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Lead Complexation by Humic Acids and Their Analogs: A Voltammetric Study
Environments ( IF 3.5 ) Pub Date : 2020-10-26 , DOI: 10.3390/environments7110094
Spencer Steinberg , Vernon Hodge

Differential pulse polarography (DPP) was used to assess the interaction of Pb2+ with various humic acid analogs and several humic acids. DPP analysis demonstrated that the reduction peak maximum (Ep) for Pb2+ shifted to more negative values in the presence of humic acids and humic acid analogs. The observed Ep for Pb2+ in the presence of humic acids and humic acid analogs is influenced by ligand concentration, solution pH and Pb2+ concentration. Shifts in the Ep for Pb2+ are related to the reduction potential and can be rationalized using the Lingane equation.

中文翻译:

腐殖酸及其类似物对铅的络合:伏安法研究

差分脉冲极谱法(DPP)用于评估Pb 2+与各种腐殖酸类似物和几种腐殖酸的相互作用。DPP分析表明,在存在腐殖酸和腐殖酸类似物的情况下,Pb 2+的最大还原峰(E p)移至更多的负值。在腐殖酸和腐殖酸类似物存在下,观察到的Pb 2+的E p受配体浓度,溶液pH和Pb 2+浓度的影响。Pb 2+的E p的变化与还原电位有关,可以使用Lingane方程进行合理化。
更新日期:2020-10-26
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