Abstract：Objective To investigate the pollution characteristics of elements in atmospheric fine particles (PM2.5) in haze and non-haze episodes in urban areas of Yichang City, and to provide a scientific basis for estimating the PM2.5 health effects in local areas and developing environmental protection measures. Methods PM2.5 samples were collected by a sampler of medium-flow capacity from December 2016 to November 2017. The contents of elements, including beryllium, aluminum, chromium, manganese, nickel, arsenic, selenium, cadmium, stibium, mercury, thallium and lead were detected by inductively coupled plasma-mass spectrometry (ICP-MS), and then the differences in mass concentration of the twelve elements between haze and non-haze episodes were compared. Results The annual mean concentration of PM2.5 in urban areas of Yichang City was 56.4 μg/m3, showing a tendency of winter (94.0 μg/m3) > spring(50.6 μg/m3) > autumn (36.6 μg/m3) > summer(28.1 μg/m3). The pollution level of aluminum (141.2 ng/m3) was the most serious, followed by lead(37.8 ng/m3), manganese (25.3 ng/m3) and arsenic (5.29 ng/m3). The detected twelve elements accounted for 0.393% of PM2.5 mass concentration, and their proportion in PM2.5 mass concentration in non-haze days was significantly higher than that in haze days (0.555% vs. 0.232%). Conclusions The condition of PM2.5 pollution in the atmosphere in Yichang City has been improved, but heavy metal pollution such as arsenic, chromium and lead should be taken seriously.
杨财平, 明小燕, 杨小波. 宜昌城区霾与非霾天气下PM2.5中12种元素污染特征比较[J]. 实用预防医学, 2019, 26(2): 180-181.
YANG Cai-ping, MING Xiao-yan, YANG Xiao-bo. Comparison of characteristics of twelve elements in PM2.5 during haze and non-haze episodes in urban areas of Yichang City. , 2019, 26(2): 180-181.
2019, Vol. 26 
