程丽萍,李嘉欣,赵纲,李雪菲,王玮

• 1:石家庄市环境预测预报中心
• 2:石家庄市机动车排污管理中心
• 3:石家庄高新区环境监控中心

摘要(Abstract)：

2018年2月15日—2月21日春节假期,石家庄市出现了2月份以来污染最重、持续时间最长的一次空气污染过程。为探究重污染天气成因,采用位于石家庄市大气自动监测站的单颗粒气溶胶质谱仪(SPAMS),对春节期间的细颗粒物化学组成进行了分析,结合空气质量状况及气象条件等因素,对重污染天气的成因进行了推定。结果表明,在此次污染过程期间,地面持续处于低压幅合,边界层低,逆温现象严重,致使18日和19日的污染物浓度累积升高;同时根据SPAMS污染特征分析可知,春节期间发生的重污染过程中,燃煤和工业工艺源的累积,加剧了二次转化,且随着PM2.5浓度的攀升,细颗粒物中重金属和矿尘颗粒占比有一定的增加,二次无机源和烟花源的贡献变化较为突出。研究石家庄市春节期间大气污染物的组成及其成因,可为科学有效地制定大气环境调控策略提供技术参考。

关键词(KeyWords)： 大气污染防治工程;SPAMS;组分分析;重污染天气;石家庄市;春节

Abstract:

Keywords:

基金项目(Foundation): 2017年石家庄市第二批指导计划项目(171242403)

作者(Author): 程丽萍,李嘉欣,赵纲,李雪菲,王玮

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