Bioaccessibility of trace elements in soils in Northern Ireland

Barsby, Amy; McKinley, Jennifer; Ofterdinger, Ulrich; Young, Mike; Cave, Mark; Wragg, Joanna

doi:10.1016/j.scitotenv.2012.05.099

Cited by 69 publications

(66 citation statements)

References 39 publications

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“…Geochemical studies have reported elevated levels of potentially toxic elements (PTEs) in soils from both urban (Cicchella et al 2005;Rodrigues et al 2006;Okorie et al 2011;Dao et al 2012) and rural areas (Salminen et al 2005;Cicchella et al 2005;Barsby et al 2012). These elevated PTE levels have been found to be due to geogenic (Wragg 2005) and anthropogenic (Dao et al 2012) sources of contamination or a combination of both (Facchinelli et al 2001;Zhang et al 2008;Rodrigues et al 2006;Mostert et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…These elevated PTE levels have been found to be due to geogenic (Wragg 2005) and anthropogenic (Dao et al 2012) sources of contamination or a combination of both (Facchinelli et al 2001;Zhang et al 2008;Rodrigues et al 2006;Mostert et al 2012). Elevated nickel (Ni) and chromium (Cr) from geogenic sources have been identified worldwide (Quantin et al 2008;Megremi 2010;Kierczak et al 2007;Johnson et al 2012;Barsby et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…In the UK for 4 UBM method has been validated against in-vivo studies for As, Pd and Cd , and has been used for bioaccessibility studies of Cd, Pb and Zn (Pelfrêne et al 2012), Sb (Denys et al 2009), Cr (Broadway et al 2010), As, Cd, Cr, Cu, Ni, Pb and Zn (Okorie et al 2011) and As, Cd, Co, Cr, Cu, Ni, Pb, U, V and Zn (Barsby et al 2012). …”

Section: Introductionmentioning

confidence: 99%

“…The Tellus survey of trace metal concentrations in shallow soils in Northern Ireland (Smyth, 2007) revealed elevated Ni and Cr concentrations across a significant area of the Antrim Plateau (Barsby et al 2012). These levels exceeded the current UK soil guidelines values (SGVs) for Ni in soils with a residential or allotment enduse (EA 2009b) and the LQM/CIEH Generic Assessment Criteria for Cr VI in soils with a residential, allotment or commercial enduse (Nathanail et al 2009).…”

Section: Introductionmentioning

confidence: 99%

“…On the basis of total concentration, these elevated Ni and Cr concentrations would therefore raise a cause for concern during human health risk assessment for redevelopment of these areas as residential, allotment or commercial landuses. However bioaccessibility testing undertaken by Barsby et al (2012) indicated that these contaminants are not readily bioaccessible and therefore risks to human health are reduced. A greater understanding of both the mineral and chemical forms of Ni and Cr present in the soils overlying the Antrim Lava Group would facilitate more informed decision making during contaminated land risk assessments in Northern Ireland, and refine the assessment of risks posed by elevated geogenic Ni and Cr in soils worldwide.…”

Section: Introductionmentioning

confidence: 99%

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The importance of solid-phase distribution on the oral bioaccessibility of Ni and Cr in soils overlying Palaeogene basalt lavas, Northern Ireland

