环境科学导刊
環境科學導刊
배경과학도간
ENVIRONMENTAL SCIENCE SURVEY
2014年
2期
57-61
,共5页
PM2.5%源解析%冬季%镇江
PM2.5%源解析%鼕季%鎮江
PM2.5%원해석%동계%진강
PM2.5%Source analysis%winter%Zhenjiang
采集了镇江环境监测站1月份的PM2.5样品，用SPAMS 0515对PM2.5来源进行解析，结果显示，对镇江市区冬季环境空气有明显贡献的颗粒物来源是汽车尾气、燃煤、工业排放和扬尘，4者的贡献率分别为汽车尾气占22.5％、燃煤占16.3％、工业源占13.6％、扬尘占11.8％。镇江市区冬季PM2.5颗粒中，汽车尾气、燃煤分布在小粒径段，扬尘分布在大粒径段。日间汽车尾气和扬尘对PM2.5增高的影响增大，早高峰、晚高峰汽车尾气贡献增长。PM2.5中含的Mn、Fe、Cr、Zn、Pb 5种金属元素颗粒中含Pb颗粒数量最大。
採集瞭鎮江環境鑑測站1月份的PM2.5樣品，用SPAMS 0515對PM2.5來源進行解析，結果顯示，對鎮江市區鼕季環境空氣有明顯貢獻的顆粒物來源是汽車尾氣、燃煤、工業排放和颺塵，4者的貢獻率分彆為汽車尾氣佔22.5％、燃煤佔16.3％、工業源佔13.6％、颺塵佔11.8％。鎮江市區鼕季PM2.5顆粒中，汽車尾氣、燃煤分佈在小粒徑段，颺塵分佈在大粒徑段。日間汽車尾氣和颺塵對PM2.5增高的影響增大，早高峰、晚高峰汽車尾氣貢獻增長。PM2.5中含的Mn、Fe、Cr、Zn、Pb 5種金屬元素顆粒中含Pb顆粒數量最大。
채집료진강배경감측참1월빈적PM2.5양품，용SPAMS 0515대PM2.5래원진행해석，결과현시，대진강시구동계배경공기유명현공헌적과립물래원시기차미기、연매、공업배방화양진，4자적공헌솔분별위기차미기점22.5％、연매점16.3％、공업원점13.6％、양진점11.8％。진강시구동계PM2.5과립중，기차미기、연매분포재소립경단，양진분포재대립경단。일간기차미기화양진대PM2.5증고적영향증대，조고봉、만고봉기차미기공헌증장。PM2.5중함적Mn、Fe、Cr、Zn、Pb 5충금속원소과립중함Pb과립수량최대。
Air was sampled in January in Zhenjiang.The Single Particle Aerosol Mass Spectrometer (SPAMS0515) was applied to examine the sources of PM2.5 .The results showed that the sources of PM2.5 were from tail gas,coal-burning,discharge from the industry,and dust.Their contribution rates were 22.5%,16.3%,13.6%,and 1 1.8% respectively.PM2.5 from tail gas and coal burning form the smaller particles.However,dusts become big-ger particles.The increase of PM2.5 in the day time was correlated closely to tail gas and dust,especially in the rus-hing hours in the morning and in the afternoon.Five heavy metals (Mn,Fe,Cr,Zn,and Pb)were found on PM2.5 particles.The particles with the most of Pb absorbed have the biggest size.
