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- W2051287708 abstract "Abstract This paper describes the development of an electrochemical sensor coupled to flow injection analysis system for the detection of pesticides. The proposed sensor was prepared using a carbon paste electrode modified with hemin and nickel (II) 1,48,11,15,18,22,25-octabutoxy-29H, 31H-phthalocyanine complex as possible catalysts P450 enzyme and graphene oxide in order to improve the sensitivity of the sensor. In the first place, we used the cyclic voltammetry in a response range of −0.2 to 1 V to monitor the electrochemical response of each pesticide. In optimized conditions, an amperometric study of the proposed sensor was conducted applying the potential of 0.45 and 0.8 V for the redox reaction of carbofuran-phenol and diuron. The system showed a linear response in a concentration range between 5.0 × 10 −6 and 1.4 × 10 −4 and 5.0 × 10 −5 and 1.0 × 10 −3 mol L −1 and detection limit of 1.7 × 10 −6 and 2.0 × 10 −5 mol L −1 for carbofuran and diuron, respectively. The proposed sensor was applied in soil and carrot samples and the results obtained in the recovery study were close to 100%. The reliability of the proposed sensor was confirmed after comparing the results with those obtained in the comparative method (HPLC)." @default.
- W2051287708 created "2016-06-24" @default.
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- W2051287708 date "2014-10-01" @default.
- W2051287708 modified "2023-10-03" @default.
- W2051287708 title "Determination of carbofuran and diuron in FIA system using electrochemical sensor modified with organometallic complexes and graphene oxide" @default.
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- W2051287708 doi "https://doi.org/10.1016/j.jelechem.2014.08.025" @default.
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