摘要
2004年7月2日至8月13日和2004年11月29日至2005年1月6日分别在广州市3种类型区域(一般城市区域、道路旁、工业源附近)9个居民住宅的室内和室外同步采集了PM2.5颗粒。采用标准称重法测定PM2.5质量浓度,得到广州市夏季住宅室内外PM2.5平均质量浓度分别为67.7、74.5μg/m3,冬季室内外PM2.5平均质量浓度分别为109.9、123.7μg/m3。广州市PM2.5平均质量浓度,与美国PM2.5标准相比,与国内PM10标准基础上假设的PM2.5限值相比,与其他一些国内、亚洲和欧美城市的文献记录相比,结果均显示广州市PM2.5处于相当严重污染状态。广州市PM2.5质量浓度呈现明显的空间分布特征和季节变化特征;PM2.5室内质量浓度并不总是低于室外质量浓度,反映了室内空气污染的存在。
Daily （24-h average） PM2.5 （aerodynamic diameter 〈5 2.5 m） were eollected inside and outside nine residential homes simultaneously in 3 kinds of urban area in Guangzhou city from July 2 to August 13,2004 and from November 29,2004 to January 6,2005, respectively. Average mass concentrations of PM2.5 were determined by using standard weight method. During summer sampling period, average indoor and outdoor concentrations of PM2. 5 in Guangzhou were 67.7 μg/m^3 and 74.5 μg/m^3 ,respectively,and during winter sampling period average indoor and out door concentrations of PM2. 5 in Guangzhou were 109. 9 μg/m^3 and 123.7 μg/m^3, respectively. The PM2.5 concentrations of Guangzhou were compared with that of NAAQS in USA,with 3 kinds of specific fractions of PM10 standard value of China,and with the PM2.5 records of other cities in China,Asia,Europe and USA,respectively. Results indica ted that PM2.5 pollution in Guangzhou was very severe. In addition,it was found that mass concentrations of PM2.5 in Guangzhou showed obvious spatial distribution and seasonal variation characteristics. Mass concentrations of indoor PM2.5 were not always lower than that of the outdoor,implying presence of indoor air pollution.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2006年第12期954-958,共5页
Environmental Pollution & Control
基金
黄土与第四纪地质国家重点实验室开放基金资助项目(SKLLQG0610)。
