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

被引：3
|
作者：
Moore, Matthew T. [1 ]
Lizotte, Richard E., Jr. [1 ]
Kroger, Robert [2 ]
机构：
[1] USDA ARS, Natl Sedimentat Lab, Oxford, MS 38655 USA
[2] Univ Mississippi, Field Stn, Ctr Water & Wetland Resources, Abbeville, MS 38601 USA
来源：
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY | 2009年 / 82卷 / 06期
关键词：
Wetlands; Organophosphate toxicity; Hyalella azteca; CONSTRUCTED WETLANDS; PESTICIDE;
D O I：
10.1007/s00128-009-9696-6
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
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.
引用
收藏
页码：777 / 780
页数：4
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