大连冬季居室主要挥发有机物及二氧化氮检测  

Detection of main indoor VOCs and nitrogen dioxide in winter in Dalian city

作　　者：王亚辰[1] 邵小翠[1] 朴丰源[1] 郭鹏[2] 横山和仁 上岛通浩[3] 

机构地区：[1]大连医科大学劳动卫生与环境卫生学教研室,辽宁大连116044 [2]日本顺天堂大学医学部卫生学教研室 [3]名古屋大学大学院职业卫生与环境卫生学教研室

出　　处：《中国公共卫生》2011年第9期1187-1188,共2页Chinese Journal of Public Health

摘　　要：目的了解冬季居室空气中主要挥发性有机物(VOCs)和二氧化氮的污染水平及其影响因素。方法于2009年1月对辽宁省大连市某小区随机选择装修后不同时期的99户居室,测定卧室、厨房及室外空气中主要挥发性有机物和二氧化氮浓度,同时对居民基本情况进行问卷调查。结果卧室空气中甲醛、苯、甲苯和二甲苯的浓度分别为37.3,6.8,15.5和9.0μg/m3,厨房分别为39.8,12.7,18.8和9.8μg/m3,卧室和厨房空气中甲醛、苯、甲苯和二甲苯的浓度均高于室外浓度(P<0.05);装修时间在1年内的卧室和厨房空气中3种苯类有机化合物的浓度均明显高于装修时间≥1年的卧室和厨房空气浓度;摆放绿色植物的居室中甲醛和二氧化氮浓度明显低于未摆放绿色植物的居室(P<0.05)。结论冬季装修居室内存在主要VOCs污染,其浓度随装修后时间的增加而降低,尤其3种苯类有机化合物的浓度下降较快。室内绿色植物对室内污染物有一定的吸附和消除作用。Objective To determine concentrations of main indoor volatile organic compounds （VOCs） and nitrogen dioxide pollution level and their influencing factors. Methods According to different time after room decoration,99 house- holds were randomly selected in a residential district of Dalian. Air was sampled in bedroom, kitchen and outdoor and a questionnaire survey was conducted among the residents of the district. Nitrogen dioxide and VOCs in the air samples were determined. Results In the bedrooms, the concentrations of formaldehyde, benzene, toluene, and xylene were 37.3,6. 8, 15.5, and 9.0 μg/m^3 and those of in the kitchen were 39. 8,12. 7,18.8, and 9.8μg/m^3 , respectively. The indoor concentra- tions of VOCs were higher than those of outdoor（ P 〈 0. 05 ）. Within one year after decoration, the concentration of benzene, toluene, and xylene in bedroom and kitchen were significantly higher than those more than one year after decoration （ P 〈 0. 05）. The concentration of formaldehyde and nitrogen dioxide in the rooms which green plants were placed were lower than those of without green plants（ P 〈 0. 05 ）. Conclusion In winter, VOCs are the main indoor pollutants in decorated rooms. The concertration of the main VOCs decreases with the time after decoration, especially benzene, toluene, and xylene which decrease rapidly. Indoor plants can absorb and eliminate indoor air pollution to some extent.

关 键 词：挥发性有机物 二氧化氮 室内空气污染 

分 类 号：R195[医药卫生—卫生统计学]