Influence of population density on the concentration and speciation of metals in the soil and street dust from urban areas

被引：130

作者：

Acosta, J. A. ^{[1
]}

Gabarron, M. ^{[1
]}

Faz, A. ^{[1
]}

Martinez-Martinez, S. ^{[1
]}

Zornoza, R. ^{[1
]}

Arocena, J. M. ^{[2
]}

机构：

[1] Univ Politecn Cartagena, Sustainable Use Management & Reclamat Soil & Wate, ETSIA, Cartagena 30230, Spain

[2] Univ No British Columbia, Environm Sci Program, Prince George, BC V2N 4Z9, Canada

来源：

CHEMOSPHERE | 2015年 / 134卷

关键词：

Urban soil; Street dust; Population density; Heavy metals; Chemical speciation; HEAVY-METALS; SEQUENTIAL EXTRACTION; RISK-ASSESSMENT; TRACE-METALS; HEALTH-RISK; ROAD DUST; CONTAMINATION; ZINC; COPPER; CITY;

D O I：

10.1016/j.chemosphere.2015.04.038

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Street dust and soil from high, medium and low populated cities and natural area were analysed for selected physical-chemical properties, total and chemical speciation of Zn, Pb, Cu, Cr, Cd, Co, Ni to understand the influence of human activities on metal accumulation and mobility in the environment. The pH, salinity, carbonates and organic carbon contents were similar between soil and dust from the same city. Population density increases dust/soil salinity but has no influence on metals concentrations in soils. Increases in metal concentrations with population density were observed in dusts. Cu, Zn, Pb, Cr can be mobilized more easily from dust compared to the soil. In addition, population density increase the percentage of Pb and Zn associated to reducible and carbonate phase in the dust. The behaviour of metals except Cd in soil is mainly affected by physico-chemical properties, while total metal influenced the speciation except Cr and Ni in dusts. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：328 / 337

页数：10

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