Assessment of metals pollution and health risk in dust from nursery schools in Xi’an, China

Li, Xinwei; Zhang, Xiaolan; Li, Loretta Y.; Chen, Hao

doi:10.1016/j.envres.2013.11.007

Cited by 273 publications

(126 citation statements)

References 46 publications

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“…Compared with metal concentrations in street dusts from other Chinese cities, the road dusts from the plastic recycling area had relatively low to moderate levels of heavy metals. This suggests that higher levels of heavy metals are ubiquitous in urban dusts, as a result of a wide range of industrial and traffic sources (Lei et al 2012;Lu et al 2014). Concentrations of As, Zn, Cd, and Cu in our road dusts also were relatively low compared with road dusts from e-waste recycling sites (Leung et al 2008;Xu et al 2015).…”

Section: Contamination Levels Of Metalsmentioning

confidence: 77%

Polybrominated diphenyl ethers (PBDEs) and heavy metals in road dusts from a plastic waste recycling area in north China: implications for human health

Tang

Huang

Yang

et al. 2015

Environ Sci Pollut Res

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Road dusts were collected from an area where intense mechanical recycling of plastic wastes occurs in Wen'an, north China. These dusts were investigated for polybrominated diphenyl ethers (PBDEs) and heavy metals contamination to assess the health risk related to these components. Decabromodiphenyl ether (BDE-209) and Σ 21 PBDE concentrations in these dusts ranged from 2.67 to 10, 424 ng g −1 and from 3.23 to 10,640 ng g −1 , respectively.These PBDE concentrations were comparable to those observed in road dust from e-waste recycling areas but were 1-2 orders of magnitude higher than concentrations in outdoor or road dusts from other areas. This indicates that road dusts in the study area have high levels of PBDE pollution. BDE-209 was the predominant congener, accounting for 86.3 % of the total PBDE content in dusts. Thus, commercial deca-BDE products were the dominant source. The average concentrations of As, Cd, Cr, Cu, Hg, Pb, Sb, and Zn in these same dust samples were 10. 1, 0.495, 112, 54.7, 0.150, 71.8, 10.6, and 186 mg kg, respectively. The geoaccumulation index suggests that road dusts in this area are moderately to heavily polluted with Cd, Hg, and Sb. This study shows that plastic waste processing is a major source of toxic pollutants in road dusts in this area. Although the health risk from exposure to dust PBDEs was low, levels of some heavy metals in this dust exceeded acceptable risk levels for children and are of great concern.

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Section: Contamination Levels Of Metalsmentioning

confidence: 77%

Polybrominated diphenyl ethers (PBDEs) and heavy metals in road dusts from a plastic waste recycling area in north China: implications for human health

Tang

Huang

Yang

et al. 2015

Environ Sci Pollut Res

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“…Considering additionally that the variability of loadings comes mainly from the differences between schools, this finding allows for performing the sampling in a unique location in the classroom. Thus, combining settled dust samples from various locations of a classroom, as described by Lu et al [26], is not required.…”

Section: Influence Of Sampling Location Within the Classroommentioning

confidence: 99%

Exposure Assessment of Allergens and Metals in Settled Dust in French Nursery and Elementary Schools

et al. 2015

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Abstract:The aim of this study was to characterise the contamination in settled dust in French classrooms and to provide an overview of the influencing factors of dust contamination. Cat, dog and dust mite allergens and metals were measured in 51 classrooms at 17 schools. The concentrations of pet allergens in settled dust were generally low (mean value of 0.1 µg·g −1 ), with carpeted and rug-covered floors presenting higher dust and cat allergen concentrations. The highest metal loadings in dust were observed for manganese (Mn) and copper (Cu), while the lead (Pb) loadings were lower (16 ± 19 µg·m −2) and fell below the French guideline. Higher metal leachability was found for cadmium (Cd), Cu, Pb and strontium (Sr) at values of approximately 80%, which suggest that, in cases of dust ingestion by children, a large proportion should be assimilated through the gastro-intestinal tract. The intra-classroom and intra-school variabilities of the metal concentrations in settled dust were lower than the variability between schools. Classrooms with tiled floors had higher Pb loadings than classrooms with wood or vinyl floors. In addition, wet cleaning less than once a week resulted in greater loadings of Cu and Pb in the settled dust. Lastly, enrichment factors showed that metals in settled dust of classrooms were not only from the contribution of the natural background concentrations in soils.

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“…Positive correlations between exposure to house dust and the body burden of many environmental contaminants, including heavy metals, poly aromatic hydrocarbons and persistent organic pollutants have been reported in the literature (Zota et al, 2011;Lu et al, 2014). Intake of house dust by children and adults can occur through several pathways and activities such as hand-to-mouth, eating food dropped on floor, or to a lesser extent, ingestion via mouth inhalation and skin absorption (Paustenbach et al, 1997;Turner, 2011).…”

Section: Introductionmentioning

confidence: 99%

Loading Rates of Dust and Metals in Residential Houses of Arid and Dry Climatic Regions

Shraim

Alenazi

Abdel‐Salam

et al. 2016

Aerosol Air Qual. Res.

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Dust samples were collected from 38 naturally ventilated houses for 12 weeks. Effects of three variables in two groups each were evaluated: proximity to traffic density (main-and side-roads), cigarettes smoking (smoking and no-smoking), and houses' age (old and new). No significant differences were identified between the two groups for all variables (p = 0.227-0.247). The average dust loading rate for the entire group was 66.7 ± 30.9 mg m -2 week -1 . The average metal concentrations (µg g -1 ) for the entire group were 58.7 ± 17.4 for V, 53.8 ± 12.7 (Cr), 473 ± 137 (Mn), 9.68 ± 2.83 (Co), 130 ± 52.1 (Cu), 241 ± 65.3 (Sr), 0.827 ± 0.552 (Cd), 324 ± 143 (Ba), and 58.9 ± 28.9 for Pb. Likewise, the average metal loading rates (µg m -2 week -1) for the entire group were: 4.01 ± 2.41 for V, 3.62 ± 1.97 (Cr), 31.9 ± 18.3 (Mn), 0.662 ± 0.387 (Co), 8.57 ± 5.30 (Cu), 16.3 ± 9.23 (Sr), 0.051 ± 0.034 (Cd), 21.1 ± 12.4 (Ba), and 3.97 ± 2.74 for Pb. We noticed enrichment factors (EF) of less than 2 and strong correlations between V, Cr, Mn, Co, and Sr indicating their crustal origin. Conversely, Pb, Cu, and Cd showed low to moderate correlations together with moderate to significant EF suggesting anthropogenic pollution of non-crustal origins. Despite the scarcity of rain fall and arid environment in the studied area, our dust and metal loading rates can be considered as intermediate when compared to some international cities. Such a finding could be attributed to the absence of major industries and the relatively low traffic density in our study area.

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Assessment of metals pollution and health risk in dust from nursery schools in Xi’an, China

Cited by 273 publications

References 46 publications

Polybrominated diphenyl ethers (PBDEs) and heavy metals in road dusts from a plastic waste recycling area in north China: implications for human health

Polybrominated diphenyl ethers (PBDEs) and heavy metals in road dusts from a plastic waste recycling area in north China: implications for human health

Exposure Assessment of Allergens and Metals in Settled Dust in French Nursery and Elementary Schools

Loading Rates of Dust and Metals in Residential Houses of Arid and Dry Climatic Regions

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