Anodic Stripping Voltammetry with Pencil Graphite Electrode for Determination of Chromium (III)

International Seminar on Mathematics, Science, and Computer Science Education 2016

数学;自然科学;计算机科学

Wyantuti, S.^1 ; Hafidza, R.A.^1 ; Ishmayana, S.^1 ; Hartati, Y.W.^1

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jln. Raya Bandung-Sumedang km. 21, Jatinangor, Sumedang, West Java

45363, Indonesia^1

关键词: Anodic stripping voltammetry;    Blood glucose level;    Determination of chromiums;    Pencil graphite electrode;    Quantitative determinations;    Stripping voltammetry;    Voltammetric analysis;    Voltammetric methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/812/1/012006/pdf
DOI  :  10.1088/1742-6596/812/1/012006

来源: IOP

【 摘 要 】

Chromium is required as micronutrient that has roles in insulin metabolism and blood glucose level regulation. Chromium (III) deficiency can cause hyperglycemia and glycosuria. However, a high amount of chromium in body can cause allergic reaction, organ damage, and even death because of its toxicity. Chromium is commonly used in steel industries. Simultaneously with the development of industry, the waste disposal that can endanger environment also increased. Therefore, a sensitive and specific analysis method for chromium detection is required. Stripping voltammetry is one of the voltammetric methods that is commonly used for heavy metal analysis due to the very low limit of detection (sub ppb). The present study was conducted to develop an analysis method for chromium (III) determination using pencil graphite electrode. Quantitative determination was performed for chromium (III) which measured at -0.8 to +1.0 V with deposition time for 60 s and 50 mV/s scan rate. Stripping voltammetric analysis of chromium (III) using pencil graphite electrode gave linear range at 12.5 to 75 ppm with limit of detection of 0.31 ppm.