摘要
应用GCMS-QP2010对深圳2015~2016年4个季节大气56种非甲烷碳氢化合物(NMHCs)进行在线监测分析.从成分来看,四季总NMHCs平均浓度为23.6×10^(-9),呈现出冬季>秋季>夏季≈春季的变化特征,其中烷烃比例最高(65.4%~74.7%),其次是芳香烃(13.3%~21.7%)和烯烃(7.1%~11.6%),丙烷、甲苯、乙烷、正己烷、正丁烷、乙炔、2-甲基戊烷、异丁烷、乙烯和3-甲基戊烷是浓度最高的10个物种.相关性和日变化分析表明,深圳大气中NMHCs受到机动车、溶剂挥发相关工业源以及植物释放等多重来源的共同影响,其中甲苯、2-甲基戊烷、3-甲基戊烷和正己烷受工业源影响最为显著,而异戊二烯主要来自于天然源.
Online GCMS-QP2010 was utilized to monitor 56kinds of atmospheric non-methane hydrocarbons(NMHCs)during the four seasons from 2015 to 2016 in Shenzhen.The annual mean concentration of total NMHCs was 23.6×10-9,while the highest total concentration of NMHCs was found in winter,followed by autumn,and the minimal concentration occurred in summer and spring.Alkanes were the most abundant components(65.4%~74.7%)in atmospheric NMHCs in Shenzhen,followed by aromatics(13.3%~21.7%)and alkenes(7.1%~11.6%).We also found that the concentrations of propane,toluene,ethane,hexane,butane,acetylene,2-methyl pentane,isobutane,ethene and 3-methyl pentane ranked the top ten species in the measured NMHCs.The results of correlation and diurnal variation analysis indicated that atmospheric NMHCs in Shenzhen were simultaneously influenced by vehicle emission,industrial sources(e.g.,solvent evaporation)and plant emission.Toluene,2-methyl pentane,3-methyl pentane and hexane were predominantly affected by industrial sources,while isoprene was mainly from natural sources.
作者
朱波
王川
于广河
曾立民
黄晓锋
何凌燕
ZHU Bo;WANG Chuan;YU Guang-he;ZENG Li-min;HUANG Xiao-feng;HE Ling-yan(Key Laboratory for Urban Habitat Environmental Science and Technology,School of Environment and Energy,Shenzhen Graduate School,Peking University,Shenzhen 518055,China;Environmental Laboratory,Shenzhen Research Institute of Peking University,Shenzhen 518057,China;State Joint Key Laboratory of Environmental Simulation and Pollution Control,College of Environmental Science and Engineering,Peking University,Beijing 100871,China)
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2018年第2期418-425,共8页
China Environmental Science
基金
国家自然科学基金资助项目(U1301234)
国家科技支撑项目(2014BAC21B03)
深圳市科技计划项目(JCYJ20170412150626172/JCYJ20150828092818268)
作者简介
朱波(1990-),男,浙江兰溪人,硕士研究生,主要从事大气环境化学VOCs研究.已发表论文1篇.;责任作者,教授,huangxf@pku.edu.cn
