Persistence and Stability of Teflubenzuron and Diflubenzuron When Associated to Organic Particles in Marine Sediment

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• 作者：Ole B. Samuelsen
• 关键词：Flubenzurons ; Stability ; Persistence ; Marine sediment
• 刊名：Bulletin of Environmental Contamination and Toxicology
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：96
• 期：2
• 页码：224-228
• 全文大小：350 KB
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• 作者单位：Ole B. Samuelsen (1) <br><br>1. Institute of Marine Research, P.O. Box 1870, 5817, Nordnes, Bergen, Norway <br>
• 刊物主题：Pollution, general; Environmental Health; Ecotoxicology; Soil Science & Conservation; Environmental Chemistry; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution;
• 出版者：Springer US
• ISSN：1432-0800

文摘

The persistence and stability of the oral administered anti salmon-lice drugs teflubenzuron and diflubenzuron were tested when associated to organic material as faecal particles from Atlantic salmon and medicated food pellets. This laboratory study was performed in seawater under aerobic conditions, at 7°C in the dark and showed that both compounds were remarkably persistent and stable since no significant reduction in the concentrations of flubenzurons in sediment were seen after 24 weeks. Therefore neither chemical or microbial degradation nor outwashing seems to be important pathways for these drugs to disappear from sediment under fish farms. Thus, it is more likely that the decrease of flubenzurons from marine sediments described in field investigations is caused by either bioturbation, resuspension of organic particles or a combination of these. Keywords Flubenzurons Stability Persistence Marine sediment