A problem in the determination of trihalomethane by headspace-gas chromatography/mass spectrometry

被引：14

作者：

Takahashi, Y

Onodera, S

Morita, M

Terao, Y

机构：

[1] Tokyo Metropolitan Res Lab Publ Hlth, Shinjuku Ku, Tokyo 1690073, Japan

[2] Univ Shizuoka, Grad Sch Nutrit & Environm Sci, Shizuoka 4228526, Japan

[3] Sci Univ Tokyo, Fac Pharmaceut Sci, Shinjuku Ku, Tokyo 1620826, Japan

[4] Natl Inst Environm Studies, Tsukuba, Ibaraki 3050053, Japan

来源：

JOURNAL OF HEALTH SCIENCE | 2003年 / 49卷 / 01期

关键词：

trihalomethane; disinfection by-product; headspace-GC/MS method; trichloroacetone; trihaloacetonitrile; trihaloacetic acid;

D O I：

10.1248/jhs.49.1

中图分类号：

R99 [毒物学（毒理学）];

学科分类号：

100405 ;

摘要：

The formation of trihalomethane (THM) from 37 organohalogen compounds, disinfection by-products, was measured by the headspace-gas chromatography/mass spectrometry (GC/MS) method. Among these 37 organchalogen compounds, 10, including trichloroacetones, trihaloacetonitriles and trihaloacetic acids, produced THMs upon heating of aqueous solutions at 60degreesC for 30 min in a heads,pace sampler. The amounts and composition of THMs produced by heating depended on the position and number of the bound chlorine or bromine. In addition, the production of THMs from some of the organohalogen compounds upon heating was strongly affected by pH, temperature and heating duration. These results suggest that the headspace-GC/MS method overestimates the net concentration of THM due to positive errors.

引用

页码：1 / 7

页数：7

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