本文選題：大氣污染 + 冬季　； 參考：《環(huán)境與健康雜志》2016年01期

【摘要】：目的探討蘭州市冬季室內(nèi)外顆粒物污染特征及其理化特性。方法于2012年11月至2013年1月在不同采樣點(混合區(qū)、工業(yè)區(qū)、郊區(qū)、公共場所)連續(xù)采集大氣顆粒物(PM2.5和PM10)樣品,分別采用離子色譜法和原子吸收分光光度法測定PM2.5和PM10中水溶性離子(F-、Cl-、NO3-、SO42-、Na+、NH4+、K+、Mg2+、Ca2+)和重金屬(Fe、Pb、Cd和Cu)。結(jié)果調(diào)查期間PM2.5和PM10濃度均超過GB 3095—2012《環(huán)境空氣質(zhì)量標(biāo)準》二級標(biāo)準限值。除公共場所PM2.5外,其余采樣點PM2.5和PM10污染均呈現(xiàn)為室外高于室內(nèi);室內(nèi)顆粒物中水溶性離子主要為SO42-、NO3-、Cl-和NH4+,室外主要為SO42-、NO3-和Cl-;水溶性離子對PM2.5的貢獻室外高于室內(nèi),對PM10的貢獻則相反;室內(nèi)外顆粒物中重金屬污染均表現(xiàn)為室外高于室內(nèi),城區(qū)高于郊區(qū),且Fe污染水平整體較高,Pb、Cd分別在混合區(qū)和工業(yè)區(qū)污染較重。結(jié)論本次調(diào)查的蘭州市冬季室內(nèi)外顆粒物污染較為嚴重,應(yīng)進一步關(guān)注顆粒物中水溶性離子、鉛、鎘的污染水平。
[Abstract]:Objective to study the indoor and outdoor particulate pollution and its physical and chemical characteristics in Lanzhou. Methods from November 2012 to January 2013, atmospheric particulate matter (PM2.5 and PM10) samples were collected from different sampling sites (mixed areas, industrial areas, suburbs, public places). Ion chromatography and atomic absorption spectrophotometry (AAS) were used to determine the water-soluble ions (F-Cl-no _ 3-O _ 4SO _ 42-Na), NH _ 4-K _ 2O _ (2) mg _ (2) Ca ~ (2 +) and the heavy metals (Fe, Pb, CD and Cu ~ (2 +)) in PM2.5 and PM10, respectively. Results during the investigation period, the concentrations of PM2.5 and PM10 exceeded the second class limit of GB 3095-2012. Except for PM2.5 in public places, the pollution of PM2.5 and PM10 in other sampling sites was higher than that in indoor, the main water-soluble ions in indoor particulate were so _ 42-no _ 3-O _ 3-Cl- and NH4, and so _ 42-no _ 3- and Cl _ (-) in outdoor, and the contribution of water-soluble ions to PM2.5 was higher than that in indoor. The pollution of heavy metals in indoor and outdoor particulate matter was higher than that in indoor, urban area was higher than that in suburban area, and Fe pollution level was higher than that in suburban area, and the pollution level of Fe was higher in mixed area and industrial area, respectively. Conclusion the indoor and outdoor particulate pollution in Lanzhou is serious in winter, and the pollution level of water soluble ions, lead and cadmium should be paid more attention to.
【作者單位】： 蘭州大學(xué)資源環(huán)境學(xué)院;甘肅省環(huán)境污染預(yù)警和控制重點實驗室;蘭州大學(xué)大氣科學(xué)學(xué)院;
【基金】：國家自然科學(xué)基金(41075102) 中央高�；究蒲袠I(yè)務(wù)費專項資金(lzujbky-2013-m03;lzujbky-2014-101)
【分類號】：R122;X513

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