摘要
挥发性有机物(VOCs)导致了车内空气污染,对驾乘人员健康危害大。文章为确定车内VOCs污染的衰减规律,对103辆车内VOCs污染进行调查与衰减曲线分析。结果发现车内苯、甲苯、乙苯、二甲苯、苯乙烯、乙酸正丁酯、十一烷与总VOCs浓度最大值依次为138.9、376.4、125.1、307.9、42.7、56.7、99.6与2435.7μg/m^3;车内VOCs浓度随车龄的增大而逐步衰减,最优衰减曲线是一元三次方程;通过求解方程,可知车内苯、甲苯、乙苯、二甲苯、苯乙烯、乙酸正丁酯、十一烷与总VOCs的衰减时间分别是3.9、4.3、3.6、4.2、3.5、4.9、5.2与3.9 a,说明车内空气VOCs污染的衰减期很漫长。
Volatile organic compounds(VOCs)led to vehicle indoor air pollution,which was harmful to the health of occupants.In order to determine the attenuation law of VOCs pollution in vehicles,the attenuation curve and concentration levels of VOCs pollution in 103 vehicles were analysed.Results show that the maximum values of vehicle indoor benzene,toluene,ethyl benzene,xylenes,styrene,butyl acetate,undecane and total VOCs are 138.9,376.4,125.1,307.9,42.7,56.7,99.6 and2435.7μg/m^3 respectively;the VOCs levels is attenuating gradually with vehicle age,and the optimum function relationship between the VOCs concentrations(y)and vehicle age(x)is the univariate cubic equation;when y=0,xbenzene,xtoluene,xethyl benzene,xxylenes,xstyrene,xbutyl acetate,xundecaneand xtotal VOCsare 3.9,4.3,3.6,4.2,3.5,4.9,5.2 and 3.9 years respectively.So the attenuation time of airborne VOCs pollution in vehicles is very long.
作者
郭兵
程赫明
陈小开
GUO Bing;CHENG Heming;CHEN Xiaokai(College of Civil Engineering,Kunming University of Science and Technology,Kunming 650500,China;National Engineering Research Center of Waste Resource Recovery,Kunming 650093,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2019年第S02期162-168,共7页
Environmental Science & Technology
基金
国家自然科学基金(51568026).
关键词
挥发性有机物
苯
甲苯
空气污染
车内空气
衰减
volatile organic compounds
benzene
toluene
air pollution
vehicle indoor air
attenuation
作者简介
郭兵(1994-),男,硕士研究生,主要从事室内环境品质研究,(电子信箱)2660703614@qq.com;通讯作者:陈小开,(电子信箱)ccxk@qq.com。
