ONLINE DETECTION OF VOLATILE ORGANIC-COMPOUNDS IN AIR AT PARTS-PER-TRILLION LEVELS BY MEMBRANE INTRODUCTION MASS-SPECTROMETRY

被引：68

作者：

CISPER, ME ^{[1
]}

GILL, CG ^{[1
]}

TOWNSEND, LE ^{[1
]}

HEMBERGER, PH ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,ADV CHEM DIAGNOST GRP,LOS ALAMOS,NM 87545

来源：

ANALYTICAL CHEMISTRY | 1995年 / 67卷 / 08期

关键词：

D O I：

10.1021/ac00104a017

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We describe the use of a two-stage membrane sampling system coupled with an ion trap spectrometer for the direct analysis of volatile organic compounds in air with quantitation limits to low parts-per-billion levels. and detection to parts-per-trillion levels. Toluene, carbon tetrachloride, trichloroethane, and benzene were used in these studies, We have obtained linear calibration curves from approximately 3 to 3000 ppb by volume for these compounds. The magnitude of instrument response is essentially independent of air now rate from 0.2 to >3 L/min; response times are 60-90 s, Additionally, the same membrane interface can be used for the sequential analysis of water and soil, providing a sensitive and versatile analytical tool.

引用

页码：1413 / 1417

页数：5

共 22 条

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