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首页> 外文期刊>American journal of analytical chemistry >Imprinted Polymer Inclusion Membrane BasedPotentiometrie Sensor for Determination andQuantification of Diethyl Chlorophosphate in NaturalWaters
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Imprinted Polymer Inclusion Membrane BasedPotentiometrie Sensor for Determination andQuantification of Diethyl Chlorophosphate in NaturalWaters

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摘要

Biomimetic potentiometrie sensor for the determination of diethyl chlorophosphate was developed using imprinted polymer inclusion membrane strategy. Semi-covalent imprinted and non-imprinted polymer particles were synthesized and found that non-imprinted polymer inclusion membrane was unstable in contrast to imprinted polymer inclusion membrane in determination and quantification of diethyl chlorophosphate. Imprinted polymer inclusion membrane based sensor found to be pH dependant with a 5 min equilibrium response time at pH = 10.5 and linearly responds to diethyl chlorophosphate in the concentration range of 1 x 10~(-9) to 1 x 10~(-4) and 1 x 10~(-4) to 1 x 10~(-2) mol·L~(-1) with a detection limit of 1 x 10~(-9) mol-L~(-1) (0.17 ppb). It was found that diethyl chlorophosphate response was selective against various selected interferents like pinacolyl methylphosphonate, dimethyl methyl phosphonate, methylphosphonic acid, Phorate and 2,4-D. The developed sensor was found to be stable for 3 months and can be reusable more than 30 times without loosing sensitivity. The developed sensor was successfully applied for the determination of diethyl chlorophosphate in natural waters.

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