大气颗粒物酸性研究  

STUDY ON THE ACIDITY OF PARTICULATE MATTERS

作　　者：谢鹏[1] 霍铭群[1] 孙倩[1] 刘兆荣[1] 白郁华[1] 李金龙[1] 

机构地区：[1]北京大学环境科学与工程学院,北京100871

出　　处：《环境化学》2009年第5期626-629,共4页Environmental Chemistry

基　　金：国家重点基础研究发展计划(973)项目(NO.2005CB422204);国家高技术研究发展计划(863)项目(NO.2006AA06A309)

摘　　要：采集了北京市2007年1月总悬浮颗粒物(TSP)、PM10和PM2.5样品,将TSP样品溶解在pH=5.60稀硫酸溶液中,用反滴法测定了颗粒物在酸性条件下的酸度和潜在酸性,评价了实际大气环境下颗粒物对降水酸化的影响.TSP, PM10 and PM2.5 were collected in Beijing in January, 2007. The acidity and acidification buffering capacity of particles were measured. TSP samples were dissolved in diluted sulfuric acid （ pH = 5.60） , and the retro-titration method was used to get the acidity and potential acidity of particulate matters. The influence of particles on precipitation acidification in the real air environment was also evaluated.

关 键 词：颗粒物 酸度 酸化缓冲能力 潜在酸性 

分 类 号：X513[环境科学与工程—环境工程] TS745[轻工技术与工程—制浆造纸工程]