Distinguishing Between Naturally and Anthropogenically Elevated Arsenic at an Abandoned Arctic Military Site

Koch, Iris; Duso, Angela; Haug, Corinne; Miskelly, Christy; Sommerville, Melanie; Smith, Paula G.; Reimer, Kenneth J.

doi:10.1080/15275920500351700

Cited by 8 publications

(8 citation statements)

References 11 publications

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“…removal of the bubbling of argon gas to simulate mixing. Such modification did not affect the results as proved by data obtained for our standard reference materials, which were similar to those found elsewhere (Girouard and Zagury 2009;Koch et al 2005Koch et al , 2007Pouschat and Zagury 2006).…”

Section: Bioaccessible Arsenicsupporting

confidence: 80%

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Arsenic bioaccessibility in a gold mining area: a health risk assessment for children

Ono

Guilherme

Penido

et al. 2011

Environ Geochem Health

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High concentrations of total arsenic (As) have been measured in soils of gold mining areas of Brazil. However, bioaccessibility tests have not yet been conducted on those materials, which is essential for better health risk estimates. This study aimed at evaluating As bioaccessibility in samples from a gold mining area located in Brazil and assessing children's exposure to As-contaminated materials. Samples were collected from different materials (a control and four As-contaminated soils/sediments) found in a gold mine area located in Paracatu (MG), Brazil. Total and bioaccessible As concentrations were determined for all samples. The control soil presented the lowest As concentrations, while all other materials contained high total As concentrations (up to 2,666 mg kg(-1)) and low bioaccessible As percentage (<4.2%), indicating a low risk from exposure of resident children next to this area. The calculated dose of exposure indicated that, except for the pond tailings, in all other areas, the exposure route considering soil ingestion contributed at most to 9.7% of the maximum As allowed ingestion per day (0.3 μg kg(-1) BW day(-1)).

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Section: Bioaccessible Arsenicsupporting

confidence: 80%

“…Both reference materials were analyzed by the USEPA 3051A method and only the NIST 2710 was evaluated by the IVG protocol. The NIST 2710 has been used in other studies of As bioaccessibility (Girouard and Zagury 2009;Koch et al 2005Koch et al , 2007Pouschat and Zagury 2006), which was not the case for the NIST 2709.…”

Section: Bioaccessible Arsenicmentioning

confidence: 98%

Arsenic bioaccessibility in a gold mining area: a health risk assessment for children

Ono

Guilherme

Penido

et al. 2011

Environ Geochem Health

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“…These values were very close to those reported in other studies (Koch et al, 2005;Pouschat & Zagury, 2006;Girouard & Zagury, 2009). Hamel et al (1998), using the US Pharmacopoeia (USP) method, obtained a bioaccessible As value of 41 ± 18 % for NIST 2710 at a solution:solid ratio of 100:1.…”

Section: Resultssupporting

confidence: 80%

“…Solo, 36:1355-1360 the IVG protocol. NIST 2710 has been used in other As bioaccessibility studies (Hamel et al, 1998;Ellickson et al, 2001;Koch et al, 2005;Pouschat & Zagury, 2006;Koch et al, 2007;Girouard & Zagury, 2009).…”

Section: Quality Assurance Quality Controlmentioning

confidence: 99%

Replication of an ivg protocol to estimate bioaccessible arsenic in materials from a gold mining area in Brazil

Ono

Guilherme

Mendes

et al. 2012

Rev. Bras. Ciênc. Solo

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SUMMARYTests for bioaccessibility are useful in human health risk assessment. No research data with the objective of determining bioaccessible arsenic (As) in areas affected by gold mining and smelting activities have been published so far in Brazil. Samples were collected from four areas: a private natural land reserve of Cerrado; mine tailings; overburden; and refuse from gold smelting of a mining company in Paracatu, Minas Gerais. The total, bioaccessible and Mehlich-1-extractable As levels were determined. Based on the reproducibility and the accuracy/precision of the in vitro gastrointestinal (IVG) determination method of bioaccessible As in the reference material NIST 2710, it was concluded that this procedure is adequate to determine bioaccessible As in soil and tailing samples from gold mining areas in Brazil. All samples from the studied mining area contained low percentages of bioaccessible As.Index terms: trace elements, in vitro tests, environmental pollution.(1) Part of the dissertation of the first author, student of the Soil Science Graduation Program, Soil Science Department, Federal University of Lavras, CP 3037, Campus UFLA. CEP 37200-000 Lavras (MG

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“…These contaminants are associated with a legacy of industrial activities (Gasser et al, 1996;Razo et al, 2006;Rieuwerts et al, 2006;Basta et al, 2007;Laird et al, 2007;Morrison and Gulson, 2007;Romero et al, 2008;Caboche et al,2010;Meunier et al,2010; and natural background geology (Fendorf et al, 2004;Koch et al, 2005;Nathanail et al, 2005;Palumbo-Roe et al, 2005;Cave et al, 2007;Juhasz et al, 2007b;, which are of concern to a number of the countries participating in BARGE.…”

Section: Introductionmentioning

confidence: 99%

An inter-laboratory trial of the unified BARGE bioaccessibility method for arsenic, cadmium and lead in soil

Wragg

Cave

Basta

et al. 2011

Science of The Total Environment

166

202

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The Bioaccessibility Research Group of Europe (BARGE) has carried out an interlaboratory trial of a proposed harmonised in vitro physiologically based ingestion bioaccessibility procedure for soils, called the Unified BARGE Method (UBM). The UBM includes an initial saliva phase and simulated stomach and intestine compartments. The trial involved the participation of seven laboratories (five European and two North American) providing bioaccessibility data for As (11 samples), Cd (9 samples) and Pb (13 samples) using soils with in vivo relative bioavailability data measured using a swine model. The results of the study were compared with benchmark criteria for assessing the suitability of the UBM to provide data for human health risk assessments. Mine waste and slag soils containing high concentrations of As caused problems of poor repeatability and reproducibility which were alleviated when the samples were run at lower soil to solution ratios. The study showed that the UBM met the benchmark criteria for both the stomach and stomach & intestine phase for As. For Cd, three out of four criteria were met for the stomach phase but only one for the stomach & intestine phase. For Pb two, out of four criteria were met for the stomach phase and none for the stomach & intestine phase. However, the study recommends tighter control of pH in the stomach phase extraction to improve between-laboratory variability, more reproducible in vivo validation data and that a follow up inter-laboratory trial should be carried out.

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Distinguishing Between Naturally and Anthropogenically Elevated Arsenic at an Abandoned Arctic Military Site

Cited by 8 publications

References 11 publications

Arsenic bioaccessibility in a gold mining area: a health risk assessment for children

Arsenic bioaccessibility in a gold mining area: a health risk assessment for children

Replication of an ivg protocol to estimate bioaccessible arsenic in materials from a gold mining area in Brazil

An inter-laboratory trial of the unified BARGE bioaccessibility method for arsenic, cadmium and lead in soil

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