Efficiency of Experimental Rice (Oryza sativa L.) Fields in Mitigating Diazinon Runoff Toxicity to Hyalella azteca

被引：0
|
作者：
Matthew T. Moore
Richard E. Lizotte
Robert Kröger
机构：
[1] USDA-ARS National Sedimentation Laboratory,Center for Water and Wetland Resources
[2] The University of Mississippi Field Station,Department of Wildlife and Fisheries
[3] Mississippi State University,undefined
来源：
Bulletin of Environmental Contamination and Toxicology | 2009年 / 82卷
关键词：
Wetlands; Organophosphate toxicity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This study assessed the viability of using planted, mature rice fields in mitigating diazinon (an organophosphate insecticide) runoff toxicity using aqueous 48 h Hyalella azteca whole effluent toxicity bioassays. Rice fields decreased diazinon concentrations 80.1%–99.9% compared with 10.8% in the unvegetated field control. H. azteca survival responses coincided with observed diazinon concentrations. Estimated LC50 effects dilutions (%) ranged from 1.15 to 1.47 for inflow samples and 1.66 (unvegetated), 6.44 (rice field A), and >100 (rice field B) outflow samples. Decreases in inflow versus outflow aqueous toxicity were 77.1%–100% in rice fields compared with 18.7% in the unvegetated field.
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页码：777 / 780
页数：3
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