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Pollution Characteristics and Health Risk Assessment of Airborne Heavy Metals Collected from Beijing Bus Stations.

Zheng X, Zhao W, Yan X, Shu T, Xiong Q, Chen F - Int J Environ Res Public Health (2015)

Bottom Line: The results indicate that dust samples have elevated metal concentrations, especially for Cd, Cu, Pb and Zn.Cd, Cr, Cu, Mo, Pb and Zn reach contaminated level and have similar spatial patterns with hotspots distributed within the Fifth Ring Road.While the hot spot areas of Co and V are always out of the Fifth Ring Road.

View Article: PubMed Central - PubMed

Affiliation: Department of Cartography and Geographic Information System, College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China. zhengxx115@163.com.

ABSTRACT
Airborne dust, which contains high levels of toxic metals, is recognized as one of the most harmful environment component. The purpose of this study was to evaluate heavy metals pollution in dustfall from bus stations in Beijing, and to perform a risk assessment analysis for adult passengers. The concentrations of Cd, Co, Cr, Cu, Mo, Ni, Pb, V and Zn were determined by inductively coupled plasma mass spectroscopy (ICP-MS). The spatial distribution, pollution level and potential health risk of heavy metals were analyzed by Geographic Information System (GIS) mapping technology, geo-accumulation index and health risk assessment model, respectively. The results indicate that dust samples have elevated metal concentrations, especially for Cd, Cu, Pb and Zn. The nine metals can be divided into two categories in terms of spatial distribution and pollution level. Cd, Cr, Cu, Mo, Pb and Zn reach contaminated level and have similar spatial patterns with hotspots distributed within the Fifth Ring Road. While the hot spot areas of Co and V are always out of the Fifth Ring Road. Health risk assessment shows that both carcinogenic and non-carcinogenic risks of selected metals were within the safe range.

No MeSH data available.


Related in: MedlinePlus

The Igeo of heavy metals of dustfall.
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ijerph-12-09658-f002: The Igeo of heavy metals of dustfall.

Mentions: The Igeo values for the heavy metals of dustfall selected from bus stations were presented in Figure 2. The average Igeo values for heavy metals were 4.42 for Cd, 1.13 for Cr, −1.52 for Co, 2.40 for Cu, 0.28 for Mo, 0.34 for Ni, 1.45 for Pb, −0.58 for V, and 1.69 for Zn respectively. The maximum Igeo values for Cr and V are less than zero, which are both ranked as an “uncontaminated” level. The Igeo values for the other seven metals such as Cd, Cu, Zn, Pb, Co, Ni and Mo are all greater than 0, indicating that dustfall in the study areas is polluted by these seven metals with varying degrees. Among them, Cd is ranked as “heavily to extremely contaminated” level. According to the previous research [38], the high Cd concentration in urban was attribute to heavily population density and their complicated activities. Cu is ranked as “moderately contaminated to heavily contaminated” level. Based on the published research [38,41], the Cu concentration exist a considerable increasing tendency, which also need more attention. The dusts are scarcely contaminated by Mo and Ni, and are moderately contaminated by Co and Pb.


Pollution Characteristics and Health Risk Assessment of Airborne Heavy Metals Collected from Beijing Bus Stations.

Zheng X, Zhao W, Yan X, Shu T, Xiong Q, Chen F - Int J Environ Res Public Health (2015)

The Igeo of heavy metals of dustfall.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4555304&req=5

ijerph-12-09658-f002: The Igeo of heavy metals of dustfall.
Mentions: The Igeo values for the heavy metals of dustfall selected from bus stations were presented in Figure 2. The average Igeo values for heavy metals were 4.42 for Cd, 1.13 for Cr, −1.52 for Co, 2.40 for Cu, 0.28 for Mo, 0.34 for Ni, 1.45 for Pb, −0.58 for V, and 1.69 for Zn respectively. The maximum Igeo values for Cr and V are less than zero, which are both ranked as an “uncontaminated” level. The Igeo values for the other seven metals such as Cd, Cu, Zn, Pb, Co, Ni and Mo are all greater than 0, indicating that dustfall in the study areas is polluted by these seven metals with varying degrees. Among them, Cd is ranked as “heavily to extremely contaminated” level. According to the previous research [38], the high Cd concentration in urban was attribute to heavily population density and their complicated activities. Cu is ranked as “moderately contaminated to heavily contaminated” level. Based on the published research [38,41], the Cu concentration exist a considerable increasing tendency, which also need more attention. The dusts are scarcely contaminated by Mo and Ni, and are moderately contaminated by Co and Pb.

Bottom Line: The results indicate that dust samples have elevated metal concentrations, especially for Cd, Cu, Pb and Zn.Cd, Cr, Cu, Mo, Pb and Zn reach contaminated level and have similar spatial patterns with hotspots distributed within the Fifth Ring Road.While the hot spot areas of Co and V are always out of the Fifth Ring Road.

View Article: PubMed Central - PubMed

Affiliation: Department of Cartography and Geographic Information System, College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China. zhengxx115@163.com.

ABSTRACT
Airborne dust, which contains high levels of toxic metals, is recognized as one of the most harmful environment component. The purpose of this study was to evaluate heavy metals pollution in dustfall from bus stations in Beijing, and to perform a risk assessment analysis for adult passengers. The concentrations of Cd, Co, Cr, Cu, Mo, Ni, Pb, V and Zn were determined by inductively coupled plasma mass spectroscopy (ICP-MS). The spatial distribution, pollution level and potential health risk of heavy metals were analyzed by Geographic Information System (GIS) mapping technology, geo-accumulation index and health risk assessment model, respectively. The results indicate that dust samples have elevated metal concentrations, especially for Cd, Cu, Pb and Zn. The nine metals can be divided into two categories in terms of spatial distribution and pollution level. Cd, Cr, Cu, Mo, Pb and Zn reach contaminated level and have similar spatial patterns with hotspots distributed within the Fifth Ring Road. While the hot spot areas of Co and V are always out of the Fifth Ring Road. Health risk assessment shows that both carcinogenic and non-carcinogenic risks of selected metals were within the safe range.

No MeSH data available.


Related in: MedlinePlus