挥发性有机物(VOCs)是一类沸点小于200℃,相对分子质量在16~250的有机化合物的统称,是水中重要的一类污染物,如芳香烃、脂肪烃、卤代烃等。这类化合物性质稳定,不易分解,具有强致癌性、致突变以及致生殖系统毒害性,易造成饮用水污染[1]。2007年7月实施的《生活饮用水卫生标准》(GB5749—2006)将原来毒理指标中的有机化合物由5项增至53项,其中包括三氯甲烷、四氯化碳、苯、三氯乙 Volatile organic compounds (VOCs) are a group of organic compounds with boiling points less than 200 ℃ and relative molecular mass of 16 ~ 250. They are important pollutants in water such as aromatic hydrocarbons, aliphatic hydrocarbons and halogenated hydrocarbons. Such compounds are stable in nature, not easily decomposed, with strong carcinogenic, mutagenic and reproductive toxicity, easily lead to drinking water pollution [1]. The Standards for Drinking-water Quality (GB5749-2006) implemented in July 2007 increased the original organic compounds in the toxicological indicator from 5 to 53, including chloroform, carbon tetrachloride, benzene, trichloro B