饮用水中挥发性有机物(VOCs)的GC-MS分析

Analysis of Volatile Organic Compounds(VOCs) in Drinking Water by GC-MS

中文关键词:  挥发性有机物  顶空气相色谱  GC－MS  饮用水

英文关键词:volatile organic compounds(VOCs)  headspace gas chromatography  GC-MS  drinking water

中文摘要:

      用顶空-毛细管气相色谱-质谱联用仪测定了北京市主要区域的自来水、北京目前市场销售的瓶装饮用水(包括天然矿泉水、纯净水等)中23种挥发性有机物(VOCs)(包括有机氯代物、有机溴代物及苯系物等)的浓度,并与其它城市(如天津、上海、兰州等地)的自来水中VOCs的浓度进行了比较,结果表明北京市区内自来水及大多数市售瓶装饮用水中VOCs含量很低。但是,崂山矿泉水中含有某些不应有的卤代烃,有被污染的可能,上海和天津等地的VOCs浓度也明显偏高。

英文摘要:

      volatile organic compounds(VOCs), including organochlorides, organobromides and aromatic hydrocarbons, in tap water collected in the main districts of Beijing and drinking water, including natural mineral water and pure water, being on the market in Beijing were determined by headspace-capillary gas chromatograph-mass spectrometer. Comparisons were made with the concentrations of VOCs in tap water of other cities, such as Tianjin, Shanghai and Lanzhou. Contents of VOCs in tap water in Beijing and most of drinking water being on the market were low. The fact that some halogenides exist in Laoshan Mineral Water possibly means pollution happened. Higher concentrations of VOCs in tap water in Shanghai and Tianjin were also found.