Health risk assessment of heavy metal exposure to street dust in the zinc smelting district, Northeast of China

Zheng, Na; Liu, Jingshuang; Wang, Qichao; Liang, Zhongzhu

doi:10.1016/j.scitotenv.2009.10.075

Cited by 720 publications

(271 citation statements)

References 35 publications

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“…The other exposure parameters, such as the IngRs of the soil and dust and SA, were obtained from the literatures (Duan, 2012;Duan et al, 2011;USEPA, 1997USEPA, , 2002Zheng et al, 2010) and are listed in Table S1 (supplementary data). The penetration coefficient factor for water exposed in humans by dermal contact is listed in Table S2.…”

Section: Exposure Assessment Via Ingestion Dermal Contact and Inhalamentioning

confidence: 99%

Health risks from the exposure of children to As, Se, Pb and other heavy metals near the largest coking plant in China

Cao

Duan

Zhao

et al. 2014

Science of The Total Environment

323

109

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• The concentration of heavy metals and metalloids in environment and children's blood are observed around the Chinese largest coking plant.• The health risk assessments of children are analyzed.• Foods from the coking plant are heavily contaminated by As, Cr and Se.• Food Ingestion pathway contributes most to children's average daily dose for most heavy metals and metalloids.• Higher potentially non-carcinogenic and carcinogenic risks happen to the local children. a b s t r a c t a r t i c l e i n f o Coking influences environmental quality and poses high risks to human health as large amounts of heavy metals and metalloids are emitted into the environment from coal during the coking process. Health risks depend heavily on multi-pathway and element-specific exposures, which have, unfortunately, been rarely studied. In this study, children's health risks and exposure levels to As, Se, and heavy metals (Pb, Cd, Cr, Ni, Co, Zn, Cu, Mn, V and Sb) in the water, soil, dust, air and locally produced food were studied based on field sampling and questionnaire-based surveys around the largest coking area in China. Human blood samples were collected and analyzed to indicate the exposure levels. The non-carcinogenic risks to children mainly resulted from Cr, Mn, Pb, As and Sb, the levels of which were 3 to 10 times higher than the acceptable levels (1.0 × 10 −6 ). The carcinogenic risks to children were 30 to 200 times higher than the safe level (1.0 × 10 −6 -1.0 × 10 −4 ), which could be attributed to Cr, As and Ni pollution. The estimated risks mainly came from the pathway involving the ingestion of locally produced food, accounting for more than 85% in total for most elements. For As, the food ingestion and air inhalation exposure pathways both contributed approximately 50%, respectively. The high risks in this study highlight the attention paid to the health of children who live in the vicinity of coking activities and the importance of site-specific multi-pathway health risk assessments and food safety to protect potentially exposed children.

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Section: Exposure Assessment Via Ingestion Dermal Contact and Inhalamentioning

confidence: 99%

Health risks from the exposure of children to As, Se, Pb and other heavy metals near the largest coking plant in China

Cao

Duan

Zhao

et al. 2014

Science of The Total Environment

323

109

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“…Since the concentrations of most metals in the road dust samples followed an approximate log-normal distribution, the 95% UCL in this study was calculated using previously described methods (Zheng et al, 2010a;Zheng et al, 2010b). The other exposure factors for these models are shown in Table 2.…”

Section: Enrichment Factormentioning

confidence: 99%

“…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). Therefore, road dust can contribute significantly to environmental pollution in urban areas and is considered an indicator of heavy metal contamination from atmospheric deposition (Zheng et al, 2010a). Moreover, heavy metal elements in road dust are known to easily enter the human body through ingestion, inhalation, and dermal contact (Cook et al, 2005).…”

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

Liang

Zhou

2015

J. Geogr. Sci.

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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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“…Heavy metals concentrated in dust can be easily transferred into the human body by inhalation, ingestion and dermal contact absorption (Glorennec et al 2012). They accumulate in the tissues and internal organs of the human body (Zheng et al 2010), affecting the central nervous system and acting as cofactors, initiators, or promoters of other diseases (Faiz et al 2009). Therefore, research on heavy metal contamination in dust is essential to understanding the possible change of urban environmental quality caused by intensive anthropogenic activities.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution, environmental risk and source of heavy metals in street dust from an industrial city in semi-arid area of China

Han

2017

Archives of Environmental Protection

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Environmental risks associated with Co, Cr, Cu, Mn, Ni, Pb, V and Zn in street dust collected from Baotou, a medium-sized industrial city in a semi-arid area of northwest China, were assessed by using enrichment factor and the potential ecological index. Their spatial distributions and sources in the dust were analyzed on the basis of geostatistical methods and multivariate statistical analysis, respectively. The results indicate that street dust in Baotou has elevated heavy metal concentrations, especially of Co, Cr, Cu, Pb and Zn. Co in the dust was signifi cantly enriched. Cr and Pb were from moderate to signifi cant enrichment. Cu and Zn were from minimal to moderate enrichment, whereas Mn, Ni and V in the dust were from defi cient to minimal enrichment. The ecological risk levels of Co and Pb in the dust were moderate to considerable and low to moderate, respectively, whereas those of other heavy metals studied in the dust presented low ecological risk. Different distribution patterns were found among the analyzed heavy metals. Three main sources of these heavy metals were identifi ed. Cr, Mn, Ni and V originated from nature and industrial activities. Cu, Pb and Zn derived mainly from traffi c sources, and Co was mainly from construction sources.

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Health risk assessment of heavy metal exposure to street dust in the zinc smelting district, Northeast of China

Cited by 720 publications

References 35 publications

Health risks from the exposure of children to As, Se, Pb and other heavy metals near the largest coking plant in China

Health risks from the exposure of children to As, Se, Pb and other heavy metals near the largest coking plant in China

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

Spatial distribution, environmental risk and source of heavy metals in street dust from an industrial city in semi-arid area of China

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