Levels and health risk assessments of heavy metals in urban soils in Dongguan, China

Wu, Shumin; Siqing, Peng; Zhang, Xuexia; Wu, Duilin; Luo, Wei; Zhang, Tianbin; Zhou, Shungui; Yang, Guoyi; Wan, Hongfu; Wu, Leqin

doi:10.1016/j.gexplo.2014.08.009

Cited by 272 publications

(126 citation statements)

References 32 publications

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“…The playground soil sample at FCUA recorded the highest arsenic content, and was observed greater than two of the sampling sites at Rabka's Zdrój playgrounds reported by Alicja and Agnieszka, [8]. However, the mean contents of arsenic in soil samples in urbanized area soils of Dongguan [65], and soils in Beijing [66] were found to occur higher than the cadmium content of soil samples reported in this study. Similarly, the concentration of lead recorded in Table 1 for both the test and control samples were found lower than the baseline values.…”

Section: Discussioncontrasting

confidence: 65%

Accumulation and toxicological risk assessment of Cd, As, Pb, Hg, and Cu from topsoils of school playgrounds at Obio-Akpor LGA Rivers State Nigeria

2017

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The adverse health effects associated with heavy metal pollution have become a subject of topical discussion. Using standard methods, this study evaluated the accumulation and toxicological risks of heavy metal deposition on top soils of school playgrounds in ObioAkpor LGA. Results obtained from the top soils, sampled from 10 different schools showed that the concentration of heavy metals assessed, followed the trend; HgHg>Cu>Cd>As while the highest (0.0213) and least (0.0162) total hazard index value occurred at RBPS and MOM respectively. These values obtained for this study indicate that the school playground's soils are still within the recommended heavy metal content safe levels.

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Section: Discussioncontrasting

confidence: 65%

Accumulation and toxicological risk assessment of Cd, As, Pb, Hg, and Cu from topsoils of school playgrounds at Obio-Akpor LGA Rivers State Nigeria

2017

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“…2), suggesting that Bio-HMs were contributed by various forms of HMs in soils except the residue, which was bound to the inner crystal lattice in the minerals in soils, thus could hardly be mobilized (Ko et al 2005;Luo et al 2012a;Tessier et al 1979). However, for Cu, the R-Bio-HMs were evidently greater than the three combined BCR fractions, suggesting that Cu in soils could be easily mobilized and become accessible to biota in soils and human who ingest the soils (Van Herreweghe et al 2003;Wu et al 2015). For Pb and Zn, the R-Bio-HMs were generally less than the combined first two steps of BCR extracted forms, indicating that the organic complexion and residue forms of HMs contributed little to the bioaccessibility of HMs in soils.…”

Section: Discussionmentioning

confidence: 99%

Factors influencing the heavy metal bioaccessibility in soils were site dependent from different geographical locations

Zhu

Yang

Wei

2015

Environ Sci Pollut Res

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A soil survey was conducted in urban areas from five sites, including Beijing, Baotou, Datong, Fuyang, and Xiantao in China. The objective was to explore the most significant factors that may impact the bioaccessibility of heavy metals (Bio-HMs), including As, Cr, Cu, Pb, and Zn, in soils. Twenty to 30 composite soil samples were collected at each site. The various soil properties, including pH, particle size, Fe/Mn, and organic matter contents, were analyzed. The chemical operated forms of HMs in soils were measured by the Bureau of Reference (BCR) sequential extraction scheme, while the Bio-HMs were determined by the simple bioaccessibility extraction test (SBET) procedure. The concentrations of total heavy metals (T-HMs) in soils from different sites (cities) were in the range as As (5.69-9.86), ) mg/kg. Cu and Pb had higher relative bioaccessibilities (48-70 %) than those of As and Cr (6-15 %), indicating higher health risks of the former than the latter two HMs. The Bio-HMs for various HMs were comparable to the first two or three combined BCR extracted fractions, with an exception of Cu, whose Bio-HMs were larger than the combined three BCR fractions, indicating that Cu was highly accessible in soils as compared with other HMs. Factor analysis showed that all variables, including soil property parameters and BCR extracted fractions, could be represented by three common factors extracted with higher than 0.5 loadings and ∼80 % cumulative contribution to the total variance. Among the three common factors, factor 1, containing mainly pH, texture, and Fe/Mn variables, and factor 3, containing mainly organic matter variable, could be attributed to geographical regions, while factor 2, containing mainly BCR extracted fractions, could be ascribed to relative bioaccessibility of HMs (R-Bio-HMs). Interactive mapping of the main factors and cluster analysis were consistent, which supported the Bsite gathering^of the soil sample pools, suggesting that the BioHMs in soils in different geographical localities were site dependent.

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“…Heavy metals can also be accumulated in organs of human body. Once the accumulated content of heavy metals exceed the limit of the human body can be tolerated, the human body will cause great harm or risk, it will lead to acute poisoning, subacute poisoning, chronic poisoning, and so on [24,25].…”

Section: Current Situation Of Urban Soil Pollutionmentioning

confidence: 99%

Heavy Metal in Urban Soil: Health Risk Assessment and Management

Li¹

2018

Heavy Metals

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With the rapid development of industrialization and urbanization in the developing country, quite a few pollutants produced by anthropological activities enter into urban soil. A large area of urban soil was polluted by different kinds of pollutants. There have been many pollution events like itai-itai disease in the whole world, and many people suffered from urban soil pollution. As the place where people are highly concentrated,

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Levels and health risk assessments of heavy metals in urban soils in Dongguan, China

Cited by 272 publications

References 32 publications

Accumulation and toxicological risk assessment of Cd, As, Pb, Hg, and Cu from topsoils of school playgrounds at Obio-Akpor LGA Rivers State Nigeria

Accumulation and toxicological risk assessment of Cd, As, Pb, Hg, and Cu from topsoils of school playgrounds at Obio-Akpor LGA Rivers State Nigeria

Factors influencing the heavy metal bioaccessibility in soils were site dependent from different geographical locations

Heavy Metal in Urban Soil: Health Risk Assessment and Management

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