Contamination of allotment soil with lead: managing potential risks to health

Prasad, Lakshmi; Nazareth, Bernadette

doi:10.1093/pubmed/22.4.525

Cited by 20 publications

(23 citation statements)

References 9 publications

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“…This was a major problem decades ago when leaded gasoline was in widespread use and could still be a concern in some urban environments. Many earlier plant uptake studies may have been compromised by aerial contamination of vegetables that obscured impacts of soil Pb on vegetable concentrations (Chamberlain, 1983; Dalenberg and Driel, 1990; Prasad and Nazareth, 2000; Sheppard and Evenden, 1992). …”

Section: Introductionmentioning

confidence: 99%

Concentrations of lead, cadmium and barium in urban garden-grown vegetables: The impact of soil variables

McBride

Shayler

Spliethoff

et al. 2014

Environmental Pollution

190

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Paired vegetable/soil samples from New York City and Buffalo, NY, gardens were analyzed for lead (Pb), cadmium (Cd) and barium (Ba). Vegetable aluminum (Al) was measured to assess soil adherence. Soil and vegetable metal concentrations did not correlate; vegetable concentrations varied by crop type. Pb was below health-based guidance values (EU standards) in virtually all fruits. 47% of root crops and 9% of leafy greens exceeded guidance values; over half the vegetables exceeded the 95th percentile of market-basket concentrations for Pb. Vegetable Pb correlated with Al; soil particle adherence/incorporation was more important than Pb uptake via roots. Cd was similar to market-basket concentrations and below guidance values in nearly all samples. Vegetable Ba was much higher than Pb or Cd, although soil Ba was lower than soil Pb. The poor relationship between vegetable and soil metal concentrations is attributable to particulate contamination of vegetables and soil characteristics that influence phytoavailability.

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Section: Introductionmentioning

confidence: 99%

Concentrations of lead, cadmium and barium in urban garden-grown vegetables: The impact of soil variables

McBride

Shayler

Spliethoff

et al. 2014

Environmental Pollution

190

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“…Heavy metals polluting soil constitutes a major environmental problem, which has been the subject of detailed risk assessment and management studies (Peters et al 1986;Schuhmacher et al 1997;Prasad and Nazareth 2000;Zayed 2001;Granero and Domingo 2002). Metal-polluted soils are a major environmental problem.…”

Section: Introductionmentioning

confidence: 99%

Research on the ecological risk of heavy metals in the soil around a Pb–Zn mine in the Huize County, China

Teng

Wang

et al. 2015

Chin. J. Geochem.

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The soil pollution by heavy metals was characterized in the mine tailings and surrounding soils of an old Pb-Zn mine in Huize County. Three hundred and ninety-six samples of agricultural and non-agricultural soil were analyzed for the total metal concentration by acid digestion and sixty-eight selected soil samples were used to determine the chemical fractionation of heavy metals with the modified BCR sequential extraction method. The pollution index of the heavy metals indices for As, Cd, Cr, Cu, Hg, Pb and Zn of non-agricultural soil and agricultural soils in the study area indicated the spreading of heavy metal pollution. Sequential extraction showed that most of Cd existed in an exchangeable form (31.2 %). The available content of Pb, Cu and Zn was mainly distributed in acid extractable fractions and Fe/Mn oxide fractions (27.9, 30 and 27.2 %), and Hg, As and Cr were mainly associated with residual fractions (90.4, 72.9 and 76.8 %). The risks of heavy metals were also evaluated by the risk assessment code (RAC) and potential ecological risk index, respectively. The results of RAC showed a medium and high risk of Cd (45.6 and 54.4 %), medium risk of Zn (100 %), low and medium risk of Cu (41.2 and 58.8 %), largely no risk of Hg (97.1 %), and mainly low risk of As and Pb (92.6 and 91.8 %). The range of the potential ecological risk of soil was 58.2-1839.3, revealing a considerably high ecological risk in the study area, most likely related to acid mine drainage and the mining complexes located in the area. The results can be used during the ecological risk screening stage, in conjunction with the total concentrations and metal fractionation values, to better estimate ecological risk.

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“…Consequently, they are subject to detailed risk assessment and management studies (Peters et al, 1986;Schuhmacher et al, 1997;Prasad and Nazareth, 2000;Zayed, 2001;Granero and Domingo, 2002). Accurate estimates of the natural, background concentration of major and trace elements in topsoil are important for several applications, including the assessment of soil fertility, mineral exploration, contamination assessment, the application of sewage sludge to agricultural land, and estimations of diffuse pollution through atmospheric deposition (Rawlins et al, 2003;Li et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

A geochemical survey of trace elements in agricultural and non-agricultural topsoil in Dexing area, China

Teng

Wang

et al. 2010

Journal of Geochemical Exploration

128

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Contamination of allotment soil with lead: managing potential risks to health

Cited by 20 publications

References 9 publications

Concentrations of lead, cadmium and barium in urban garden-grown vegetables: The impact of soil variables

Concentrations of lead, cadmium and barium in urban garden-grown vegetables: The impact of soil variables

Research on the ecological risk of heavy metals in the soil around a Pb–Zn mine in the Huize County, China

A geochemical survey of trace elements in agricultural and non-agricultural topsoil in Dexing area, China

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