Voltammetric Method for Manganese Analysis in Indian Traditional Leafy Vegetables and Medicinal Plants Collected Around Tirupati Town, a Famous Pilgrim Center in India: The Catalytic Hydrogen Wave (CHW) Technique

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作者
S. Kanchi
K. Saraswathi
N. Venkatasubba Naidu
机构
[1] Sri Venkateswara University,Department of Chemistry
来源
Food Analytical Methods | 2012年 / 5卷
关键词
D.C. polarography; Catalytic hydrogen wave (CHW); Manganese(II); Ammonium piperidine dithiocarbamate (Amm Pip-DTC); Ammonium morpholine dithiocarbamate (Amm Mor-DTC); Differential pulse polarography (DPP); Leafy vegetables and medicinal plants;
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摘要
Cost-effective, rapid, sensitive, and novel catalytic hydrogen wave technique (CHW) was developed for the analysis of manganese(II) in NH4Cl–NH4OH medium at pH 6.2 and produced catalytic hydrogen waves at −0.60 and −0.56 V Vs SCE with ammonium piperidine dithiocarbamate and ammonium morpholine dithiocarbamate, respectively, in various leafy vegetables and medicinal plants collected around Tirupati, Chittoor District, Andhra Pradesh which is one the famous pilgrim centers in India. Different optimal parameters like effect of pH, supporting electrolyte (NH4Cl–NH4OH) concentration, ligand and metal ion concentrations, and effect of adverse ions on peak height were studied to improve the sensitivity, selectivity, and detection limits CHW technique. This technique was compared in terms of Student t test and variance ratio f test with differential pulse polarography (DPP) method. The technique was applied for the analysis of manganese(II) in leafy vegetables and medicinal plants. The results obtained are in good agreement with DPP.
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页码:69 / 81
页数:12
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