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DOI | 10.1007/s00244-016-0284-6 |
Sediment Bioaccumulation Test with Lumbriculus variegatus: Effects of Organism Loading | |
Burkhard, Lawrence P.1; Hubin-Barrows, Dylan2; Billa, Nanditha3; Highland, Terry L.1; Hockett, James R.1; Mount, David R.1; Norberg-King, Teresa J.1 | |
发表日期 | 2016-07-01 |
ISSN | 0090-4341 |
卷号 | 71期号:1页码:70-77 |
英文摘要 | At contaminated sediment sites, the bioavailability of contaminants in sediments is assessed using sediment-bioaccumulation tests with Lumbriculus variegates (Lv). The testing protocols recommend that ratio of total organic carbon (TOC) in sediment to L. variegatus (dry weight) (TOC/Lv) should be no less than 50:1. Occasionally, this recommendation is not followed, especially with sediments having low TOC, e.g., < 1 %. This study evaluated the impacts and resulting biases in the testing results when the recommendation of "no less than 50:1" is not followed. In the study, seven sediments were tested with a series of TOC/Lv ratios that spanned the recommendation. With increasing loading of organisms, growth of the organisms decreased in six of the seven sediments tested. Residues of polychlorinated biphenyls (PCBs) in the L. variegatus were measured in six of the seven sediments tested, and differences in PCB residues among loading ratios across all sediments were small, i.e., +/- 50 %, from those measured at the minimum recommended ratio of 50:1 TOC/Lv. In all sediment, PCB residues increased with increasing loading of the organisms for the mono-, di-, and tri-chloro-PCBs. For tetra-chloro and heavier PCBs, residues increased with increasing loading of organisms for only two of the six sediments. PCB residues were not significantly different between TOC/Lv loadings of 50:1 and mid-20:1 ratios indicating that equivalent results can be obtained with TOC/Lv ratios into the mid-20:1 ratios. Overall, the testing results suggest that when testing recommendation of 50:1 TOC/Lv is not followed, potential biases in the biota-sediment accumulations factors from the sediment-bioaccumulation test will be small. |
语种 | 英语 |
WOS记录号 | WOS:000378000900008 |
来源期刊 | ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY |
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/57619 |
作者单位 | 1.US EPA, Midcontinent Ecol Div, Natl Hlth & Environm Effects Res Lab, Off Res & Dev, Duluth, MN 55804 USA; 2.3 M Co, Cumberland, WI 54829 USA; 3.Wildlife Int, Easton, MD 21601 USA |
推荐引用方式 GB/T 7714 | Burkhard, Lawrence P.,Hubin-Barrows, Dylan,Billa, Nanditha,et al. Sediment Bioaccumulation Test with Lumbriculus variegatus: Effects of Organism Loading[J]. 美国环保署,2016,71(1):70-77. |
APA | Burkhard, Lawrence P..,Hubin-Barrows, Dylan.,Billa, Nanditha.,Highland, Terry L..,Hockett, James R..,...&Norberg-King, Teresa J..(2016).Sediment Bioaccumulation Test with Lumbriculus variegatus: Effects of Organism Loading.ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY,71(1),70-77. |
MLA | Burkhard, Lawrence P.,et al."Sediment Bioaccumulation Test with Lumbriculus variegatus: Effects of Organism Loading".ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 71.1(2016):70-77. |
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