摘要
为研究锦州市春季PM_(2.5)样品中碳组分特征与来源,该研究于2018年4月采集锦州市5个点位的PM_(2.5)样品。分析结果表明,锦州市春季PM_(2.5)、有机碳(OC)和元素碳(EC)的日均浓度分别为(98.55±50.02)、(11.22±7.90)和(3.57±1.32)μg/m^(3),空气污染较重。5个采样点的OC、EC均线性相关,表明春季OC和EC具有较高的同源性。基于MRS方法计算出春季SOC的浓度为3.79μg/m^(3),占OC含量的33.78%,是OC的重要组成部分。通过比值分析和主成分分析得出锦州市春季PM_(2.5)中碳组分主要来源为机动车尾气和燃煤排放。
In order to study the characteristics and sources of carbon components in PM_(2.5) during spring in Jinzhou City,PM_(2.5) samples were collected from five sites in April 2018.The results showed that the average concentrations of PM_(2.5),organic carbon(OC)and element carbon(EC)were(98.55±50.02),(11.22±7.90)and(3.57±1.32)μg/m^(3) in spring respectively,which indicated heavy pollution.OC was correlated with EC at all sampling sites,indicating their high homology.Based on the MRS method,the SOC concentrations were 3.79μg/m^(3) in spring,accounting for 33.78%of the total OC.By means of ratio analysis and principal component analysis,the main sources of carbon components were vehicle exhaust and coal-fired emissions.
作者
陈军
国纪良
姬亚芹
CHEN Jun;GUO Jiliang;JI Yaqin(Jinzhou Ecological Environment Monitoring Center of Liaoning Province,Jinzhou 121001,China;College of Environmental Science and Engineering,Nankai University,Tianjin 300350,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2020年第10期165-170,共6页
Environmental Science & Technology
