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大学校园室内BTEX浓度水平变化规律及健康风险
引用本文:冯利,黄慧,Chul-ho Shin,吴桂萍,崔龙哲.大学校园室内BTEX浓度水平变化规律及健康风险[J].环境科学与技术,2012(11):191-194.
作者姓名:冯利  黄慧  Chul-ho Shin  吴桂萍  崔龙哲
作者单位:湖北省环境监测中心站;中南民族大学化学与材料科学学院;Seohae Enviromment Science Institute
摘    要:采用Tenax-TA吸附/热脱附-气相色谱法(TD-GC)对大学校园室内外空气中5种苯系物(BTEX,苯、甲苯、乙苯、间/对-二甲苯和邻二甲苯)的平均浓度进行了检测。检测结果显示,5种苯系物的平均浓度均低于国家标准值。被测空气的苯系物中甲苯所占比例最大,为27.9%~32.0%。室内BTEX浓度稍高于室外,多数采样点的室内浓度与室外浓度比值(CI/CO)大于1.0。通风可有效降低空气中苯系物浓度。大学校园室内空气中的苯对学生的致癌风险为3.67×10-7~1.09×10-6。

关 键 词:室内空气  苯系物  热脱附-气相色谱  健康风险

Concentration,Variation and Risk Assessment of BTEX in the Indoor Air of a University Campus
FENG Li,HUANG Hui,Chul-ho SHIN,WU Gui-ping,CUI Long-zhe.Concentration,Variation and Risk Assessment of BTEX in the Indoor Air of a University Campus[J].Environmental Science and Technology,2012(11):191-194.
Authors:FENG Li  HUANG Hui  Chul-ho SHIN  WU Gui-ping  CUI Long-zhe
Institution:1.Hubei Envirommental Monitoring Central Station,Wuhan 430072,China; 2.School of Chemistry and Material Science,Central South University for Nationalities,Wuhan,430074,China; 3.Seohae Environment Science Institute,Korea,565854)
Abstract:Average concentrations of five BTEX compounds including benzene,toluene,ethylbenzene,m,p-xylenes and o-xylene in indoor and outdoor air samples collected from a university campus were determined by thermal desorption and gas chromatography(TD-GC) coupled systems.Results showed that all concentrations of benzene,toluene and the xylenes met the indoor air quality standard of China.Average concentrations of toluene accounted for the largest percent(27.9%~32.0%)of the 5 compounds determined.The indoor concentrations of BTEX were a little higher than their outdoor counterparts.The ratios of indoor/outdoor(I/O) BTEX concentrations were more than 1.0 in most sampling sites.The BTEX pollution attribute to ventilation helps to reduce BTEX concentration in air.The cancer risk of BTEX in university campus was ranged from 3.67×10-7 to 1.09×10-6.
Keywords:indoor air  BTEX  TD-GC  health risk
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