Concentrations, Speciation, and Bioavailability of Heavy Metals in Street Dust as well as Relationships with Physiochemcal Properties: A Case Study of Jinan City in East China
- 29 June 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Environmental Science and Pollution Research
- Vol. 27 (28), 35724-35737
- https://doi.org/10.1007/s11356-020-09761-6
Abstract
A total of 77 street dust samples were collected from Jinan City in East China and were analyzed for the concentrations, speciation, bioavailability, and influencing factors of ten heavy metals. The results showed that the average concentrations of Ba, Co, Cr, Cu, Cd, Mn, Ni, Pb, Zn, and V in the street dust were 642.77, 8.24, 114.09, 87.71, 1.08, 517.04, 30.29, 80.32, 497.84, and 51.76 mg/kg, and the concentrations of Ba, Cr, Cu, Cd, Ni, Pb, and Zn exceeded the local soil element background values. In the street dust, Ba, Co, Cr, Mn, Ni, and V were mainly in the residual; Cu and Pb were controlled by the oxidizable; Cd mainly existed in the acid extractable; and Zn was dominated by the reducible. According to the ratios of the acid extractable to the sum of four forms, Cd (39.85%) presented a high environmental risk; Mn and Zn (24.29% and 27.78%) exhibited a medium risk; and V, Cu, Pb, Ba, Co, Ni, and Cr had no environmental risk. The order of mobility or potential risk of heavy metals was Cd ( 85.8%) > Zn (77.1%) > Cu (64.3%) > Pb (62.0%) > Mn (51.7%) > Ba ( 38.9%) > Co (31.2%) > Ni (30.1%) > V (25.8%) > Cr (23.1%), suggesting that Cd, Zn, Cu, Pb, and Mn presented relatively high movability and risk. The bioavailability order of heavy metals was Cd (82.7%) > Zn (63.6%) > Mn (40.4%) > Ni (20.4%) > Pb (11.7%) > Cu (11.1%) > V (7.8%) > Cr (3.7%) in the gastric phase and Cu (24.6%) > Cd (19.9%) > Mn (16.2%) > Ni (6.6%) > Pb (5.7%) > Zn (4.4%) > Cr (3.0%) > V (2.3%) in intestinal phase, implying that Cd, Zn, Mn, and Cu were highly bioavailable in the gastrointestinal environment, which coincided with the risk of speciation. The speciation of heavy metals in street dust had certain correlations with their bioavailability. The physiochemical properties of street dust had significant effects on the concentrations, speciation, and bioavailability of heavy metals in street dust. The simple, fast, and nondestructive magnetic measurements could be used as indicators of the concentrations, speciation, and bioavailability of heavy metals in street dust.Funding Information
- National Natural Science Foundation of China (41877516)
This publication has 82 references indexed in Scilit:
- A novel in situ method for sampling urban soil dust: Particle size distribution, trace metal concentrations, and stable lead isotopesEnvironmental Pollution, 2013
- Assessing Cd, Pb, Zn human bioaccessibility in smelter-contaminated agricultural topsoils (northern France)Environmental Geochemistry and Health, 2010
- Anthropogenic magnetic particles and heavy metals in the road dust: Magnetic identification and its implicationsAtmospheric Environment, 2010
- Assessment of heavy metals in sediments from a typical catchment of the Yangtze River, ChinaEnvironmental Monitoring and Assessment, 2010
- Contamination assessment of mercury and arsenic in roadway dust from Baoji, ChinaAtmospheric Environment, 2009
- Distribution of metals in soil particle size fractions and its implication to risk assessment of playgrounds in Murcia City (Spain)Geoderma, 2009
- Potentially toxic metal contamination of urban soils and roadside dust in Shanghai, ChinaEnvironmental Pollution, 2008
- THE PRACTICE OF EXPOSURE ASSESSMENT: A STATE-OF-THE-ART REVIEWJournal of Toxicology and Environmental Health, Part B, 2000
- Estimation of Lead and Arsenic Bioavailability Using a Physiologically Based Extraction TestEnvironmental Science & Technology, 1996
- Sequential extraction procedure for the speciation of particulate trace metalsAnalytical Chemistry, 1979