杭州市居室空气中芳香族化合物污染研究

Pollution Survey of Aromatic Compounds in Indoors Air of Hangzhou

用热解吸/气质联用技术研究了杭州市居室空气中芳香族化合物的组成。结果表明:杭州市居室空气中共存在60种芳香族化合物,其中苯系化合物48种,非苯芳香族化合物12种,检出率大于50%的23种;在10种非苯芳香族化合物,茚、二氢甲基-1H-茚、二氢二甲基-1H-茚、六氢四甲基亚甲基奥、戊基呋喃等5种化合物的总含量之比为77%-96%,是主要的非苯芳香族化合物污染物,在48种苯系化合物中,苯、甲苯、乙苯、苯乙烯、邻二甲苯、间(对)二甲苯、1,2,4-三甲苯、1,3,5-三甲苯、乙基甲苯、丙烯基苯、乙基二甲苯、二乙基苯、萘等13种的总含量之比大于97%,是室内空气中最主要的苯系污染物。

The aromatic compounds in indoors air of Hangzhou have been researched with the method of desorption and GC/MS. The results show that 60 romatic compounds exist in indoors air, which include 48 benzene series and 12 others aromatic compounds, the inspection rates of 23 are exceeding 50%. In 48 benzene series, benzene, toluene, ethylbenzene, styrene, o,m,p-xylene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, ethyltoluene, propenylbenzene, ethylxylene,diethybenzene and naphthalene are the major contaminants, the total content of which reaches 77%-96%.In 10 others aromatic compounds, indene, pentylfuran, dihydromethyl -1H- indene and dihydrodimethyl -1H- indene are the major contaminants, the total content of which exceeds 97%.The main pollution sources may be automobile exhaust, the organic compounds remaining in the decorating material and cleansing commonly used in family.