PDF
Full
Outline
To understand the air pollution level, to analyze the source apportionment of metals and metalloids in PM2.5 and to evaluate its health risk in the city of Hefei.
The concentration of 10 elements (As,Cd,Cr,Ni,Pb, Mn,Se, Al and Sb)in PM2.5 samples was collected in Hefei city from January 2018 to December 2022, which was used to analyze the pollution level and source apportionment was determined by inductively coupled plasma mass spectrometer(ICP-MS). Correlation analysis, principal components analysis and cluster analysis were used to analyze the sources of metals and metalloids. A health risk assessment model was used to evaluate the health risk of population of 4 carcinogenic elements(As,Cd,Cr,Ni) and 5 non-carcinogenicelements(Pb,Mn,Se,Al,Sb).
The total average concentration of 10 elements in PM2.5 was in an order of Al>Pb>Mn>As>Se>Sb>Ni>Cr>Cd>Tl and presented an obvious seasonal variation characteristic, higher in winter and spring, lower in summer and autumn.The mixed sources of coal burning, traffic and industry, dust and industrial emissions sources were the main sources of metals and metalloids in ambient PM2.5 in Hefei.The respiratory pathway exposures of these elements assessed by annual excess risk were between 1.67×10-7and 4.22×10-15, which were below the acceptable risk level of population (10-6).
The main sources of metals in Hefei are mixed sources, soil dust sources and industrial sources. The respiratory pathway exposures of most of the elements assessed by annual excess risk are below the acceptable risk level of population.
PDF
46
20
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
