Characterisation and Risk Assessment of Metal Contaminants in the Dust Fall in the Vicinity of a Construction Waste Dump in Beijing

Lili Wang, Gaofeng Wu, Tianyue Zhang, Wenkai Lei, Xinyu Wang, Mi Wang, Dongyang Zheng and Wenji Zhao ()
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Lili Wang: College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
Gaofeng Wu: College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
Tianyue Zhang: College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
Wenkai Lei: College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
Xinyu Wang: College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
Mi Wang: College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
Dongyang Zheng: College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
Wenji Zhao: College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China

IJERPH, 2022, vol. 19, issue 20, 1-14

Abstract: In this study, a large construction waste dump in Beijing, China, was used as the study area. Nineteen effective atmospheric dust samples were collected. The mass fractions of 14 metal elements (Ca, Fe, Al, Mg, Mn, Zn, Cr, Cu, V, Pb, Ni, As, Co, and Cd) were determined for the samples using ICP-MS. The pollutants and the potential ecological risk levels of 10 different heavy metals were evaluated using the enrichment factor, geo-accumulation index, and a potential ecological risk assessment method. The results showed that the Ca, Fe, Al, and Mg contents in the dust fall were considerably high and accounted for 98.81% of the total mass of the analysed metals. Cd and Zn were the main metal contaminants in the dust fall in the vicinity of the construction waste dump, followed by Cu and Mn. The Cd, Zn, Cu, and Mn contents in the construction waste had a significant impact on atmospheric pollution within 250 m of the dump. Moreover, Cd had the largest contribution to the comprehensive ecological risk posed by the heavy metals in the dust fall and was determined to be the primary ecological risk factor in the atmospheric environment in the vicinity of the construction waste dump.

Keywords: construction waste; dust fall; heavy metals; geo-accumulation index; potential ecological risk index (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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