DETERMINATION OF REDUCED SULFUR-COMPOUNDS IN THE ATMOSPHERE USING A COTTON SCRUBBER FOR OXIDANT REMOVAL AND GAS-CHROMATOGRAPHY WITH FLAME PHOTOMETRIC DETECTION

被引：37

作者：

PERSSON, C ^{[1
]}

LECK, C ^{[1
]}

机构：

[1] UNIV STOCKHOLM, DEPT METEOROL, S-10691 STOCKHOLM, SWEDEN

来源：

ANALYTICAL CHEMISTRY | 1994年 / 66卷 / 07期

关键词：

D O I：

10.1021/ac00079a009

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for simultaneous determination of atmospheric dimethyl sulfide (DMS), carbon disulfide (CS2), and dimethyl disulfide (DMDS) is described. Prior to cryogenic trapping, atmospheric oxidants were successfully removed by a new high capacity scrubber system based on 100% cotton wadding in combination with a Nafion drier. Using on-line calibration, the overall accuracy was within +/- 2% for DMS and +/- 15% for CS2 and DMDS. The precision of the method, for relative humidities of less-than-or-equal-to 30% (T = 22-degrees-C), was better than +/- 3% for DMS and about +/- 5% for CS2 and DMDS. Ambient air samples have successfully been taken and analyzed during the International Arctic Ocean Expedition (IAOE) in the summer and fall of 1991. The main compound present was DMS in concentrations ranging from 1 (detection limit) to 370 ppt(v).

引用

页码：983 / 987

页数：5

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