CJ

HARLESS, RL

HITES, RA

机构：

[1] INDIANA UNIV,DEPT CHEM,BLOOMINGTON,IN 47405

[2] US EPA,ATMOSPHER RES & EXPOSURE ASSESSMENT LAB,RES TRIANGLE PK,NC 27711

来源：

CHEMOSPHERE | 1992年 / 24卷 / 04期

关键词：

D O I：

10.1016/0045-6535(92)90416-O

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Known mixtures and unknown atmospheric sample extracts containing polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/F) were analyzed by both electron impact, high resolution, mass spectrometry (HRMS) and by electron capture, negative ion, low resolution mass spectrometry (ECNI). PCDD/F concentrations measured by the two methods were comparable, typically agreeing within +/- 33%. The major difference between the two techniques is that HRMS easily detects 2,3,7,8-tetrachlorodibenzo-p-dioxin, but ECNI does not. With this exception, the results suggest that ECNI can be a sensitive, low cost alternative to HRMS for the determination of PCDD/F concentrations.

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页码：421 / 426

页数：6

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