东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (11): 1667-1672.DOI: 10.12068/j.issn.1005-3026.2018.11.029

• 资源与土木工程 • 上一篇    

秦皇岛冬季典型污染时段PM2.5中重金属和PAHs的污染特征

周秀艳1， 李娜1， 刘明华2， 王申博1   

  1. (1. 东北大学秦皇岛分校 资源与材料学院， 河北 秦皇岛066004; 2. 秦皇岛市环境保护监测站， 河北 秦皇岛066000)
  • 收稿日期:2017-08-02 修回日期:2017-08-02 出版日期:2018-11-15 发布日期:2018-11-09
  • 通讯作者: 周秀艳
  • 作者简介:周秀艳(1969-)，女，辽宁阜新人，东北大学秦皇岛分校教授.冯明杰(1971-)， 男， 河南禹州人， 东北大学副教授; 王恩刚(1962-)， 男， 辽宁沈阳人， 东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(41501514)； 秦皇岛市科技支撑项目(201402B038).

Characteristics of Heavy Metal and PAHs in PM2.5 During Winter Pollution in Qinhuangdao

ZHOU Xiu-yan1， LI Na1， LIU Ming-hua2， WANG Shen-bo1   

  1. 1. School of Resource & Materials， Northeastern University at Qinhuangdao， Qinhuangdao 066004， China; 2. Environmental Protection Monitoring Station Qinhuangdao， Qinhuangdao 066000， China.
  • Received:2017-08-02 Revised:2017-08-02 Online:2018-11-15 Published:2018-11-09
  • Contact: ZHOU Xiu-yan
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摘要： 为了探究近年来秦皇岛市大气中PM2.5污染特征和影响因素，通过采集冬季重污染时段城区和开发区PM2.5样品，使用等离子体发射光谱仪和气相色谱-质谱仪，分别测定城区样品中6种元素(Cu，Pb，Zn，Cr，Ni，Cd)和PAHs.结果表明，秦皇岛城区PM2.5日平均质量浓度186μg/m3，开发区平均质量浓度为118.88μg/m3，城区PM2.5中各重金属元素的浓度水平排序为Zn＞Pb＞Ni＞Cr＞Cu＞Cd，其中Cd为强-极强污染，Pb为中-强污染，Zn属于中等污染，Ni，Cu，Cr等其他元素基本无污染.PM2.5中定性的检测到奈(Nap)、菲(Phe)、荧蒽(Fla)、芘(Pyr)、苯并(k)荧蒽(BkF)等单体.PM2.5日浓度与风速具有显著的负相关性，与相对湿度呈正相关性.

关键词: PM2.5, 污染特征, 重金属, 多环芳烃, 气象条件

Abstract: In order to explore the pollution characteristics and influencing factors of PM2.5 in Qinhuangdao in recent years， the PM2.5 samples from urban and development zones of Qinhuangdao during heavy pollution in winter were collected and analyzed. The quantities of 6 heavy metal elements(Cu， Pb， Zn， Cr， Ni， Cd)and polycyclic aromatic hydrocarbons(PAHs)in urban samples were determined by plasma emission spectrometer and gas chromatography-mass spectrometry. The results show that the average daily mass concentration of PM2.5 in Qinhuangdao urban is 186μg/m3， and the average concentration in the development area is 118.88μg/m3. The sequence of concentrations of heavy metals in urban PM2.5 are Zn > Pb > Ni > Cr > Cu > Cd. Among them， Cd is strong to strong pollution， Pb is medium to strong pollution， and Zn is medium pollution， other elements such as Ni， Cu， Cr are basically pollution-free. The monomers of PAHs， such as Naphthalene(Nap)， phenanthrene(Phe)， fluoranthene(Fla)， pyrene(Pyr)， benzo(k)fluoranthene(BkF)and so on， are qualitatively detected in these samples of PM2.5. The daily concentration of PM2.5 is negatively correlated with wind speed and positively correlated with relative humidity.

Key words: PM2.5, pollution characteristics, heavy metal, polycyclic aromatic hydrocarbons(PAHs), meteorological conditions

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