Seasonal concentration distribution of PM1.0 and PM2.5 and a risk assessment of bound trace metals in Harbin, China: Effect of the species distribution of heavy metals and heat supply.

ABSTRACT: To clarify the potential carcinogenic/noncarcinogenic risk posed by particulate matter (PM) in Harbin, a city in China with the typical heat supply, the concentrations of PM_1.0 and PM_2.5 were analyzed from Nov. 2014 to Nov. 2015, and the compositions of heavy metals and water-soluble ions (WSIs) were determined. The continuous heat supply from October to April led to serious air pollution in Harbin, thus leading to a significant increase in particle numbers (especially for PM_1.0). Specifically, coal combustion under heat supply conditions led to significant emissions of PM_1.0 and PM_2.5, especially heavy metals and secondary atmospheric pollutants, including SO₄^2-, NO₃^-, and NH₄

SUBMITTER: Wang K 

PROVIDER: S-EPMC7235082 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature