Metal Element Detection and Carcinogenicity Risk Assessment of PM2.5 Samples.

The objective of this study is to conduct metal element analysis and carcinogenicity risk assessment of PM2.5 samples from Shenzhen and Taiyuan. PM2.5 samples were collected in Shenzhen and Taiyuan during the year of 2017~2018. Ten heavy metal elements were detected by ICP-MS spectrometry. Health risk was assessed using the recommended United States Environmental Protection Agency model. Metal elements found in PM2.5 samples from Shenzhen included (in decreasing order of concentration): Al, Pb, Mn, Cr, Cu, V, As, Ni, Cd, and Co. Metal elements found in Taiyuan included (in decreasing order of concentration) Al, Mn, Pb, Cr, Cu, As, Ni, V, Cd, and Co. There were significant differences in Pb, Mn, Al, As, and Ni levels between Shenzhen and Taiyuan (P 10(-4) ), followed by As, Ni, and Cd (10(-6) ~10(-4) ). Pb had the lowest risk (<10(-6) ). The results indicated that some of the metal elements in PM2.5 samples from Shenzhen and Taiyuan have carcinogenicity risk, further research and measures for prevention and control should be considered. This article is protected by copyright. All rights reserved.