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首页> 外文期刊>Electroanalysis >Application of L-dopa as an electroactive ligand for indirect determination of aluminum in biological samples by differential pulse voltammetry
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Application of L-dopa as an electroactive ligand for indirect determination of aluminum in biological samples by differential pulse voltammetry

机译：L-多巴作为电活性配体在微分脉冲伏安法间接测定生物样品中铝中的应用

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摘要

A simple indirect method making use of 3,4-dihydroxyphenylalanine (L-dopa) as an electroactive complexation ligand for the determination of aluminum in biological samples at neutral pH on glassy carbon working electrode with differential pulse voltammetry (DPV) is reported. This method relies on the linear decrease of the DPV anodic peak current of L-dopa with the concentration of aluminum added. Under the optimum experimental conditions (pH 7.0, 0.08 M NH4Ac buffer solution, and 6 x 10(-4) M L-dopa), the linear range is 1-16 x 10(-6) M Al-III. The detection limit is 8.9 x 10(-7) M and the relative standard deviation for 8.0 x 10(-6) M Al-III is 3.9% (n = 8). Interference of foreign species relating to biological system has been inspected. The method has been applied to the measurement of aluminum in biological samples such as urine. hair. pork organs and consumption like drinking waters and synthetic renal dialysate. The possibility of the future application for in vivo detection of aluminum is also discussed. [References: 45]
机译：报道了一种简单的间接方法，该方法使用3,4-二羟基苯丙氨酸（L-多巴）作为电活性络合配体，通过差分脉冲伏安法（DPV）在中性pH值下测定玻碳工作电极上生物样品中的铝。该方法依赖于左旋多巴的DPV阳极峰值电流随铝浓度的线性下降。在最佳实验条件下（pH 7.0、0.08 M NH4Ac缓冲溶液和6 x 10（-4）M L-多巴），线性范围为1-16 x 10（-6）M Al-III。检出限为8.9 x 10（-7）M，8.0 x 10（-6）M Al-III的相对标准偏差为3.9％（n = 8）。已经检查了与生物系统有关的外来物种的干扰。该方法已应用于生物样品（如尿液）中铝的测量。头发。猪肉器官以及诸如饮用水和合成肾透析液的消费。还讨论了体内检测铝的未来应用的可能性。 [参考：45]

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