卫生研究

目的建立灵敏、快速的水中五氯酚的测定方法。方法在色谱柱、色谱条件和定量方法等方面对现行的国家标准检测方法进行改进和优化,并对实际水样进行分析。结果建立以毛细管柱替代填充柱,以三溴苯酚(TBP)作为内标物的水中五氯酚的气相色谱分析方法。方法线性范围为0.1~10μg/L,r=0.9999;方法检出限为4.5ng/L;样品加标回收率为90.1%~98.4%,相对标准偏差(RSD)小于4.1%。结论本法灵敏度高、准确度好,适用于环境水样中五氯酚的痕量分析。

Objective To establish a method for sensitive and rapid determination of pentachlorophenol (PCP) in different water. Methods Based on the actual national standard detection method of PCP, gas chromatographic conditions and quantitative method were modified and optimized. The modified method was used for the determination of pentachlorophenol in samples from natural water, output water and tap water. Results A modified method for the detection of PCP in drinking water samples was developed with the conditions of gas chromatography as follows: the capillary column was used for separation and tribromophenol (TBP) as internal standard for quantification. the linear range were 0.1-10μg/L, and the correlation coefficient was 0.9999. The limit of detection was 4.5ng/L. Recoveries were between 90.1% and 98.4%, and RSD was less than 4.1%. Conclusion The proposed method is a sensitive and accurate method for trace analysis of PCP in different water.