《城市供水水质标准》中挥发性有机物的检测方法

Detection Method for VOCs Specified in Water Quality Standard for Urban Water Supply

采用顶空气相色谱法同时检测《城市供水水质标准》（CJ／T206--2005）中15种挥发性有机物（VOCs），在优化平衡条件和色谱条件下，该方法可有效分离15种挥发性有机物，其RSD〈13％，样品的加标回收率为89％～108％，除1，2-二氯乙烷外，其他14种有机物的测定限均能满足《城市供水水质标准》（CJ／T206-2005）和《地表水环境质量标准》（GB3838-2002）的要求。

The headspace gas chromatography （HSGC） was used to simultaneously detect the 15 VOCs specified in Water Quality Standards for Urban Water Supply （CJ/T 206 -2005 ）. These VOCs are separated effectively when equilibrium conditions and chromatographic parameters are optimized. Their RSD is less than 13% and the recovery rates with standard addition of all samples are 89% to 108%. Except for 1,2-C2H4Cl2, the detection limits of the other 14 organic compounds can meet both Water Quality Standard for Urban Water Supply （CJ/T 206 -2005） and Water Environment Quality Standards for Surface Water （ GB 3838 - 2002 ）.