Urban street dust bound 24 potentially toxic metal/metalloids (PTMs) from Xining valley-city, NW China: Spatial occurrences, sources and health risks

Ecotoxicology and Environmental Safety
Xiaoping LiHongtao Yu

Abstract

Street dusts (SDs) were a significant tracer to understand the pollution status of potentially toxic metal/metalloids (PTMs) in local environment. In this study, a total of 157 SDs were collected in the valley-city of Xining, NW China, with the objective to systematically investigate the spatial occurrences, sources and health risk status of 24 PTMs bound in SDs. The basic datasets of pH and size-fractions showed that the SDs with PTMs were more alkaline and dominated with the coarse particle sizes between PM10-50, respectively. Results of concentration levels and spatial status of 24 PTMs processed with multi-statistical tools well established the sources identification in monitored local areas. It was suggested that the principal elements, Al, Fe, Si, K, Ca, Na, Mg, coupled with the trace elements Bi, Ga, Nb, Ni, Rb, Sr, Th, U, Y, Zr, As, Mn, Ti, V, Ce and La would be possiblely predominated by geogenic source or nature material, whereas contamination of Ba, Cu, Pb and Zn was clearly related to traffic-related sources. Peculiar associations among Cr and Co were possiblely enriched in SDs very close to the alloy industries. However, Sb and Sn differed from other observed PTMs, which appeared to derive predominantly from the co...Continue Reading

Citations

Jan 21, 2020·Environmental Science and Pollution Research International·Murnira Othman, Mohd Talib Latif
Oct 22, 2020·Scientific Reports·Kriangsak JenwitheesukKamonwan Jenwitheesuk
Jul 11, 2021·Journal of Environmental Management·Xuan ChangYing-Xia Li
Jan 18, 2022·Environmental Monitoring and Assessment·Arpita Roy, Tanushree Bhattacharya

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