A Problem in the Determination of Trihalomethane by Headspace-Gas Chromatography/Mass Spectrometry
A Problem in the Determination of Trihalomethane by Headspace-Gas Chromatography/Mass Spectrometry
复制标题
顶空气相色谱/质谱法测定三卤甲烷的一个问题
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Y. Terao
中科院分区：
文献类型：
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作者：
Yasuo Takahashi;S. Onodera;M. Morita;Y. Terao
采用顶空-气相色谱/质谱（GC/MS）法测定了37种消毒副产物三卤甲烷（THM）的生成量。在这37种有机卤素化合物中，包括三氯丙酮、三卤乙腈和三卤乙酸的10种在顶空进样器中在60°C下加热水溶液30 min时产生THMs。通过加热产生的THMs的量和组成取决于结合的氯或溴的位置和数量。此外，从一些有机卤素化合物加热时的THMs的生产强烈受pH值，温度和加热时间的影响。这些结果表明，顶空-GC/MS方法高估了THM的净浓度，由于正误差。
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 organohalogen compounds, 10, including trichloroacetones, trihaloacetonitriles and trihaloacetic acids, produced THMs upon heating of aqueous solutions at 60°C for 30 min in a headspace 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.
污水氯化、溴消毒的副产物
DOI：
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发表时间：
2003
期刊：
第12回環境化学討論会講演要旨集
影响因子：
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作者：
土佐光司
通讯作者：
土佐光司