沉积微生物和生物膜提高摇蚊属昆虫(双翅目:摇蚊科)对毒死蜱的生物利用率 |
| |
引用本文: | Anna Lundqvist,Willem Goedkoop,樊兴明,周霞萍.沉积微生物和生物膜提高摇蚊属昆虫(双翅目:摇蚊科)对毒死蜱的生物利用率[J].腐植酸,2009(4):28-36. |
| |
作者姓名: | Anna Lundqvist Willem Goedkoop 樊兴明 周霞萍 |
| |
作者单位: | 1. 瑞典农科大学环境评估部,乌普萨拉,75007 2. 华东理工大学资源与环境工程学院,上海,200237 |
| |
摘 要: | 本试验定量研究了不同来源的有机物(腐植酸、无菌沉积物、沉积物和微生物提取物)对摇蚊属幼虫的疏水性农药毒死蜱0,0-二乙基-0-(3、5、6-三氯-2-吡啶基)硫代磷酸酯]生物利用率的影响。在最后两步处理中,加入14C毒死蜱前可允许生物膜增殖。毒死蜱的累积量在浸渍25h和净化21h后分别定量检测。幼虫中的毒死蜱累积量在用微生物提取物(4424-79μg/kgww的幼虫)处理中达到2倍,在用沉积物(371±33μ.g/kg)处理中达到1.7倍。净化后,幼虫组织中毒死蜱的累积量甚至表现出更大的差别,用微生物提取物(218±21μg/kg)处理后组织浓度达到3.1倍,用沉积物(156±35μg/kg)处理达到2,2倍;而用腐植酸和无菌沉积物处理后毒死蜱的累积量没有产生太大差别。这些结果表明:活体微生物和生物膜可以通过创造微生物环境和为幼虫提供食物,显著提高摇蚊属昆虫对毒死蜱的生物利用率。
|
关 键 词: | 生物利用率 生物膜 EPS 疏水污染物 腐植酸 水生生物毒性 浸渍途径 有机磷酸酯农药 |
Sediment Microbes and Biof ilms Increase the Bioavailability of Chlorpyrifos in Chironomus Riparius(Chironomidae, Diptera) |
| |
Authors: | Anneli Widenfalk Anna Lundqvist Willem Goedkoop Fan Xingming Zhou Xiaping |
| |
Affiliation: | Anneli Widenfalk1,Anna Lundqvist1,Willem Goedkoop1 write,Fan Xingming2,Zhou Xiaping2 translate (1 Department of Environmental Assessment,Swedish University of Agricultural Sciences,Uppsala,75007 2 East China University of Science and Technology,Shanghai,200237) |
| |
Abstract: | In a microcosm study, the importance of different sources of organic matter(humic acids, sterile sediment, sediment, and a microbial extract) for the bioavailability of the hydrophobic pesticide chlorpyrifos to Chironomus riparius larvae was quantified. In the last two treatments biofilms were allowed to grow before 14C-chlorpyrifos addition. Chlorpyrifos accumulation was quantified after 25 h of exposure and after 21 h of depuration. Larval accumulation was twice as high in the microbial extract treatment(... |
| |
Keywords: | EPS |
本文献已被 CNKI 维普 万方数据 等数据库收录! |