西安住宅室内空气醛酮类污染物特征  

Characterization of indoor carbonyl compounds at residential homes in Xi'an

作　　者：董俊刚[1] 曹军骥[1] 王蓓[2] 李顺诚[2] 何建辉[2] 

机构地区：[1]中国科学院地球环境研究所黄土与第四纪地质国家重点实验室 [2]香港理工大学土木与结构工程系

出　　处：《中国科学院研究生院学报》2007年第5期692-698,共7页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：中国科学院地球环境研究所第四纪地质国家重点实验室开放基金(SKLLQG0521)资助

摘　　要：采用主动式气体采样、2，4-DNPH二硝基苯肼吸收、高效液相色谱（HPLC）分析研究了西安市冬、夏2季3所普通居民住宅室内、外空气中13种醛酮类化合物．结果表明：冬、夏2季西安地区住宅室内空气中醛酮类污染物质量浓度水平均较高．其中，夏季室内、外空气中13种醛酮类化合物总质量浓度为（85．86±30．33）μg·m^-3和（78．86±31．40）μg·m^-3；冬季为（85．40±28．50）μg·m^-3和（53．77±16，39）μg·m^-3．室内均高于室外；甲醛、乙醛、丙酮为最高组分，三者为总质量的75％～80％；3所住宅中，2号住宅醛类污染物严重，表明装修材料（木地板）与吸烟均有一定程度贡献．Thirteen carbonyl compounds in indoor and outdoor air at three general residential homes in Xi＇an during winter and summer were detected and quantified by using active gaseous sampling with 2,4-DNPH absorption and the following HPLC analyses. The resuhs indicated that the concentrations of carbonyl compounds were relatively high indoors both in winter and summer. Averaged concentrations of carbonyl compounds were （85.86 ± 30.33） μg · m^-3, and （78.86 ± 31.40） μg· m^-3 , respectively, for indoors and outdoors in summer. The corresponding values were （85.40 ± 28.50）μg· m^-3, （53.77 ± 16.39）μg· m^-3, respectively, in winter.Concentration levels of carbonyl compounds indoors were higher than those outdoors. Formaldehyde, acetaldehyde, and acetone were the highest components, accounted for 75 % - 80% of total mass of carbonyl species. Concentrations of carbonyl compounds in H2 （the second residential home） were larger than those in other two houses, which implied that decorated materials and smoking contributed significantly to the high concentrations of carbonyl species in H2.

关 键 词：醛 酮 室内空气污染 西安 

分 类 号：X502[环境科学与工程—环境工程]