Detecting cadmium(II) by using coal extracted from argan oilcake waste (Argania spinosa) as modifier of carbon paste electrode.

IF 2.4 Q3 CHEMISTRY, MULTIDISCIPLINARY Moroccan Journal of Chemistry Pub Date : 2021-10-31 DOI:10.48317/IMIST.PRSM/MORJCHEM-V9I3.28018

K. Abbi, L. Hermouch, Y. Elhamdouni, N. Labjar, A. Skalli, I. Merimi, F. Jeffali, M. E. Mahi, El M. Lotfia, S. Hajjaji

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Abstract

The detection of Cd 2+ ions was studied by cyclic voltammetry (CV) and Square Wave Voltammetry (SWV). This method is mainly based on the accumulation of Cd 2+ ions on the surface of a carbon paste electrode modified by coal extract from argan oilcake waste (AC-CPE). To evaluate the detection performance of AC-CPE against Cd 2+ ions, an optimization study was carried out to determine the following optimal conditions, pH=5, preconcentration time of 120s, and deposition potential of 1.2V. Under these optimal conditions, a linear relationship between current peak intensity and concentration has been defined over a concentration range from 5.10 -4 to 5.10 -7 M; with detection limit (DL, 3 б) of 3.04x10 -6 M. An analytical application of the electrode in a real matrix, tap water, was performed and revealed good detection performance of AC-CPE. These results show that the AC-CPE can be used as an excellent detector of Cd 2+ ions in aqueous solution

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利用从摩洛哥坚果油饼废料中提取的煤作为碳糊电极的改性剂检测镉。

采用循环伏安法(CV)和方波伏安法(SWV)研究了镉离子的检测。该方法主要是基于用坚果油饼废渣(AC-CPE)的煤萃取物修饰的碳糊电极表面的cd2 +离子的积累。为了评价AC-CPE对cd2 +离子的检测性能，进行了优化研究，确定了最佳条件:pH=5，预富集时间为120s，沉积电位为1.2V。在最佳条件下，电流峰值强度与浓度在5.10 -4 ~ 5.10 -7 M浓度范围内呈线性关系;检出限(DL, 3)为3.04 × 10 -6 m，对实际基质自来水进行了分析，结果表明AC-CPE具有良好的检测性能。这些结果表明，AC-CPE可以作为水溶液中cd2 +离子的优良检测器

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来源期刊

Moroccan Journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

3.40

自引率

9.10%

发文量