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宁波市区冬季大气颗粒物及其主要组分的污染特征分析
引用本文:汪伟峰,俞杰,许丹丹,周国韧. 宁波市区冬季大气颗粒物及其主要组分的污染特征分析[J]. 中国环境监测, 2013, 29(5): 43-46
作者姓名:汪伟峰  俞杰  许丹丹  周国韧
作者单位:宁波市环境监测中心, 浙江 宁波 315012;宁波市环境监测中心, 浙江 宁波 315012;宁波市环境监测中心, 浙江 宁波 315012;宁波市环境监测中心, 浙江 宁波 315012
摘    要:为了更好地研究影响宁波市区环境空气质量的污染物变化特征,于2010年1月20—30日进行了加强监测。研究结果表明,宁波市区大气中PM10和PM2.5质量浓度较高,其中PM2.5/PM10为0.5~0.85。对PM10和PM2.5采样膜分析,水溶性粒子和含碳组分分别占PM10和PM2.5质量浓度的56.7%和66.9%,其中二次污染的水溶性离子SO42-、NO3-和NH4+是PM10和PM2.5中浓度较高的离子组分;PM2.5样品中OC与EC的相关性较好,表明OC与EC的来源相对一致,可能主要来自机动车尾气的贡献;但PM10样品中OC与EC的相关性较差,表明其来源相对复杂;其中SOC的浓度占OC的13%~35%,说明宁波市区冬季导致二次污染的光化学反应不活跃。

关 键 词:灰霾  PM10  PM2.5  有机碳  无机碳  二次有机碳
收稿时间:2012-03-14
修稿时间:2012-07-30

Pollution Characteristics of Particles and Its Main Components in Ningbo Urban Atmosphere
WANG Wei-feng,YU Jie,XU Dan-dan and ZHOU Guo-ren. Pollution Characteristics of Particles and Its Main Components in Ningbo Urban Atmosphere[J]. Environmental Monitoring in China, 2013, 29(5): 43-46
Authors:WANG Wei-feng  YU Jie  XU Dan-dan  ZHOU Guo-ren
Affiliation:Ningbo Environmental Monitoring Centre, Ningbo 315012, China;Ningbo Environmental Monitoring Centre, Ningbo 315012, China;Ningbo Environmental Monitoring Centre, Ningbo 315012, China;Ningbo Environmental Monitoring Centre, Ningbo 315012, China
Abstract:In order to better study the impact of Ningbo urban air quality changes in characteristics of pollutants, to strengthen monitoring from January 20th to 30th, 2010. The results show that higher concentrations of PM10 and PM2.5 mass in the atmospheric of Ningbo urban, and the ratio of PM2.5/PM10 is between 0.5 and 0.85. Through PM10 and PM2.5 sampling film analysis,water-soluble components of particles and carbon, respectively, accounted for PM10 and PM2.5 mass concentration of 56.7% and 66.9%, and one secondary pollution of water-soluble ion SO42-, NO3- and NH4+ is a higher concentration of PM10 and PM2.5 in the ion composition. OC and EC has a good correlation in the PM2.5 sample, which indicated that the source of OC and EC is relatively consistent, probably mainly from the contribution of vehicle exhaust. However, OC and EC has a poor in correlation PM10 samples, which indicated that the source of OC and EC is relatively consistent, probably mainly from the contribution of vehicle exhaust. However, OC and EC has a poor in correlation PM10 samples, which indicated that the source is relatively complex. The ratio of SOC/OC is between 13% and 35%, which indicated secondary pollution of photochemical reactions are not active in Winter in Ningbo city.
Keywords:haze  PM10  PM2.5  OC  EC  SOC
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