液液萃取-气相色谱质谱法检测污染场地地下水中合成麝香  

Determination of synthetic musk in ground water by liquid-liquid extractiongas chromatography mass spectrometry

作　　者：冯学良 汪素芳 王晓伟[1] 杨霓云[1] 董淮晋 孟甜 FENG Xueliang;WANG Sufang;WANG Xiaowei;YANG Niyun;DONG Huaijin;MENG Tian(Chinese Research Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]中国环境科学研究院,北京100012

出　　处：《分析试验室》2022年第9期1016-1020,共5页Chinese Journal of Analysis Laboratory

基　　金：国家重点研发计划项目(2020YFC1807903)资助。

摘　　要：建立了气相色谱质谱法(GC-MS)测定地下水中3种合成麝香类化合物(SMs)含量的方法。二氯甲烷萃取后浓缩定容,采用GC-MS法检测,外标法定量。结果表明,中性水环境条件下,对3种SMs进行检测,仪器标准曲线线性范围20.0~2000μg/L,相对响应因子的相对标准偏差(RSD_(RRF))小于8.7%,方法检出限为0.007~0.012μg/L,3个浓度的自来水样品加标回收率在98.1%~117.0%之间,RSD小于13%。采用该方法在实际地下水样品中检出0.013μg/L二甲苯麝香,实际水样加标回收率大于80%。本方法适用于地下水中痕量SMs的检测。A gas chromatography-mass spectrometry(GC-MS)method was established to determine three different synthetic musks(SMs)from ground water.Dichloromethane as the extracting solvent,the concentrated extracts were tested by GC-MS using the external standard quantitative method.Each sample was extracted three times with 40 mL dichloromethane respectively.The linearity test was carried out in the range of 20.0 to 2000μg/L,the relative standard deviation (RSD_(RRF)) of average relative response factor was less than 8.7%,and the limits of detection(LODs)were in the range of 0.007 to 0.012μg/L.The recoveries of three spiked ground water samples were all between 98.1%and 117.0%,and the relative standard deviations were less than 13%.Musk xylene in the ground water sample was 0.013μg/L,and the spiked real sample had the recoveries higher than 80%.This method was suitable for the detection of trace SMs in ground water.

关 键 词：合成麝香类化合物 地下水 液液萃取 气相色谱质谱法 

分 类 号：O657.3[理学—分析化学]