分析化学2024，Vol.52Issue(12)：1817-1822,6.DOI:10.19756/j.issn.0253-3820.241302
便携式气相色谱-质谱联用现场检测土壤中挥发性有机污染物
Onsite Detection of Volatile Organic Pollutants in Soil Samples by Portable Gas Chromatography-Mass Spectrometry
摘要
Abstract
Rapid detection of organic volatile compounds(VOCs)in soil is crucial for evaluating soil safety in different aspects including ecological environment,human health,and agricultural application.In this study,a portable analytical approach was developed for onsite detection of VOCs in soil by headspace solid phase microextraction coupled with portable gas chromatography-mass spectrometry(SPME-PGC-MS).Several typical VOCs including heptane,benzene,toluene,ethylbenzene and bromobenzene were used to investigate and optimize the choice of SPME fiber,and it was found that the polydimethylsiloxane/divinyl benzene(PDMS/DVB)SPME fiber had the best enrichment effect.Furthermore,well-acceptable analytical performances including stability,sensitivity and quantitative detection of SPME-PGC-MS were obtained for detecting five typical VOCs.The relative standard deviations of the method were 4.79%-7.53%for parallel measurements(n=6),the limits of detection(LODs)and limits of quantification(LOQs)were found to be 2.81-3.89 μg/L and 9.37-12.97 μg/L,respectively,and the linear ranges of five VOCs were 5.0-100 μg/L with excellent correlation coefficient(R2>0.99).Furthermore,the presented SPME-PGC-MS method was successfully used for on-site detection of various VOCs from different real soil samples,showing that a variety of VOCs such as benzene,n-heptane,toluene,chlorobenzene and ethylbenzene were mainly generated from industrial pollution.The developed SPME-PGC-MS was a promising portable approach for onsite screening of VOCs in the soil in different applications.关键词
土壤污染/有毒挥发性有机物/便携式气相色谱-质谱/固相微萃取/现场分析Key words
Soil contamination/Toxic volatile organic compounds/Portable gas chromatography-mass spectrometry/Solid phase microextraction/Onsite analysis引用本文复制引用
陈伟妮,刘旋,胡斌..便携式气相色谱-质谱联用现场检测土壤中挥发性有机污染物[J].分析化学,2024,52(12):1817-1822,6.基金项目
中央高校基本科研业务费项目(No.21624203)、广州市科技计划项目(No.2024A03J0454)和国家自然科学基金项目(No.22127810)资助. Supported by the Fundamental Research Funds for the Central Universities(No.21624203),the Guangzhou Science and Technology Program(No.2024A03J0454)and the National Natural Science Foundation of China(No.22127810). （No.21624203）
