کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7639883 | 1494852 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sensing of formetanate pesticide in fruits with a boron-doped diamond electrode
ترجمه فارسی عنوان
سنجش آفت کش فرتیتانات در میوه ها با الکترود الماس بر پایه بور
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
This study describes the development of a simple and accurate methodology for carbamate pesticide formetanate (FMT) analysis in fruits based on the use of a boron-diamond doped electrode (BDDE) cathodically pretreated and on the forward component of the current of square-wave voltammetry (SWV). FMT exhibits a well-defined irreversible oxidation process, which reaction mechanism is diffusion-controlled, involves the participation of one electron and is influenced by the electrolyte pH. However, protonation does not participate in the rate-determining step in the redox process. The optimum experimental and voltammetric conditions were pHâ¯7.0 (0.04â¯molâ¯Lâ1 Britton-Robinson buffer), pulse potential frequency of 20â¯sâ1, amplitude of the pulse of 25â¯mV, and height of the potential step of 3â¯mV. Under the optimum conditions, calibration curve was linear from 4.98â¯Ãâ¯10â7 to 1.70â¯Ãâ¯10â5â¯molâ¯Lâ1 FMT with a limit of detection of 3.7â¯Ãâ¯10â7â¯molâ¯Lâ1. FMT sensing was performed in different fruits (mango and grape). Recoveries ranged from 95.2â¯Â±â¯2.8 to 104.0â¯Â±â¯3.5% for mango and 96.5â¯Â±â¯2.5 to 105.2â¯Â±â¯3.5% for grape proving the accuracy and precision of the electroanalytical methodology. The attained data validated the applicability of the developed approach for FMT quantification in fruits.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 142, November 2018, Pages 24-29
Journal: Microchemical Journal - Volume 142, November 2018, Pages 24-29
نویسندگان
Francisco Wirley Paulino Ribeiro, Camila Pinheiro Sousa, Simone Morais, Pedro de Lima-Neto, Adriana Nunes Correia,