Arsenic and presumed resistate trace element geochemistry of the Lincolnshire (UK) sedimentary ironstones, as revealed by a regional geochemical survey using soil, water and stream sediment sampling

Breward, N.

doi:10.1016/j.apgeochem.2007.03.058

Cited by 27 publications

(12 citation statements)

References 15 publications

(16 reference statements)

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“…Total As, Cr, and Ni concentrations are not significantly different in the soil types when stratified by allotment or residential land use (Figure 3). The total As concentrations for the Cherwell District are in the same general concentration range of those previously measured by Palumbo-Roe et al [10] who detected total As concentrations of up to 400 mg kg −1 and by Breward [29] who reported As concentrations of up to 340 mg kg −1 for the Claxby ironstones. However, the As concentrations in ironstone derived soils reported by Nathanail et al, Breward (Frodingham ironstones), and Wragg were markedly lower compared to the ranges reported here [22,[29][30][31].…”

Section: Resultssupporting

confidence: 84%

The Solid Phase Distribution and Bioaccessibility of Arsenic, Chromium, and Nickel in Natural Ironstone Soils in the UK

Wragg

Cave

Gregory³

2014

Applied and Environmental Soil Science

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Thirty soil samples (12 residential gardens and 18 allotments) were collected from the Cherwell District of north Oxfordshire in south-central England. The underlying parent geology of the area is dominated by Jurassic ironstone. The samples were analysed for their total contents of As, Cr, and Ni by X-ray fluorescence spectroscopy and for the bioaccessible fractions of these elements using a physiologically based extraction test. Four soils (two residential soils and two allotment soils) were chosen for further determination of their element solid phase distribution. The study showed that whilst total concentrations of As, Cr, and Ni are elevated due to the soil parent material, the bioaccessibility test showed that only a small proportion of the total concentration is available for absorption into the human body (<15%). The sequential extraction test showed that the nonmobile forms of the elements are strongly sorbed on to iron oxides. Parent material geology has a significant effect on the total element concentrations and the bioaccessibility of potentially harmful element (PHE). Land use does not show such a large effect but the allotment bioaccessibility data show a bigger spread and possibly higher values for As and Cr which may be due to agronomic (cultivation) practices such as addition of fertilisers and organic matter.

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Section: Resultssupporting

confidence: 84%

The Solid Phase Distribution and Bioaccessibility of Arsenic, Chromium, and Nickel in Natural Ironstone Soils in the UK

Wragg

Cave

Gregory³

2014

Applied and Environmental Soil Science

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“…Pb, As) above these typical baselines can also be of natural (geogenic) origin in the urban environment due to variations in the bedrock geology. For example, many sedimentary ironstones contain significantly elevated levels of As, and other heavy metals, in addition to high iron concentrations (Breward, 2007), whereas black shale lithologies often show high concentrations of Cu, Cd, Mo, Se, U and V (Breward, 2003a;British Geological Survey, 1997Loukola-Ruskeeniemi, 1992, 1995. The proportions of natural and anthropogenic components may vary widely, depending on the geology and the industrial history of the urban centre in question, though the bioavailability of geogenic and anthropogenic forms of the elements may be different.…”

Section: Industry/sourcementioning

confidence: 99%

Sources of Anthropogenic Contaminants in the Urban Environment

Albanese

Breward

2011

Mapping the Chemical Environment of Urban Areas

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“…As associated with middle Jurassic ironstones and associated soil parent materials in the English East Midlands and Cretaceous ironstones in eastern England (Breward, 2007) and their associated soil parent materials (PMs). The objective was to assess the potential for developing bioaccessible As datasets derived from the BGS National and Urban Soil Chemistry datasets (Appleton et al, 2008;BGS, 2009;Appleton, 2011;Appleton and Adlam, 2012).…”

Section: Introductionmentioning

confidence: 99%

Anthropogenic and geogenic impacts on arsenic bioaccessibility in UK topsoils

Appleton¹,

Cave²,

Wragg³

2012

Science of The Total Environment

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Predictive linear regression (LR) modelling between bioaccessible arsenic (B-As) and a range of total elemental compositions and soil properties was executed in order to assess the potential for developing a national B-As dataset for the UK. LR indicates that total arsenic (As) is the only highly significant independent variable for estimating B-As in urban areas where it explains 75-92% of the variance. The broad compatibility of the London, Glasgow and Swansea regression models suggests that application of these models to estimate bioaccessible As in UK soils impacted by diffuse anthropogenic urban contamination and non-ferrous metal processing should be relatively accurate. In areas dominated by Jurassic ironstones and associated clays and limestones, total As, P and pH are significant, accounting for 53, 14 and 5%, respectively, of the B-As variance. Models based on total As as the sole predictor in the combined Jurassic and Cretaceous sedimentary ironstones datasets explain about 40% of the B-As variance. The median As bioaccessible fraction (%As-BAF) is 19 to 28% in the anthropogenic contamination impacted urban domains, but much lower (5-9%) in geogenic terrains dominated by ironstones. Results of this study can be used as part of a lines of evidence approach to localised risk assessment but should not be used to replace bioaccessibility testing at individual sites where local conditions may vary considerably from the broad overview presented in this study.

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Arsenic and presumed resistate trace element geochemistry of the Lincolnshire (UK) sedimentary ironstones, as revealed by a regional geochemical survey using soil, water and stream sediment sampling

Cited by 27 publications

References 15 publications

The Solid Phase Distribution and Bioaccessibility of Arsenic, Chromium, and Nickel in Natural Ironstone Soils in the UK

The Solid Phase Distribution and Bioaccessibility of Arsenic, Chromium, and Nickel in Natural Ironstone Soils in the UK

Sources of Anthropogenic Contaminants in the Urban Environment

Anthropogenic and geogenic impacts on arsenic bioaccessibility in UK topsoils

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