Exposure to metal mixtures and human health impacts in a contaminated area in Nanning, China

Cui, Yujing; Zhu, Yan; Zhai, Rihong; Huang, Yi-Zhong; Qiu, Yi; Liang, Jian-Zhong

doi:10.1016/j.envint.2005.05.025

Cited by 269 publications

(123 citation statements)

References 21 publications

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“…Furthermore, our results showed that continuous wastewater irrigation led to elevated levels of heavy metals in the soils and in edible parts of food crops. Heavy metal accumulation by vegetables is a cause of serious concern due to the potential public health impacts (Bi et al, 2006;Cui et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Health risks of heavy metals in contaminated soils and food crops irrigated with wastewater in Beijing, China

Khan

Cao

Zheng

et al. 2008

Environmental Pollution

2,038

912

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Long-term wastewater irrigation leads to buildup of heavy metals in soils and food crops. AbstractConsumption of food crops contaminated with heavy metals is a major food chain route for human exposure. We studied the health risks of heavy metals in contaminated food crops irrigated with wastewater. Results indicate that there is a substantial buildup of heavy metals in wastewater-irrigated soils, collected from Beijing, China. Heavy metal concentrations in plants grown in wastewater-irrigated soils were significantly higher (P 0.001) than in plants grown in the reference soil, and exceeded the permissible limits set by the State Environmental Protection Administration (SEPA) in China and the World Health Organization (WHO). Furthermore, this study highlights that both adults and children consuming food crops grown in wastewater-irrigated soils ingest significant amount of the metals studied. However, health risk index values of less than 1 indicate a relative absence of health risks associated with the ingestion of contaminated vegetables.

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Section: Discussionmentioning

confidence: 99%

Health risks of heavy metals in contaminated soils and food crops irrigated with wastewater in Beijing, China

Khan

Cao

Zheng

et al. 2008

Environmental Pollution

2,038

912

View full text Add to dashboard Cite

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“…Therefore, soil contamination with heavy metals has attracted interest, due to both environmental and health-risk concerns [5,6]. Inadvertent oral ingestion of soil is considered an important exposure pathway for metals and other contaminants, especially in children through outdoor hand-tomouth activities [7].…”

Section: Introductionmentioning

confidence: 99%

Pilot study of temporal variations in lead bioaccessibility and chemical fractionation in some Chinese soils

Tang

Cui

Duan

et al. 2008

Journal of Hazardous Materials

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a b s t r a c tThe effect of ageing, following the addition of ∼400 mg kg −1 lead (Pb) as Pb(NO 3 ) 2 , on Pb bioaccessibility was examined in five typical Chinese soils using a physiologically based extraction test. Sequential extraction was employed to identify the source fraction(s) of bioaccessible Pb in the soils. Pb bioaccessibility decreased exponentially to nearly steady levels in mildly acidic or alkali (pH 6.09-7.43) soils, for both gastric (69.91-71.75%) and small intestinal (7.53-9.63%) phases within the first 2-4 weeks and 1-2 months of incubation, respectively; however, it took only 1-2 weeks for strongly acidic (≈ pH 4.5) soils to reach nearly steady levels of Pb bioaccessibility (73.01-74.46% and 10.30-10.98% in the gastric and small intestinal phases, respectively). In addition to the water-soluble and exchangeable fractions, the carbonate fraction of mildly acidic or alkali soils appeared to be a third main source of bioaccessible Pb in the small intestinal phase; however, bioaccessible Pb was likely to derive principally from Pb in the water-soluble and exchangeable fractions of strongly acidic soils. Bioaccessible Pb in the gastric phase appeared to derive from all the fractions in all five studied soils, even the residual fraction.

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“…5 La exposición humana y ambiental a metales pesados y metaloides puede tener causas naturales como la erosión de suelos ricos en estos elementos y su transportación a los cuerpos de agua o causas antropomórficas como la generación eléctrica, los residuos sólidos de procesos industriales, las baterías no recicladas, los materiales de la industria de la fundición y la aplicación de fertilizantes y plaguicidas en agricultura. 6,7 La variabilidad espacial de la concentración de contaminantes se usa para determinar la localización probable de las actividades humanas o fenómenos naturales que podrían ser la causa de contaminación. 8 Los muestreos de cuerpos de agua y los sistemas de información geográfica (SIG) se utilizan como un mé-todo de detección de fuentes contaminantes de metales y metaloides.…”

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Riesgos potenciales de salud por consumo de agua con arsénico en Colima, México

et al. 2017

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Objetivo. Estimar los riesgos potenciales de salud debidos a la ingestión crónica de arsénico (As) en agua en Colima, México. Material y métodos. Se muestrearon aleatoriamente 36 pozos en 10 acuíferos locales. El análisis se hizo mediante ICP-OES siguiendo estándares internacionales. Se realizó una interpolación geoestadística con ArcGIS, implementando un modelo de ponderación del inverso de la distancia, para estimar la ruta de exposición de consumo en cada localidad. Se calcularon los coeficientes de peligro (HQ)y riesgo carcinogénico (R). Resultados. El HQ promedio ponderado de As para Colima es 2.41. Existen valores de HQ>1 para As que indican efectos adversos no carcinogénicos para la salud por ingestión continua y prolongada de agua; esto podría afectar a 183 832 individuos en el estado. El riesgo calculado de desarrollar cáncer debido a las concentraciones de arsénico en aguas subterráneas (R) es de 1.089E-3; estadísticamente esto podría ocasionar 446 casos de cáncer. Conclusiones. Los niveles actuales de arsénico en el agua de pozo incrementan los riesgos carcinogénicos y no carcinogénicos de salud humana en Colima.

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Exposure to metal mixtures and human health impacts in a contaminated area in Nanning, China

Cited by 269 publications

References 21 publications

Health risks of heavy metals in contaminated soils and food crops irrigated with wastewater in Beijing, China

Health risks of heavy metals in contaminated soils and food crops irrigated with wastewater in Beijing, China

Pilot study of temporal variations in lead bioaccessibility and chemical fractionation in some Chinese soils

Riesgos potenciales de salud por consumo de agua con arsénico en Colima, México

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