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• W2912805603 abstract "The study claims to exploit nanomaterials based fast sensing strategy at liquid-liquid interface for pesticide residues in short analytical time. Herein, a rapid extractive spectrometric platform for the trace levels determination of methamidophos (MET) in water has been established. It was based on the room temperature formation of nano-gold particles (AuNPs(org)) in organic phase (CHCl3) by ascorbic acid as a reducing agent and hexadecyl trimethyl ammonium bromide (HTAB) as a phase transfer agent at pH 10–11. The method employs response surface methodology (RSM) based on central composite design (CCD) for selecting appropriate conditions for optimal reagent functioning and liquid microextraction pretreatment factors. Traces of MET influences the surface plasmon absorbance of the formed AuNPs(org) at λmax = 520 nm with consequent lowering of the color. The stability for the formed AuNPs(org), influence of temperature (298–338 K), TEM and EDS analysis were carefully performed. Under the optimized CCD experimental conditions, the obtained linear calibration range was 0.01–0.25 μg mL−1 with a limit of detection (LOD) 3.30 × 10−3 μg mL−1 and limit of quantification (LOQ) 0.011 μg mL−1. A relative standard deviation (RSD) of 2.29 (n = 5) at 0.20 μg mL−1 of MET was obtained. The developed method was successfully applied for the analysis of trace concentrations of MET in environmental water samples with satisfactory recovery percentages (95.14 ± 3.99–103.00 ± 2.78). The suitability of the proposed method was further validated in terms of student t- and F tests at 95% confidence." @default.
• W2912805603 created "2019-02-21" @default.
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• W2912805603 date "2019-05-01" @default.
• W2912805603 modified "2023-09-26" @default.
• W2912805603 title "A fast room temperature single step nano-gold synthesis in organic phase for rapid detection of methamidophos in water" @default.
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• W2912805603 doi "https://doi.org/10.1016/j.microc.2019.02.009" @default.
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