标准参考材料和土壤样本中砷和铅的体外生物可及性循环测试。

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Integrated Environmental Assessment and Management Pub Date : 2024-02-08 DOI:10.1002/ieam.4891

Matt Dodd, Deanna Lee, Jasen Nelson, Sergei Verenitch, Ross Wilson

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引用次数: 0

摘要

在本研究中，我们评估了在 USEPA 方法 1340 中使用美国国家标准与技术研究院 (NIST) 2710a 或 NIST 2711a 以外的标准参考物质 (SRM) 来测定砷 (As) 和铅 (Pb) 体外生物检出度 (IVBA) 的适宜性，以及加拿大实验室执行该方法的能力。五家实验室参加了初步的循环研究，并对 NIST 2710a、NIST 2711a、BGS119 和 Enviromat SS-2 进行了分析。实验室内部和实验室之间的变异性总体上可以接受，相对标准偏差 (RSD) 小于 20%。BGS119 获得的总砷和总铅平均浓度（分别为 332 和 936 mg/kg）以及 IVBA 平均值（As = 14.3% 和 Pb = 78.1%）表明，它可能是一种合适且可接受的 SRM，而 Enviromat SS-2 中的砷浓度（3.2 mg/kg）被认为太低。在一项后续的循环研究中，使用改良的 IVBA 方法分析了来自不同土地用途地点的十个土壤样本，其中包括作为 SRM 的 BGS119。参与研究的实验室报告的 IVBA 提取物中的砷和铅浓度相当。现场采集样本的平均 IVBA 值从 0.1% 到 56.4% 不等；铅的平均 IVBA 值从 7.0% 到 121% 不等。矿区样本的 IVBA 值最低；受冶炼厂影响的土壤 IVBA 值最高。IVBA 值低与铁含量高有关。实验室内和实验室间的重现性是可以接受的（RSD

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In vitro bioaccessibility round robin testing for arsenic and lead in standard reference materials and soil samples

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In vitro bioaccessibility round robin testing for arsenic and lead in standard reference materials and soil samples

In this study, we assessed the suitability of using a standard reference material (SRM) other than National Institute of Standards and Technology (NIST) 2710a or NIST 2711a in USEPA Method 1340 to determine arsenic (As) and lead (Pb) in vitro bioaccessibility (IVBA) and the capabilities of Canadian-based laboratories to perform the method. Five laboratories participated in an initial round robin study and analyzed NIST 2710a, NIST 2711a, BGS119, and Enviromat SS-2. Intra- and inter-laboratory variability were generally acceptable with percentage relative standard deviations (RSD) of less than 20%. The mean total As and Pb concentrations obtained for BGS119 (332 and 936 mg/kg, respectively) and the mean IVBA values (As = 14.3% and Pb = 78.1%) suggested it may be a suitable and acceptable SRM, whereas the concentration of As in Enviromat SS-2 as received (3.2 mg/kg) was deemed too low. Ten soil samples from sites with varying land use were analyzed in a follow-up round robin study using the modified IVBA method that included BGS119 as SRM. The concentrations of As and Pb in the IVBA extracts reported by the participating laboratories were comparable. The mean As IVBA values for the field-collected samples ranged from 0.1% to 56.4%; for Pb, they ranged from 7.0% to 121%. The lowest IVBA values were measured in mine site samples; the highest values were associated with smelter-affected soils. The low IVBA values correlated with high iron content. Intra- and interlaboratory reproducibility were acceptable (RSD < 30%). Based on the findings of the study, laboratories can use the modified method to provide reproducible and comparable As and Pb IVBA data. The use of BGS119 as an alternative SRM to assess contaminated sites in the province of British Columbia for regulatory purposes is recommended, as it is representative of As and Pb concentrations in contaminated soils in British Columbia. Integr Environ Assess Manag 2024;20:1486–1495. © 2024 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).

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来源期刊

Integrated Environmental Assessment and Management ENVIRONMENTAL SCIENCESTOXICOLOGY&nbs-TOXICOLOGY

CiteScore

5.90

自引率

6.50%

发文量

156

期刊介绍： Integrated Environmental Assessment and Management (IEAM) publishes the science underpinning environmental decision making and problem solving. Papers submitted to IEAM must link science and technical innovations to vexing regional or global environmental issues in one or more of the following core areas: Science-informed regulation, policy, and decision making Health and ecological risk and impact assessment Restoration and management of damaged ecosystems Sustaining ecosystems Managing large-scale environmental change Papers published in these broad fields of study are connected by an array of interdisciplinary engineering, management, and scientific themes, which collectively reflect the interconnectedness of the scientific, social, and environmental challenges facing our modern global society: Methods for environmental quality assessment; forecasting across a number of ecosystem uses and challenges (systems-based, cost-benefit, ecosystem services, etc.); measuring or predicting ecosystem change and adaptation Approaches that connect policy and management tools; harmonize national and international environmental regulation; merge human well-being with ecological management; develop and sustain the function of ecosystems; conceptualize, model and apply concepts of spatial and regional sustainability Assessment and management frameworks that incorporate conservation, life cycle, restoration, and sustainability; considerations for climate-induced adaptation, change and consequences, and vulnerability Environmental management applications using risk-based approaches; considerations for protecting and fostering biodiversity, as well as enhancement or protection of ecosystem services and resiliency.