Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (11): 1667-1672.DOI: 10.12068/j.issn.1005-3026.2018.11.029

• Resources & Civil Engineering • Previous Articles    

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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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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