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DOI | 10.1039/c2em30789h |
Evaluation of a low-cost commercially available extraction device for assessing lead bioaccessibility in contaminated soils | |
Nelson, Clay M.1; Gilmore, Thomas M.2; Harrington, James M.3; Scheckel, Kirk G.4; Miller, Bradley W.3; Bradham, Karen D.1 | |
发表日期 | 2013 |
ISSN | 2050-7887 |
卷号 | 15期号:3页码:573-578 |
英文摘要 | The U.S. EPA's in vitro bioaccessibility (IVBA) method 9200.1-86 defines a validated analytical procedure for the determination of lead bioaccessibility in contaminated soils. The method requires the use of a custom-fabricated extraction device that uses a heated water bath for sample incubation. In an effort to improve ease of use, increase sample throughput, and reduce equipment acquisition and maintenance costs, an alternative low-cost, commercially available extraction device capable of sample incubation via heated air and end-over-end rotation was evaluated. An intra-laboratory study was conducted to compare lead bioaccessibility values derived using the two extraction devices. IVBA values were not statistically different (alpha = 0.05) between the two extraction devices for any of the soils (n = 6) evaluated in this study, with an average difference in mean lead IVBA of 0.8% (s.d. = 0.5%). The commercially available extraction device was able to generate accurate lead IVBA data as compared to the U.S. EPA's expected value for a National Institute of Standards and Technology standard reference material soil. The relative percent differences between high and low IVBA values for each soil, a measure of instrument precision, were also not statistically different (alpha = 0.05) between the two extraction devices. The statistical agreement of lead IVBA values observed using the two extraction devices supports the use of a low-cost, commercially available extraction device as a reliable alternative to a custom-fabricated device as required by EPA method 9200.1-86. |
语种 | 英语 |
WOS记录号 | WOS:000315398300004 |
来源期刊 | ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/59328 |
作者单位 | 1.US EPA, Off Res & Dev, Natl Exposure Res Lab, Durham, NC 27711 USA; 2.Natl Caucus & Ctr Black Aged Inc, Senior Environm Employment Program, Durham, NC 27713 USA; 3.Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA; 4.US EPA, Off Res & Dev, Natl Risk Management Res Lab, Cincinnati, OH 45224 USA |
推荐引用方式 GB/T 7714 | Nelson, Clay M.,Gilmore, Thomas M.,Harrington, James M.,et al. Evaluation of a low-cost commercially available extraction device for assessing lead bioaccessibility in contaminated soils[J]. 美国环保署,2013,15(3):573-578. |
APA | Nelson, Clay M.,Gilmore, Thomas M.,Harrington, James M.,Scheckel, Kirk G.,Miller, Bradley W.,&Bradham, Karen D..(2013).Evaluation of a low-cost commercially available extraction device for assessing lead bioaccessibility in contaminated soils.ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,15(3),573-578. |
MLA | Nelson, Clay M.,et al."Evaluation of a low-cost commercially available extraction device for assessing lead bioaccessibility in contaminated soils".ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS 15.3(2013):573-578. |
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