Release of anthracene from estuarine sediments by crab bioturbation effects

被引：0
作者：
Nan Sun
Yanli Chen
Lixin Ma
Shuqin Xu
机构：
[1] Northeast Agricultural University,School of Water Conservancy and Civil Engineering
[2] Department of Environmental Protection of Heilongjiang Province,undefined
来源：
Environmental Science and Pollution Research | 2017年 / 24卷
关键词：
Bioturbation; Anthracene; Release; Sediment; Crab;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
To investigate bioturbation effects on anthracene (Ant) release from sediments to the overlying water, indoor microcosms were developed. Naturally contaminated estuarine sediments were exposed to the crab Helice tiensinensis over 70 days and compared with sediments with no crab. Bioturbation by crab could significantly increase the release of both particulate and dissolved Ant. The releases of particulate Ant with bioturbation treatments were 2.3–11.7 times higher than in the control treatments. However, the releases of dissolved Ant with bioturbation treatments were 1.7–3.7 times higher than in the control treatments. The ratio of particulate Ant/total Ant varied from 89 % to 98 % in the bioturbation treatments, which was significantly higher than in the control treatments. These results indicate that crab bioturbation significantly enhanced both particulate and dissolved Ant release from sediment, but the particulate Ant is the predominant process.
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页码：1890 / 1897
页数：7
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