摘要
研究了城市居住区空气中苯、甲苯、二甲苯的采集和测量方法．分别在受污染居住区和未受污染居住区用活性炭吸收法采集空气，用气相色谱法测定苯系物．讨论了活性炭的吸收效率，苯系物的分离、测定方法的准确度和精密度．测得某城市居住区空气中苯、甲苯、二甲苯的日均值分别为０．０３２，０．０４８，０．０４０ｍｇ／ｍ３．
Method of measurement and collection of benzene, toluene and xylenes in the air of urban residential district was studied. The air samples was absorbed by charcoal from an unpolluted residential district and a polluted residential district, The samples were analysed by gas chromatography. Absorbance of charcoal, separation of bezene hydrocarbon, accuracy and precision are discussed. The separate values of benzene, toluene and xylene were 0.032, 0.048, 0.040mg/m3.
