The Migration and Transformation of Pyrethroids in Coastal Sedimentary Environment

Shuai Jie Wang; Nan Nan Di; Jian Zheng Song

doi:10.4028/www.scientific.net/AMR.610-613.3222

Paper Titles

Simultaneous Adsorption of Trichloroethylene and Cadmium on Attapulgite in the Groundwater
p.3202

Analysis of the Environmental Benefits of Organic Agriculture
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Preliminary Discussion on the Modification of Ecological Footprint Model
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The Research on the Impact Factors of Low-Quality Stands Soil Respiration after Different Transformations in Greater Higgnan Mountains
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The Migration and Transformation of Pyrethroids in Coastal Sedimentary Environment
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Effects of Five Kinds of Antibiotics on the Damage of Prorocentrum minimum
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Changes in the Growth, Physiology and Biochemistry of Alexandrium tamarense under Ulva pertusa Kjellman Stress and UV-B Radiation
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Research on the Influence of Reclamation to the Marine Ecological Environment – Taking Lianyun New City Constructing as an Example
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The Problems of Wetlands in our Country and the Researches
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 610-613The Migration and Transformation of Pyrethroids in...

The Migration and Transformation of Pyrethroids in Coastal Sedimentary Environment

Abstract:

Increasing use of pyrethroid insecticides in tidal farms has resulted in the severe pollution of coastal water environment and sedimentary environment. In this work, the migration and transformation of three pyrethroid insecticides, fenpropathrin, cypermethrin and deltamethrin in Bohai coastal zone were studied. The results showed that the adsorption of pyrethroids on the coastal sediments matched pseudo-second-order kinetics and the chemical adsorption played a major role. The degradation of three pyrethroids included chemical degradation and biological degradation. The chemical degradation had predominance function at the initial 14 hours, but the biological degra- dation effect was increasing continuously in the transformation process, so that the proportion of biological degradation in total degradation reached about 68% at 110h. M-phenoxyphenyl-acetonitril was identified as the stable degradation product by GC-MS.

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Periodical:

Advanced Materials Research (Volumes 610-613)

Pages:

3222-3225

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.610-613.3222

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Online since:

December 2012

Authors:

Shuai Jie Wang, Nan Nan Di, Jian Zheng Song

Keywords:

Adsorption, Degradation, Pyrethroids, Sediment

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