杭州市主城区大气颗粒物的酸缓冲能力及来源解析  

The buffer capacity of atmospheric particulate matter in Hangzhou city and the source apportionment

作　　者：林丰妹[1] 焦荔[1] 邵科[1] 毕晓辉[2] 徐虹[2] 蒋智伟[1] 

机构地区：[1]杭州市环境监测中心站,浙江杭州310007 [2]国家环境保护城市空气颗粒物污染防治重点实验室,天津300071

出　　处：《环境污染与防治》2013年第5期40-44,共5页Environmental Pollution & Control

基　　金：杭州市科技局农村与社会发展专项课题(No.20081433B02)

摘　　要：通过酸缓冲能力的测定实验,研究杭州市主城区大气颗粒物的酸缓冲能力,并利用二重源解析技术,解析了大气颗粒物中碱性组分的来源。结果表明,杭州市主城区大气颗粒物呈弱碱性,对降水酸度有一定的缓冲作用,但作用较小。总体而言,TSP与PM10的酸缓冲能力与其浓度呈负相关,但相关关系不明显,TSP的酸缓冲能力比PM10强。Ca是影响大气颗粒物酸缓冲能力的关键化学组分。TSP的酸缓冲能力主要来自建筑水泥尘。The acid buffer capacity of atmospheric particulate matter in main urban area of Hangzhou City was studied through the aicd buffer capacity detection experiments. The source of alkaline components in atmospheric par- ticulate matter were analyzed based on the nested chemical mass balance（NCMB） method. The results showed that the atmospheric particulate matter in main urban area of Hangzhou City presented weakly alkaline, its buffer capacity to acid rain was insignificant. Generally speaking, the acid buffer capacity of TSP and PM10 was negative correlated with their concentration, however the correlation was unobvious. The acid buffer capacity of TSP was little stronger than that of PM10. Ca was the key chemical compormnt that influencing the acid bufer capacity of atmospheric particu- late matter; the buffer capacity of TSP was mainly contributed by construction dust.

关 键 词：大气颗粒物 酸缓冲能力 二重源解析技术 

分 类 号：X513[环境科学与工程—环境工程]