Annual Characteristics, Source Analysis of PM1 -Bound Potentially Harmful Elements in the Eastern District of Chengdu, China

Archives of Environmental Contamination and Toxicology
Jinjin WangChengjiang Zhang

Abstract

Chengdu, a megacity in southwestern China, experiences severe air pollution; however, knowledge of the seasonal variation in mass concentration, extent of potentially harmful elements (PHEs) contamination, and sources caused by heavy metals remains lacking. This study adopted a weighting method to calculate the daily mass concentration of PM1 and used ICP-MS to determine PHE concentrations. Results indicated that PM1 mass concentration was in the range 5.44-105.91 μg/m3. Seasonal PM1 mass concentration could be arranged in the following order: winter > fall > spring > summer. The concentrations of PHEs in the PM1 sample mostly showed the same seasonal variation characteristics as mass concentration. The average concentration of each PHE decreased as follows: Cu (107.44) > Zn (81.52) > Pb (22.04) > As (8.17) > Sb (1.91) > Ni (1.87) > Cr(VI) (0.84) > Cd (0.40) > Tl (0.33) (ng/m3). Enrichment factor values varied markedly from mild to anomalous enrichment. Principal component analysis revealed mainly derived from the fossil fuel combustion (55.215%).

References

Nov 26, 2015·Ecotoxicology and Environmental Safety·Gülşen Yıldırım, Şerife Tokalıoğlu
Feb 5, 2016·Archives of Environmental Contamination and Toxicology·Mengqin ChenSanglan Ding
Feb 24, 2018·The Science of the Total Environment·Yanyun ZhangHaiyan Wang
Feb 27, 2018·Ecotoxicology and Environmental Safety·Manash GopeSrinivasan Balachandran
Oct 7, 2018·Environment International·Kejia HuJiaguo Qi

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