Development of Bio-inspired Composite Materials for the Detection of Traces of Silver Present in Water: Use of Taguchi Methodology to Design Low-cost Carbon Paste Electrodes,Electroanalysis

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Development of Bio-inspired Composite Materials for the Detection of Traces of Silver Present in Water: Use of Taguchi Methodology to Design Low-cost Carbon Paste Electrodes
Electroanalysis ( IF 2.7 ) Pub Date : 2021-06-09 , DOI: 10.1002/elan.202100030
Jaime Garcia-Melendrez ₁ , Walter Warren-Vega ₁ , Ana Zarate-Guzmán ₂ , Francisco Carrasco-Marín ₃ , Linda González-Gutiérrez ₄ , Luis Romero-Cano ₅

Affiliation

Carbon Paste Electrodes (CPE) modified with Grapefruit-Peels (GP) functionalized with Urea (GPU) and, Melamine (GPM) were designed for the detection of Ag⁺ in water. Taguchi L₉ methodology was used to determine the optimal graphite-Active material ratio. The best electrochemical response was for CPE-GPU with an 80 : 20 ratio. The results obtained showed a linear detection range between 0.5 to 28 μg L⁻¹, with a detection limit of 0.73 μg L⁻¹ and a limit of quantification of 1.04 μg L⁻¹. Attributable to CPE-GPU characteristics: electroactive surface area 0.175 cm², roughness factor 3.87, resistance 0.09 Ω and, mostly −NH₂ groups on its surface. The composite material offers a viable option to be used for the determination of silver traces in situ in industrial processes.

中文翻译：

开发用于检测水中痕量银的仿生复合材料：使用田口方法设计低成本碳糊电极

使用尿素 ( GPU ) 和三聚氰胺 ( GPM )功能化的葡萄柚皮 ( GP ) 改性的碳糊电极 ( CPE )设计用于检测水中的 Ag ⁺。Taguchi L ₉方法用于确定最佳石墨-活性材料比率。最好的电化学响应是比例为 80:20 的CPE-GPU。所得结果显示线性检测范围在0.5至28 μg L ^{-1 之间}，检测限为0.73 μg L ^-1，定量限为1.04 μg L ^-1。归因于CPE-GPU特性：电活性表面积为 0.175 cm ²，粗糙度系数为 3.87，电阻为 0.09 Ω，并且其表面大部分为 -NH ₂基团。该复合材料提供了一种可行的选择，可用于在工业过程中原位测定银痕量。

更新日期：2021-08-13

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