单颗粒气溶胶质谱和手工监测分析环境空气颗粒物特征组分的比对  

Comparative study on the characterization of air particulate matters based on SPAMS and off-line filter analyses

作　　者：张霖琳[1] 王超[1] 吕怡兵[1] 王业耀[1] ZHANG Linlin;WANG Chao;LV Yibing;WANG Yeyao(China National Environmental Monitoring Centre,Beijing,100012,China)

机构地区：[1]中国环境监测总站,北京100012

出　　处：《环境化学》2018年第11期2419-2424,共6页Environmental Chemistry

基　　金：大气污染多组分成因与控制技术研究专项(2016YFC0208500)资助~~

摘　　要：在北京典型城市混合功能区点位选择8月和12月,开展手工采样-离线分析技术与在线单颗粒气溶胶质谱仪(SPAMS)测定环境空气颗粒物及其特征组分的比对研究,重点比较OC/EC、水溶性离子和元素等30余种特征组分的监测结果,考察在线监测设备在获得的颗粒物源解析特征组分上与传统手工方式的可比性.结果表明,SPAMS在不同季节测得的颗粒物数浓度与手工滤膜采样得到的颗粒物质量浓度存在一定的可比性;在线和手工方法监测颗粒物中OC、K^+、NH_4^+、Na^+、NO_3^-、SO_4^(2-)、Pb、Cd、Cr、Zn、Mo等组分在不同季节均存在一定的可比性,8月份可比的组分有13个,12月份可比的组分有22个(r值大于0.5),其原因可能与冬季颗粒物及其特征组分的浓度较高且样本量的离散程度增加有关.SPAMS能够快速得到高时间分辨的细颗粒物质量和组分含量的变化趋势,可以作为常规源解析的重要辅助和补充.Single particle aerosol mass spectrometry（ SPAMS） was deployed to continuously monitor the air particles in Beijing during August and December 2014. More than 30 parameters including organic carbon（ OC）,elemental carbon（ EC）,elements and water soluble anions in PM（2.5） were analyzed using OC/EC analyzer,ICP-MS,ICP-AES and ion chromatography. The results of SPAMS were compared to those in off-line filter analyses. It showed that the concentrations of PM（2.5） monitored by gravimetric measurement method were comparable to those from SPAMS. Parameters including OC,K＋,NH4＋,Na＋,NO3-,SO4（2-）,Pb,Cd,Cr,Zn and Mo were also comparable between August and December. 13 components in August and 22 components in December were found to be correlative by liner regression with the R values higher than 0. 5. The method of real-time online source analysis could be an important supplement to the manual sampling and off-line analyses,which would be very helpful in finding the changes and trends of the particulate matter and their chemical characteristics quickly.

关 键 词：SPAMS 颗粒物 手工监测 特征组分 

分 类 号：X513[环境科学与工程—环境工程]