Cox

Chelliah

McKinley

et al. 2013

Environ Geochem Health

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Potentially toxic elements (PTEs) including nickel and chromium are often present in soils overlying basalt at concentrations above regulatory guidance values due to the presence of these elements in underlying geology. Oral bioaccessibility testing allows the risk posed by PTEs to human health to be assessed, however bioaccessibility is controlled by factors including mineralogy, particle size, solid phase speciation and encapsulation. X-ray diffraction (XRD) was used to characterise the mineralogy of 12 soil samples overlying Palaeogene basalt lavas in Northern Ireland and non specific sequential extraction coupled with chemometric analysis was used to determine the distribution of elements amongst soil components in 3 of these samples. The data obtained were related to total concentration and oral bioaccessible concentration to determine whether a relationship exists between the overall concentrations of PTEs, their bioaccessibility and the soils mineralogy and geochemistry.Gastric phase bioaccessible fraction (BAF%) ranged from 0.4% to 5.4% for chromium in soils overlying basalt and bioaccessible and total chromium concentrations are positively correlated. In contrast the range of gastric phase BAF for nickel was greater (1.4 to 43.8%), while no significant correlation was observed between bioaccessible and total nickel concentrations. However nickel BAF was inversely correlated with total concentration. Solid phase fractionation information showed that bioaccessible nickel was associated with calcium carbonate, aluminum oxide, iron oxide and clay related components, while bioaccessible chromium was associated with clay related components. This suggests that weathering significantly affects nickel bioaccessibility, but does not have the same effect on the bioaccessibility of chromium. Suggested keywordsoral bioaccessibility, nickel, chromium, basalt, sequential extraction, solid phase distribution 3

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The importance of solid-phase distribution on the oral bioaccessibility of Ni and Cr in soils overlying Palaeogene basalt lavas, Northern Ireland

Cox

Chelliah

McKinley

et al. 2013

Environ Geochem Health

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Application of Bioavailability Measurements in Medical Geology

Cave

Wragg

2021

Practical Applications of Medical Geology

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Chronic Kidney Disease of Uncertain Aetiology and Its Relation with Waterborne Environmental Toxins: An Investigation via Compositional Balances

McKinley

Mueller

Atkinson

et al. 2021

Advances in Compositional Data Analysis

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The occurrence of environmental clusters of chronic kidney disease of uncertain aetiology (CKDu), where there is no known cause for the onset of kidney dysfunction, is a concern globally. Waterborne exposure pathways in the environment may result in indirect or direct ingestion of trace elements with potential health risks. This research examines the relationship between standardized incidence rates (SIRs) of CKDu and the log-ratio balances of potentially toxic elements (PTEs) in regional stream water. Compositional elemental balances were created and regression was used to identify the balances most associated with log-transformed SIR CKDu. At the regional scale, a statistically significant relationship was found between log(CKDu SIR) and the elemental balance Al/As which effectively delineates different geological domains across Northern Ireland. Following stratification by basalt bedrock (the dominant bedrock geology for SIR CKDu), the balance Al/Fe was identified as significantly associated with log(CKDu SIR). Superficial deposits, dissolved organic carbon and pH may act as controls on the balance of Al and Fe. With a high proportion of private water supplies registered in these areas, this research highlights the importance of considering bedrock geology and superficial deposits in understanding multi-element interactions of waterborne environmental toxins and potential links with environmental clusters of CKDu.We would like to acknowledge and thank our esteemed colleague and friend Vera Pawlowsky-Glahn who has been instrumental in the development of this research, pioneering the importance of compositional data analysis (CoDA) in the study of health and the environment. For several of us, Vera provided our first introduction to CoDA and over many years has aided our shared understanding and increased awareness of the need to address the compositional nature of data such as soil and water geochemistry in our research. We are pleased to have this work on the use of compositional balances in exploring the explanatory environmental factors related to chronic kidney disease of uncertain aetiology included in this Zestschrift. It represents an exciting field of innovative research where an acknowledgement of CoDA principles is vital if we are to understand fully the critical relationship between our health and the environment.

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Bioaccessibility of trace elements in soils in Northern Ireland

Cited by 69 publications

References 39 publications

The importance of solid-phase distribution on the oral bioaccessibility of Ni and Cr in soils overlying Palaeogene basalt lavas, Northern Ireland

The importance of solid-phase distribution on the oral bioaccessibility of Ni and Cr in soils overlying Palaeogene basalt lavas, Northern Ireland

Application of Bioavailability Measurements in Medical Geology

Chronic Kidney Disease of Uncertain Aetiology and Its Relation with Waterborne Environmental Toxins: An Investigation via Compositional Balances

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