为了探讨兰州市大气细颗粒物中水溶性无机组分的污染特征及来源，采集了2012年冬季和2013年夏季PM2．5样品共40个，并利用离子色谱法对其中的无机离子进行了分析．分析结果显示，兰州市PM2．5中无机离子冬季平均值为39．59μg·m－3，夏季平均值为10．71μg·m－3，冬季污染程度远高于夏季，SO2－4、NH＋4和NO－3是3种最主要的水溶性离子；阴阳离子当量回归分析表明，冬季兰州PM2．5组分偏酸性，夏季偏碱性，离子间的结合方式主要以NH4 NO3、（ NH4）2 SO4、NH4 HSO4和NH4 Cl的形式为主，冬季还有少量KNO3、NaNO3、K2 SO4、Na2SO4、KCl和NaCl存在；[NO－3]／[SO2－4]比值的均值冬季为0．58±0．22，夏季为0．49±0．20，说明兰州市的冬季大气污染虽然呈现燃煤源等固定源和机动车尾气等流动源并存的复合污染类型，但仍然以煤烟型污染为主，而夏季NO－3受高温条件影响比较大，机动车尾气污染仍需引起重视．
Forty PM2.5 samples were collected during winter 2012 and summer 2013 in Lanzhou city to investigate the chemical characteristics and sources of WSIN ( Water Soluble Inorganic ) . The concentrations of WSIN were measured using ion chromatography. The levels of WSIN in winter were much higher than those in summer and the average concentrations of WSIN of PM2.5 were 39.59 μg·m-3 in winter and 10. 71 μg·m-3 in summer in Lanzhou, respectively. SO2-4 , NH+4 and NO-3 were the three major WISN. Regression analysis of WSIN equivalent between total cations and total anions showed that PM2.5 was slightly acidic in winter and alkaline in summer in Lanzhou. Water-soluble ions of PM2.5 mainly existed in the forms of NH4NO3, (NH4)2SO4, NH4HSO4 and NH4 Cl, with a few of KNO3 , NaNO3 , K2 SO4 , Na2 SO4 , KCl and NaCl in winter; The average values of [ NO-3 ]/[ SO2-4 ] were 0. 58 ± 0. 22 in winter and 0. 49 ± 0. 20 in summer, respectively, suggesting sources contributed to WISN could be divided into stationary sources ( such as coal combustions) , and mobile sources ( such as motor vehicles) in winter. But the sources of WISN in summer are more complex, particularly at high temperatures. Motor vehicle emissions should be paid more attentions to.
参考文献
| [1] | 沈振兴;李丽珍;杜娜;张婷;曹军骥;李旭祥;朱崇书.西安市春季大气细粒子的质量浓度及其水溶性组分的特征[J].生态环境,2007(4):1193-1198. |
| [2] | 郝明途 .城市大气颗粒物来源解析研究[D].山东大学,2005. |
| [3] | Haidong Kan;Stephanie J. London;Guohai Chen;Yunhui Zhang;Guixiang Song;Naiqing Zhao;Lili Jiang;Bingheng Chen.Differentiating the effects of fine and coarse particles on daily mortality in Shanghai, China[J].Environment international,20073(3):376-384. |
| [4] | Pope-CA 3rd;Ezzati M;Dockery DW.Fine-particulate air pollution and life expectancy in the United States.[J].The New England journal of medicine,20094(4):376-386. |
| [5] | Judith C. Chow;John G. Watson;Joe L. Mauderly;Daniel L. Costa;Ronald E. Wyzga;Sverre Vedal;George M. Hidy;Sam L. Altshuler;David Marrack;Jon M. Heuss;George T. Wolff;C. Arden Pope III;Douglas W. Dockery.Health Effects of Fine Particulate Air Pollution: Lines that Connect[J].Journal of the Air & Waste Management Association,200610(10):1368-1380. |
