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The concentration of heavy metals in PM2.5 and its ecological risk assessment in an industrial zone of Shanghai / 上海预防医学
Article in Chinese | WPRIM | ID: wpr-923970
Responsible library: WPRO
ABSTRACT
Objective To study the composition and concentration of atmospheric particulate pollutants in four seasons in the industrial and clean living areas, and to provide a scientific basis for the strategy of controlling industrial pollution and atmospheric environment. Methods An industrial area dominated by the automobile industry in Shanghai and a relatively clean living area were selected. Samples were collected simultaneously in both areas and continuously for 7 days in the middle of each season. The composition and concentration of PM2.5 were determined, and the ecological risk of heavy metals in PM2.5 was evaluated by the potential ecological risk index method. Results We found PM2.5 concentration was associated with seasonal changes. The PM2.5 concentration in living areas was the highest in winter, followed by spring, and the lowest in summer. The PM2.5 concentration in industrial areas was the highest in spring, followed by winter, and the lowest in summer. The heavy metals in PM2.5 were the same, including Al, Cr, Mn, Ni, As, Cd, Hg and Pb. The content of Cr, Cd and Pb in PM2.5 in the industrial area is significantly higher than that in the living area. The potential ecological hazard coefficient of PM2.5 heavy metal Cd in the industrial zone was the highest, up to 189.47, and it was the main component of the total potential ecological hazard index of heavy metals. According to the total potential risk grade of heavy metals, the heavy metal Cd in the industrial area had different degrees of ecological harm with seasonal changes. The ecological harm degree of heavy metal Cd was the highest in winter, high in spring and autumn, and low in summer. Conclusion Although the concentration of PM2.5 in the industrial area is not higher than that in the living area, the content of Cr, Cd and Pb in the PM2.5 in the industrial area is significantly higher than that in the living area. The concentration of PM2.5 in the industrial area is mainly related to seasons, industrial production and human factors. The potential ecological harm coefficient of heavy metal Cd in PM2.5 is the highest in comparison with other heavy metals such as Cr, Hg and Pb, and it is the main component of the total potential ecological harm index ofheavy metals.

Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Shanghai Journal of Preventive Medicine Year: 2022 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Shanghai Journal of Preventive Medicine Year: 2022 Type: Article