细颗粒物(PM_(2.5))可溶性提取液对发光细菌的光抑制与组分浓度的相关性分析  

Correlation between luminous inhibition rate of water-soluble constituents and composition of PM_(2.5)

作　　者：孙成华[1,2] 石爱军[1,2] 刘保献[1,2] 张大伟[1,2] 陈添[3] 洪姗姗[1,2] 周健楠[1,2] 杨柳[1,2] 王琰[1,2] 

机构地区：[1]北京市环境保护监测中心,北京100048 [2]大气颗粒物监测技术北京市重点实验室,北京100048 [3]北京市环境保护局,北京100048

出　　处：《环境科学学报》2016年第9期3488-3494,共7页Acta Scientiae Circumstantiae

基　　金：北京市环境保护监测中心自筹经费项目(No.2014-017)~~

摘　　要：为科学评估PM_(2.5)对生物体的综合生物效应,利用费氏弧菌检测了PM_(2.5)水溶性提取液的光抑制效应,统计分析了227组PM_(2.5)主要组分与发光抑制率的相关关系.实验结果表明:PM_(2.5)水溶性提取液的发光抑制率值与OC、NO-3、EC和微量元素等组分浓度显著相关,相关系数从高到低的排序为:OC>微量元素>EC>NO-3(p<0.01).PM_(2.5)中,主要来自燃煤、交通燃油、生物质燃烧及冶金工业污染源排放的组分(苯并(a)芘、Cl-、OC、Cu、K+、Mn、Zn、EC、Pb、Se、F-等)浓度与发光抑制率显著相关.此外,二次来源的NO-3、NH+4等组分浓度与发光抑制率在冬季和春季显著相关.Air pollution exposure is associated with a range of adverse health impacts. For scientific assessment of the comprehensive biological effects of PM2.5,a series of toxicity tests with the PM2.5water-soluble components were performed on luminescent bacterium by using Vibrio fischeri as an indicator bacterium for 1 year in 2014. The relationship between the luminous inhibition rate and the concentration of chemical components in 227 PM2.5samples were analyzed. Our results showed that the luminous inhibition rate had a significant correlation with the concentration of chemical components in PM2.5.The correlation coefficient followed the order of OC 〉 trace metal elements 〉 EC 〉 NO-3（ p〈0.01）. The concentration of PM2.5constituents including benzo（ a） pyrene,Cl-,OC,Cu,K＋,Mn,Zn,EC,Pb,Se,and F–discharged by the combustions of coal and biomass,traffic emissions,and metallurgical industry emissions had a significant correlation with the luminous inhibition rate. We also observed a high correlation between the luminousinhibition rate and the concentration of NO-3and NH＋4formed by secondary processes in winter and spring.

关 键 词：发光细菌 生物毒性测试 发光抑制率 细颗粒物(PM2.5) 

分 类 号：X171.5[环境科学与工程—环境科学]