色谱2011，Vol.29Issue(9)：912-917,6.DOI:10.3724/SP.J.1123.2011.00912
新型水蒸气顶空富集装置在饮用水中痕量挥发性有机物非目标筛查中的应用
A novel vapor dynamic headspace enrichment equipment for nontarget screening of volatile organic compounds in drinking water
摘要
Abstract
A novel vapor dynamic headspace enrichment device was set up for nontarget screening of volatile organic compounds (VOCs) in drinking water. The main operating parameters of this device, such as length of distillation tube, volume of collected condensate, and choice of absorbent, were optimized. In this device, vapor was utilized as a purge gas and water was utilized as a absorbent. With the help of the device, one liter of water sample could be concentrated to 5 mL and the sensitivity of traditional purge and trap-gas chromatography-mass spectrometry (P&T-GC-MS) could be improved 1 -2 orders of magnitude. Source and disinfected water samples from a water treatment plant were analyzed with this method. Compared with the traditional P&T-GC-MS analysis without pre-enrichment, the numbers of identified VOCs were improved from 0 to 16 for source water and 5 to 35 for disinfected water samples. It is also shown that there are many halide compounds in VOCs in disinfected water which do not exist in source water.关键词
水蒸气顶空富集/饮用水/挥发性有机物/非目标筛查/吹扫捕集Key words
vapor dynamic headspace enrichment/ drinking water/ volatile organic compounds / nontarget screening/ purge & trap分类
化学化工引用本文复制引用
马慧莲,张海军,田玉增,王龙星,陈吉平..新型水蒸气顶空富集装置在饮用水中痕量挥发性有机物非目标筛查中的应用[J].色谱,2011,29(9):912-917,6.基金项目
国家水体污染控制与治理科技重大专项(2009ZX07527-005). （2009ZX07527-005）
