《Quantitative relationship between visibility and mass concentration of PM2.5 in Beijing》.pdf

ISS J0urMf CN o，E删IronH撼n￡出selPMesV01．18，No．3，pp．475—48l，2006 ll一2629／X A嘣cle CLC删mber：x131．2D哪eⅡtcode：A m：100l—0742(2006)03-0475-07 QuantitatiVe between mass of relationshipVisibili姆and PM2．5in Beijing wANG Jing—lil，皿ANG Min2’，uuxu-lin3，zENG Yuan_han矿，sHAo Cong—lanl，XUXiao—fen91 ofurban Joim (1．TnstitI】te Meteomlogy，ch{naMeteor0109ical Admjnistration，Be巧ing Key ofEnVir0岫en诅1simulationand刚ution ofEnVimnmental Laboratory control，college 100871，china． sciences，PekingUniversl吼Be巧1ng a|1d cn；3 Net、vork E一Ⅱlail：mshao@pku．eduBe面ingMeteoroIogicaIInfornl撕oncent％Be玎ing100089，china) Abstract：Theof in pollutionparticlJIatematter1essthan2．5LIIn(PM2．5)isaseriouseIⅣimnmentalDmblemBeijing．Theannual concentrationofPM25in averaPre 2001仟omseasonalmonitorresultswasmoret11an6tilnesⅡlatoftheU．S．nadonalambientair and U．S．EPA．Themajorcon伍buforsto瑚assofPM2．5were elementssulfa把．The quali“standa埘sproposcdby organics，cmstal ofPM2．5 chemjcalcompositionvaried1argelywithseason，butwassillmaratdi丘苦rentmonitorstationsinthesamesea!；on．Thefine deter