上海市虹口区大气PM_(2.5)污染及重金属含量特征分析

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英文篇名：Characteristic analysis on PM_(2.5) pollution and heavy metal content in ambient air of Hongkou District of Shanghai 作者：许艳丹 ; 王静 ; 凌利民 ; 缪思维 ; 姚玉华 ; 陶春芳 ; 温学新 英文作者：XU Yan-dan;WANG Jing;LING Li-min;MIU Si-wei;YAO Yu-hua;TAO Chun-fang;WEN Xue-xin;Hongkou District Centre for Disease Control and Prevention,Shanghai; 关键词：PM_(2.5) ; 污染特征 ; 重金属 英文关键词：PM_(2.5);;characteristic of pollution;;heavy metals 中文刊名：上海预防医学 英文刊名：Shanghai Journal of Preventive Medicine 机构：上海市虹口区疾病预防控制中心; 出版日期：2019-04-16 16:04 出版单位：上海预防医学 年：2019 期：05 语种：中文; 页：87-90 页数：4 CN：31-1635/R ISSN：1004-9231 分类号：X513

摘要

【目的】了解上海市虹口区大气PM_(2.5)污染状况及其重金属含量的特征。【方法】2015—2016年,在上海市虹口区某建筑物楼顶采用滤膜称重法采集大气PM_(2.5),每次连续采样24 h,分析PM_(2.5)日平均质量浓度及其重金属含量特征。【结果】大气PM_(2.5)质量浓度范围为0.008～0.246 mg/m~3,平均值为0.052 mg/m~3,超标率为25.0%。PM_(2.5)质量浓度变化规律为冬季>春季>夏季>秋季,2016年低于2015年。大气PM_(2.5)中重金属含量平均值依次为钾>铁>钙>锌>铝>铅>锰>铜>钒。【结论】该采样点大气PM_(2.5)污染较严重,超标率较高。重金属浓度变化具有季节规律,冬春季节明显高于夏秋季。
        [Objective] To investigate the characteristics of the PM_(2.5) pollution and heavy metal content in the atmosphere of Hongkou District of Shanghai. [Methods] From 2015 to 2016,PM_(2.5) mass concentration was monitored by membrane gravimetric method on the roof of a building in Hongkou District of Shanghai.Air samples were continuously taken for 24 h each time thus to calculate the daily average mass concentration and the heavy metal content.The data obtained were used to analyze seasonal characteristics. [Results] The atmospheric PM_(2.5)mass concentration was in the range from 0.008 mg/m~3 to 0.246 mg/m~3,with the average being 0.052 mg/m~3 and the exceeding-limit ratio reaching 25%.The PM_(2.5)mass concentration in winter was the highest,with spring,summer and autumn in decreasing sequence,and was found to be higher in 2015 than in 2016.The average mass concentration of heavy metals in atmosphere were K>Fe>Ca>Zn>Al>Pb>Mn>Cu>V. [Conclusion] The PM_(2.5) pollution at the sampling spot in Hongkou District of Shanghai is quite serious with higher rate of exceeding the PM_(2.5) standard value.And its mass concentration variation has seasonal regular patterns,it is obviously higher in winter and spring than in summer and fall.

引文

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