快速溶剂萃取-气相色谱-质谱法测定土壤中12种半挥发性有机物  

Determination of 12 SVOCs in soil by accelerated solvent extraction-gas chromatography-mass spectrometry

作　　者：王岚 高翔宇 杨海文 张华 高文旭 马怡飞 白亮 Wang Lan;Gao Xiangyu;Yang Haiwen;Zhang Hua;Gao WenXun;Ma Yifei;Bai Liang(Xi’an Northwest Geological Institute of Nonferrous Metals Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]西安西北有色地址研究院,西安710054

出　　处：《化学分析计量》2021年第7期29-33,共5页Chemical Analysis And Meterage

摘　　要：建立快速溶剂萃取-气相色谱-质谱法测定土壤中12种半挥发性有机物的方法。选取丙酮-二氯甲烷(体积比为3∶7)为萃取溶剂,萃取温度为100℃,萃取时间为7 min,循环萃取2次,浓缩定容后进行测定。12种半挥发性有机物在质量浓度为0.05~2.00μg/L的范围内与各自的色谱峰面积线性关系良好,平均响应因子的相对标准偏差均小于30%,检出限为0.30~0.65μg/kg。加标水平为0.20μg/kg时的加标回收率为62.01%~106.87%,测定结果的相对标准偏差为4.33%~8.29%(n=6)。该方法适用于建设用地中土壤半挥发性有机物的检测。A method for determination of 12 semi-volatile organic compounds(SVOCs)in soil by accelerated solvent extraction-gas chromatography-mass spectrometry was established.The extraction solvent was acetone-dichloromethane(volume ratio was 3∶7),the extraction temperature was 100℃,the extraction time was 7 min,and the extraction cycles were 2 times.After extraction,the samples were diluted and determined by gas chromatography-mass spectrometry.The mass concentration of 12 SVOCs had a good linear relationship with the chromatographic peak area in their respective ranges of 0.05-2.00μg/L with the relative standard deviation of average response factor were less than 30%,and the detection limit of the method was 0.30-0.65 mg/L.The recoveries were 62.01%-106.87%at the spiked level of 0.20μg/kg,and the relative standard deviations of the determination results were 4.33%-8.29%(n=6).This method is suitable for the detection of SVOCs in soil of development land.

关 键 词：气相色谱-串联质谱法 快速溶剂萃取 半挥发性有机物 土壤 

分 类 号：O657.7[理学—分析化学]