首页|焦化污染区春季VOCs的污染特征及其控制策略

焦化污染区春季VOCs的污染特征及其控制策略

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在对介休焦化区和方山对照区春季大气挥发性有机化合物(VOCs)污染特征进行分析的基础上，利用等效丙烯浓度(PEC)法和最大增量反应活性(MIR)法量化了VOCs的臭氧生成潜势(OFP)，利用分数气溶胶生成系数(FAC)法和二次有机气溶胶(SOAP)法计算了VOCs的二次有机气溶胶生成潜势(SOAFP)，采用健康风险评价法对可能会威胁人体健康的 VOCs 组分进行了风险评估。在此基础上，结合熵值法和正定矩阵因子(PMF)源解析模型对VOCs的优先控制物种和优先控制污染源进行了判别。结果表明，介休焦化区VOCs污染严重，总VOCs(TVOCs)浓度是方山的 2。7 倍。介休焦化区VOCs组成具有明显的烷烃占比低而芳香烃和烯烃占比高的特点。介休的OFP、SOAFP与健康风险都远高于方山，分别是方山的3。0、8。9和8。8倍，对介休OFP、SOAFP 和健康风险影响最大的物种分别为乙烯、甲苯和苯，削减烯烃和芳香烃的排放是控制介休二次生成与健康风险的有效途径。焦化源(32。4%)是介休 VOCs 的主要来源，其次为汽油型尾气源(29。0%)和溶剂使用源(16。9%)，其中焦化源是介休一级控制污染物苯和乙烯的主要来源，贡献高达 74。1%和98。9%，汽油型尾气源(52。0%)和溶剂使用源(31。3%)是一级控制污染物甲苯的主要来源。
Pollution characteristics and control strategies of volatile organic compounds in coking pollution area in spring
This work analyzed the pollution characteristics of volatile organic compounds(VOCs)collected from Jiexiu(JX)and Fangshan(FS).Ozone formation potential(OFP)of VOCs was quantified by the propylene equivalent concentration(PEC)method and maximum incremental reactivity(MIR)method.The fractional aerosol coefficient(FAC)method and the secondary organic aerosol potential(SOAP)method were used to calculate the secondary organic aerosol formation potential(SOAFP)of VOCs.Meanwhile,health risks of toxic VOCs were evaluated via health risk assessment method.Furthermore,combined with the entropy method and positive matrix factorization(PMF)source apportionment model,the priority control species and the priority control pollution sources of VOCs were identified.The results showed that the concentration of total volatile organic compounds(TVOCs)in Jiexiu coking area was 2.7 times higher than that of Fangshan.The VOCs in Jiexiu were characterized by a low proportion of alkanes and high proportions of aromatics and alkenes.OFP,SOAFP,and health risks in Jiexiu were 3.0,8.9,and 8.8 times higher than those of Fangshan,respectively.Reduction of alkenes and aromatics emissions will be an effective way to control secondary pollutants and health risks in Jiexiu.Coking was the main source of VOCs(32.4%),followed by gasoline exhaust(29.0%)and solvent using(16.9%)in Jiexiu.Among,coking was also the main source of benzene and ethene,which were the primary pollutants controlled in Jiexiu,contributing up to 74.1%and 98.9%,respectively.While gasoline exhaust(52.0%)and solvent using(31.3%)were the main sources of the primary controlled pollutant toluene.

volatile organic compoundscoking pollutionentropy evaluation methodsecondary generationhealth risksource appointment

李宏艳、张琰茹、付国、黄时丹、李宏宇、崔阳、高雪莹、何秋生、白京霭、张国忠、温彪

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太原科技大学环境与资源学院,山西 太原 030024

兰州大学资源环境学院,甘肃省环境污染预警与控制重点实验室,甘肃 兰州 730000

澳大利亚国立大学芬纳环境与社会学院,澳大利亚 堪培拉 2600

生态环境部环境发展中心,国家环境分析测试中心,北京 100029

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VOCs 焦化污染 熵值法 二次生成 健康风险 源解析

国家自然科学基金资助项目国家自然科学基金资助项目山西省基础研究计划项目山西省基础研究计划项目太原科技大学教学改革创新项目

220761354150154320210302124474202103021223300XJ2021032

2024

中国环境科学
中国环境科学学会

中国环境科学

CSTPCDCHSSCD北大核心
影响因子：2.174
ISSN：1000-6923
年,卷(期)：2024.44(3)
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