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本文建立了水中五氯丙烷的顶空-气相色谱检测新方法,方法操作简便,实验室安全性强,加标回收率为88.99%,最低检出限为2μg/L,相对标准偏差为4.29%。研究了五氯丙烷在粉末活性炭上的吸附特性,在纯水和原水条件下粉末活性炭分别吸附到30min和60min时,水中五氯丙烷的浓度分别为0.0297mg/L和0.0310mg/L,此时的去除率分别为81.8%和79.3%。纯水、原水条件下,最大投炭量(80mg/L)条件下可以应对的五氯丙烷的最高质量浓度分别为0.78和0.61mg/L。
In this paper, a new method for the determination of pentachloropropane in water by headspace-gas chromatography was established. The method was simple, safe and safe in laboratory. The recovery rate was 88.99%, the lowest detection limit was 2μg / L and the relative standard deviation was 4.29% . The adsorption properties of pentachloropropane on powdered activated carbon were studied. The concentrations of pentachloropropane in the water were 0.0297 mg / L and 0.0310 mg / L, respectively, when powdered activated carbon was adsorbed to pure water and raw water for 30 min and 60 min, respectively The removal rates were 81.8% and 79.3% respectively. Under the conditions of pure water and raw water, the highest concentration of pentachloropropane that can be dealt with under the maximum carbon storage (80mg / L) was 0.78 and 0.61mg / L, respectively.