کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6662445 | 463213 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Potentiometric determination of Diclofenac using an ion-selective electrode prepared from polypyrrole films
ترجمه فارسی عنوان
تعیین پتانسیومتری دیکلوفناک با استفاده از یک الکترودهای انتخابی یونی تهیه شده از فیلم های پلی پیلر
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The present work reports preparation and characterization of a new potentiometric sensor for determination of Diclofenac (DCF) based on doped polypyrrole films. The response mechanism for the proposed sensor is based on incorporation of DCF anion into polypyrrole film during polymer electrochemical synthesis in order to form a membrane with selective potentiometric response for the dopant ion. It was observed that the sensor performance is dependent of the measurement parameters used in the synthesis process realized under galvanostatic conditions. So, using the best set of experimental conditions (electric current density of 0.045 mA cmâ2 and electric charge of 35 mC) the sensor exhibited a linear dynamic response in the concentration range from 3.1 Ã 10â4 to 1.1 Ã 10â2 mol Lâ1 of DCF with a slope 48.2 mV decâ1 and a limit of detection of 1.9 Ã 10â4 mol Lâ1. The method was successfully applied in the determination of DCF in pharmaceutical commercial samples with good correlation with result provided by official method. The effect of interference species on potentiometric response and morphologic characterization using microscopy of atomic force (AFM) has been also realized.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 732, 15 October 2014, Pages 11-16
Journal: Journal of Electroanalytical Chemistry - Volume 732, 15 October 2014, Pages 11-16
نویسندگان
Michelle C. Oliveira, Eduardo H. Bindewald, Luiz H. Jr., Márcio F. Bergamini,