第 52 卷第 6 期 Vol. 52 No. 6 2022 年 12 月 Dec 2022

所属栏目：分析与测试 土壤和地下水中氯化苄的顶空-气相色谱法研究

李 娜1，2，刘 瑞1，2，吴志鹏1，2，王 波1，2，田玲玲1，2，蔡嘉莉1，2 （1. 中科检测技术服务（广州）股份有限公司，广东 广州 510650；2. 中国科学院 广州化学研究所，广东 广州 510650）

摘　要：开发了利用顶空-气相色谱法检测土壤和地下水中氯化苄的新技术。顶空进样后，经DB-WAX型毛细管柱分离，采用氢火焰离子化检测器对氯化苄进行测定，外标法定量。氯化苄在质量浓度0.2~10 mg/L范围内线性关系良好，相关系数为0.998。土壤和地下水中氯化苄的检出限分别为0.3 mg/kg和0.04 mg/L，加标回收率分别为85.6%~90.0%和82.5%~91.5%，相对标准偏差分别为3.2%~5.9%和2.2%~4.8%（n=6）。新技术的检测前处理简便可靠、准确度高、精密度好。

关键词：顶空-气相色谱法；土壤；地下水；氯化苄

中图分类号：X8　　文献标识码：A　　文章编号：1009-9212（2022）06-0079-06

Determination of Benzyl Chloride in Soil or Ground Water by Headspace Gas Chromatography

LI Na1,2, LIU Rui1,2, WU Zhi-peng1,2,WANG Bo1,2, TIAN Ling-ling1,2, CAI Jia-li1,2 (1. CAS Testing Technical Services (Guangzhou) Co., Ltd., Guangzhou 510650, China; 2. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China)

Abstract：A novel technique for the determination of benzyl chloride in soil or ground water by headspace gas chromatography was developed. After headspace injection, the benzyl chloride was separated by a DB-WAX type capillary column, detected by FID, and quantified by external standard method. Signal of benzyl chloride had a good linear relationship in a range of mass concentration 0.2~10 mg/L with a linear correlation coefficient of 0.998. The detection limits of benzyl chloride were 0.3 mg/kg and 0.04 mg/L, respectively; the recovery rates of standard addition were 85.6%~90.0% and 82.5%~91.5%, respectively; and the relative standard deviations were 3.2%~5.9% and 2.2%~4.8% (n=6) for soil and ground water, respectively. The sample-preparation process was simple. The result was accurate and reliable.

Key words：headspace gas chromatography; soil; ground water; benzyl chloride

基金项目：广东省科技专项资金项目（200819166270918）。

作者简介：李 娜（1986—），女，河南南阳人，高级工程师，硕士，研究方向：环境检测分析工作（E-mail：lina@gic.ac.cn）。

收稿日期：2022-10-08