| [6] | Pope III, C.A.;Ezzati, M.;Dockery, D.W..Fine particulate air pollution and life expectancies in the United States: The role of influential observations[J].Journal of the Air & Waste Management Association,20132(2):129-132. |
| [7] | YELE SUN;GUOSHUN ZH U AN G;AOHAN TANG;YING WANG;AND ZHISHENG.Chemical Characteristics of PM_(2.5) and PM_(10) in Haze-Fog Episodes in Beijing[J].Environmental Science & Technology: ES&T,200610(10):3148-3155. |
| [8] | Min Hu;Ling-Yan He;Yuan-Hang Zhang;Min Wang;Yong Pyo Kim;K.C. Moon.Seasonal variation of ionic species in fine particles at Qingdao, China[J].Atmospheric environment,200238(38):5853-5859. |
| [9] | 兰州市区大气污染与气象条件的关系[J].兰州大学学报,1994(1):132. |
| [10] | 孙旭映;尉元明;庞朝云;李宝梓.兰州城区大气污染物分布特征分析[J].干旱区资源与环境,2004(6):15-18. |
| [11] | 李利平 .兰州市大气气溶胶水溶性离子污染特征研究[D].西北师范大学,2008. |
| [12] | 曲健;李晶;张晶;王成辉;韩艳玉.沈阳市城区采暖期PM2.5中水溶性离子的化学特征[J].中国环境监测,2015(5):57-60. |
| [13] | 高晓梅 .我国典型地区大气PM2.5水溶性离子的理化特征及来源解析[D].山东大学,2012. |
| [14] | 沈振兴;韩月梅;周娟;曹军骥;李旭祥;刘随心.西安冬季大气亚微米颗粒物的化学特征及来源解析[J].西安交通大学学报,2008(11):1418-1423. |
| [15] | 孟琛琛;王丽涛;张芬芬;魏哲;马思萌;杨晶;张宏雷;石成华.邯郸市PM2.5中水溶性无机离子污染特征及来源解析[J].环境科学学报,2015(11):3443-3451. |
| [16] | 刀谞;张霖琳;王超;陈烨;吕怡兵;滕恩江.大同市大气颗粒物浓度与水溶性离子季度分布特征[J].中国环境监测,2015(3):43-51. |
| [17] | 代志光;张承中;李勇;周变红;马文静;韩婧;李文韬.西安夏季PM2.5中碳组分与水溶性无机离子特征分析[J].环境工程学报,2014(10):4366-4372. |
| [18] | 陶俊;张仁健;董林;张涛;朱李华;韩静磊;许振成.夏季广州城区细颗粒物PM2.5和PM1.0中水溶性无机离子特征[J].环境科学,2010(7):1417-1424. |
| [19] | 徐亚;仇猛淋;郑晨龙;田平;王广甫;张仁健.北京市夏季大气气溶胶 PM2.5和 PM10成分特征?[J].北京师范大学学报（自然科学版）,2015(4):362-367. |
| [20] | Lee Eddie;Paatero Pentti;Chan Chak K.Application of positive matrix factorization in source apportionment of particulate pollutants in Hong Kong[J].Atmospheric environment,199919(19):3201-3212. |
| [21] | Chueinta W.;Paatero P.;Hopke PK..Investigation of sources of atmospheric aerosol at urban and suburban residential areas in Thailand by positive matrix factorization[J].Atmospheric environment,200020(20):3319-3329. |
| [22] | 宋宇;唐孝炎;方晨;张远航;胡敏;曾立民.北京市大气细粒子的来源分析[J].环境科学,2002(6):11-16. |
| [23] | Ying Wang;Guoshun Zhuang;Yele Sun;Zhisheng An.Water-soluble part of the aerosol in the dust storm season—evidence of the mixing between mineral and pollution aerosols[J].Atmospheric environment,200537(37):7020-7029. |
| [24] | 韩月梅;沈振兴;曹军骥;李旭祥;赵景联;刘萍萍;王云海;周娟.西安市大气颗粒物中水溶性无机离子的季节变化特征[J].环境化学,2009(2):261-266. |
| [25] | 王亚强;曹军骥;张小曳;沈振兴;梅凡民.中国粉尘源区表土碳酸盐含量与碳氧同位素组成[J].海洋地质与第四纪地质,2004(1):113-117. |
| [26] | Ye BM.;Ji XL.;Yang HZ.;Yao XH.;Chan CK.;Cadle SH.;Chan T.;Mulawa PA..Concentration and chemical composition of PM2.5 in Shanghai for a 1-year period[J].Atmospheric environment,20034(4):499-510. |
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