【作者】 刘珈佑； 徐莹； 余诗航； 王金生； 李剑；

【Author】 Liu Jiayou;Xu Ying;Yu Shihang;Wang Jinsheng;Li Jian;College of Water Sciences,Beijing Normal University;Groundwater Pollution Control and Remediation Ministry of Education Engineering Center;

【机构】 北京师范大学水科学研究院； 地下水污染控制与修复教育部工程中心；

【摘要】 基于CNKI数据库,筛选了2020年9月1日前发表的与污染场地苯系物监测技术相关文献,按照场地污染介质的不同将文献分为土壤和地下水苯系物监测技术2类。运用VOSviewer软件对获取的655篇文献开展了关键词分析,识别技术的发展历程和现状,并对未来的发展趋势进行预测。结果表明:1)国内有关污染场地苯系物监测技术的研究主要经历了3个发展阶段:从20世纪70年代开始到2004年为缓慢发展阶段;2005—2015年,得益于国内相关环境政策,技术发展迅速;2015年后,进入发展降温阶段;2)可视化分析表明,土壤和地下水中苯系物监测相关文献分别出现155个和62个共现关键词;关键词分析支持目前的研究热点除集中在苯系物监测、前处理外,还包括污染残留、土壤修复、生物毒性、风险评价等方面;3)按测试流程不同可将监测技术分为前处理技术和检测技术,快速溶剂萃取和顶空技术分别是目前土壤和地下水样品前处理应用最广泛的技术;气相和液相色谱技术则为最常用的苯系物检测技术;高效、简化前处理技术开发和各种检测技术的联用研究成为当前乃至未来污染场地苯系物监测技术发展的重要方向。更多还原

【Abstract】 Based on the CNKI database,all the articles related to benzene toluene ethylbenzene and xylene(BTEX)monitoring technology in contaminated sites published before September 1st,2020 were collected.The articles were divided into soil and groundwater BTEX monitoring technology according to different pollution media.Based on the VOSviewer software to carry out keyword analysis on 655 articles acquired,the development and current situation of these technologies were identified,and the future development trend was predicted.The results showed that:(1) The domestic research on BTEX monitoring technology in contaminated sites has gone through three stages of development since the 1970s.Firstly,the development was slow before 2005;then,from 2005 to 2015,because of the relevant domestic environmental policies,technology developed rapidly;after 2015,it entered the cooling stage of development.(2) Visual analysis showed that there were 155 and 62 co-occurring keywords in soil and groundwater BTEX monitoring articles,respectively,which also supported current research hotspots not only relate to BTEX monitoring and pretreatment,but also pollution residues,soil remediation,biological toxicity,risk assessment,etc.;(3)The monitoring technology is constituted by pretreatment and detection technology.Rapid solvent extraction technology and headspace technology are the common pretreatment technologies used for soil and groundwater samples,respectively.Gas chromatography and liquid chromatography are the most commonly used detection techniques for BTEX.The development of high-efficiency and simplified pretreatment technology and the detection hyphenated technologies have become an important direction for the development of BTEX monitoring technology in contaminated sites at present and in the future.更多还原