Pollution and health risk of potentially toxic metals in urban road dust in Nanjing, a mega-city of China

Liu, Enfeng; Yan, Ting Zhi; Birch, G.F.; Zhu, Yuanrong

doi:10.1016/j.scitotenv.2014.01.055

Cited by 267 publications

(103 citation statements)

References 48 publications

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“…These results indicated that the road dust in residential areas of Bayan Obo contains considerably higher concentrations of Cd, Co, and Mn, and lower levels of in Cu, Zn and Ni compared with other cities, except for Ni in Hangzhou (Zhang and Wang, 2009). The concentration of Cr was close to that measured in Shanghai (Shi et al, 2008), Nanjing (Liu et al, 2014), and Baoji , where urban environments were heavily affected by human activities. Additionally, the Pb content in Bayan Obo, which exceeded that measured in Urumqi (Wei et al, 2009) and Nanjing (Liu et al, 2014), was still detected at a relatively low level compared with other industrial and developed cities.…”

Section: Heavy Metals Contents In Road Dustsupporting

confidence: 77%

“…The concentration of Cr was close to that measured in Shanghai (Shi et al, 2008), Nanjing (Liu et al, 2014), and Baoji , where urban environments were heavily affected by human activities. Additionally, the Pb content in Bayan Obo, which exceeded that measured in Urumqi (Wei et al, 2009) and Nanjing (Liu et al, 2014), was still detected at a relatively low level compared with other industrial and developed cities. …”

Section: Heavy Metals Contents In Road Dustsupporting

confidence: 77%

“…Road dust is comprised of solid particles which accumulate on impervious, hard road surfaces, such as cement and sidewalks in urban areas (Liu et al, 2014). Road dust plays an active role as a "sink and source" of pollutants due to enhanced levels of metals and other pollutants and frequent interactions of dust with the atmosphere and other mediums through resuspension and deposition of dust particles (Moreno et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Contamination and health risk assessment of heavy metals in road dust in Bayan Obo Mining Region in Inner Mongolia, North China

2015

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Abstract:The objective of this study was to investigate the concentration and spatial distribution patterns of 9 potentially toxic heavy metal elements (As, Cd, Co, Cr, Pb, Cu, Zn, Mn, and Ni) in road dust in the Bayan Obo Mining Region in Inner Mongolia, China. Contamination levels were evaluated using the geoaccumulation index and the enrichment factor. Human health risks for each heavy metal element were assessed using a human exposure model. Results showed that the dust contained significantly elevated heavy metal elements concentrations compared with the background soil. The spatial distribution pattern of all tested metals except for As coincided with the locations of industrial areas while the spatial distribution of As was associated with domestic sources. The contamination evaluation indicated that Cd, Pb, and Mn in road dust mainly originated from anthropogenic sources with a rating of "heavily polluted" to "extremely polluted," whereas the remaining metals originated from both natural and anthropogenic sources with a level of "moderately polluted". The non-cancer health risk assessment showed that ingestion was the primary exposure route for all metals in the road dust and that Mn, Cr, Pb, and As were the main contributors to non-cancer risks in both children and adults. Higher HI values were calculated for children (HI=1.89), indicating that children will likely experience higher health risks compared with adults (HI=0.23). The cancer risk assessment showed that Cr was the main contributor, with cancer risks which were 2-3 orders of magnitude higher than those for other metals. Taken in concert, the non-cancer risks posed by all studied heavy metal elements and the cancer risks posed by As, Co, Cr, Cd, and Ni to both children and adults in Bayan Obo Mining Region fell within the acceptable range.

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Section: Heavy Metals Contents In Road Dustsupporting

confidence: 77%

Section: Heavy Metals Contents In Road Dustsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

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Contamination and health risk assessment of heavy metals in road dust in Bayan Obo Mining Region in Inner Mongolia, North China

2015

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“…It is related to particulate content in the atmosphere through resuspension into and re-deposition from the atmosphere and it is chemically similar, in some respects, to the primary portion of atmospheric particulate [6,7]. Therefore, road dust is a valuable medium for characterizing urban environmental quality [8] and its chemical composition is an indicator for environmental pollution [9].…”

Section: Introductionmentioning

confidence: 99%

“…Road dust is a main reservoir of metals in urban environment from surrounding areas [8,10]. Metals in road dust result from traffic emissions (exhausts, oil lubricants, vehicle wear, brake lining, corroding building-material asphalts, automobile parts and yellow road paint degradation), industrial emission (smelters, incinerators, foundries and steel plants), as well as dry and wet deposition of atmospheric particulates [3,11,12].…”

Section: Introductionmentioning

confidence: 99%

Pollution Assessment and Health Risk Implication of Human Exposure to Heavy Metals in Road Dusts from Different Functional Areas in Jeddah, Saudi Arabia

Shabbaj¹,

Alghamdi²,

Shamy³

et al. 2017

Preprint

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Data dealing with the assessment of heavy metal pollution in road dusts in Jeddah, Saudi Arabia and its implication to human health risk of human exposure to heavy metals, are scarce. Road dusts were collected from five different functional areas (traffic areas TA, parking areas PA, residential areas RA, mixed residential commercial areas MCRA and suburban areas SA) in Jeddah and one in rural area (RUA) in Hada Al Sham. We aimed to measure the pollution levels of heavy metals and estimate their health risk of human exposure applying risk assessment models described by USEPA. Using geo-accumulation index (Igeo), the pollution level of heavy metals in urban road dusts was in the following order Cd > As > Pb > Zn > Cu > Ni > Cr > V > Mn > Co > Fe. Urban road dust was found to be moderately to heavily contaminated with As, Pb and Zn, and heavily to extremely contaminated with Cd. Calculation of enrichment factor (EF) revealed that heavy metals in TA had the highest values compared to that of the other functional areas. Cd, As, Pb, Zn and Cu were severely enriched, while Mn, V, Co, Ni and Cr were moderately enriched. Fe was consider as a natural element and consequently excluded. The concentrations of heavy metals in road dusts of functional areas were in the following order: TA > PA > MCRA > SA > RA > RUA. The study revealed that both children and adults in all studied areas having health quotient (HQ) < 1 are at negligible non-carcinogenic risk. The only exception was for children exposed to As in TA. They had an ingestion health quotient (HQing) 1.18 and a health index (HI) 1.19. The most prominent exposure route was ingestion. The cancer risk for children and adults from exposure to Pb, Cd, Co, Ni, and Cr was found to be negligible (< 1 x 10 -6 ).

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Insights and Issues of Trace Elements Found in Street and Road Dusts

et al. 2018

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Pollution and health risk of potentially toxic metals in urban road dust in Nanjing, a mega-city of China

Cited by 267 publications

References 48 publications

Contamination and health risk assessment of heavy metals in road dust in Bayan Obo Mining Region in Inner Mongolia, North China

Contamination and health risk assessment of heavy metals in road dust in Bayan Obo Mining Region in Inner Mongolia, North China

Pollution Assessment and Health Risk Implication of Human Exposure to Heavy Metals in Road Dusts from Different Functional Areas in Jeddah, Saudi Arabia

Insights and Issues of Trace Elements Found in Street and Road Dusts

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