摘要
采用Na Cl溶液提取,顶空气相色谱法测定底泥中的三氯乙烯和四氯乙烯,方法在0.098 ng/L^1.03 ng/L范围内线性良好,三氯乙烯和四氯乙烯的方法检出限分别为0.013 ng/g和0.016 ng/g。对空白样品做3个质量比水平的加标回收试验,7次测定结果的RSD为2.0%~3.8%,平均加标回收率为94.0%~109%。将该方法用于桂林市漓江底泥样品的测定,结果三氯乙烯和四氯乙烯均为未检出,实际样品加标回收率为92.0%~107%。
Trichloroethylene and tetrachloroethylene in sediment were extracted by 10% Na Cl solution,and determined by headspace gas chromatography. Results showed that good linearity was obtained in the concentration range of 0. 098 ng/L ～ 1. 03 ng/L. The MDL of trichloroethylene and tetrachloroethylene were 0. 013 ng/kg and 0. 016 ng/kg,respectively. 7 times of spiked blank tests were carried out in 3 concentration level,the RSDs of 7 tests ranged from 2. 0% ～ 3. 8%,the average recoveries were in the range of 94. 0% ～ 109%. The test results of sediment samples from Li River in Guilin showed that trichloroethylene and tetrachloroethylene were not detected,the recoveries of spiked sample were in the range of 92% ～ 107%.
出处
《环境监测管理与技术》
CSCD
2017年第5期44-46,共3页
The Administration and Technique of Environmental Monitoring
基金
桂林市环境监测中心站科研孵化基金资助项目(FH201502)
关键词
三氯乙烯
四氯乙烯
顶空气相色谱法
底泥
Trichloroethylene
Tetrachloroethylene
Headspace gas chromatography
Sediment
