作　　者： ; ; ;

机构地区： 信息产业部电子第五研究所

出　　处： 《分析化学》 2011年第2期265-268,共4页

摘　　要： 汽车沙发部件在热环境中,会释放出许多挥发性有机物(VOC),污染环境,危害人体健康。本研究将汽车沙发放置在2 m3特制塑料采样袋中,在热环境下释放挥发性有机物,然后以Tenax管富集有机物,用热脱附-气相色谱质谱进行分析。结果表明:汽车沙发在热环境状态下,挥发出大量有机物,共定性检测出49种挥发性有机物(VOC),包括11种烷烃(7.46%)、13种芳香类化合物(6.02%)、5种醇醚类化合物(10.33%)、5种酮类化合物(3.56%)、7种酯类化合物(29.51%)、2种醛类化合物(0.50%)、2种含氮类化合物(29.36%)及4种硅氧烷类化合物(5.51%)。通过将释放的挥发性有机物量换算成车内空气污染浓度可见,一个副驾驶位沙发释放的挥发性有机物对车内空气污染贡献浓度达7.36 mg/m3,是国家室内限值标准的12倍,污染十分严重。 There are many volatile organic compounds emissions from car chair in thermal condition to pollute environment and affect the health of the people.A method for the detection of volatile organic compounds from emissions of automobile chair parts in the thermal condition by TD-GC/MS was developed.The automobile Chair sample was put into a special plastic bag of 2 m^3,the volatile organic compounds were emitted in the thermal condition,then were collected with a Tenax adsorption tube,and were tested by thermal desorption-gas chromatography-mass spectrometry.The total numbers of identified components were 49 VOCs emitted from the automobile chair in the thermal condition,including alkenes（11,7.46%）,aromatic compounds（13,6.02%）,alcohols（5,10.33%）,ketones（5,3.56%）,esters（7,29.51%）,aldehydes（2,0.50%）,N-containing compounds（2,29.36%） and siloxane（4,5.51%）.If the content of VOC emissions was converted into the concentrations in the automobile air,the total volatile organic compounds（TVOC）is 7.361 mg/m^3,which was 12 times over the tolerable concentrations prescribed in the standard.

关 键 词： 热环境 吸附管 挥发性有机物 热脱附 气相色谱 质谱

领　　域： [环境科学与工程]