Determination of Iodine Ion by Differential Pulse Anodic Stripping Voltammetry

被引：0

作者：

Tian, Yuan ^{[1
]}

Song, Wen-Bo ^{[1
]}

Jiang, Yan-Xia ^{[1
]}

Liu, Ying ^{[1
]}

Chen, Xu ^{[1
]}

Xu, Hong-Ding ^{[1
]}

机构：

[1] Department of Chemistry, Jilin University, Changchun, 130023, China

来源：

Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities | / 20卷 / 01期

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摘要：

I- may be oxidized to form IO-3. On this basis the determination of iodine ion by differential pulse anodic stripping voltammetry(DPAS) on Pt ball work electrode was investigated. For overcoming the absorption of IO-3, the electrode was washed by electrochemical method (at + 1.3 V) for 120 s. This method can detect 5. 00 × 10-7 mol/L I- in 0.1 mol/L KH2PO4-K2HPO4 buffer solution(pH=4). A good proportionality between the peak current of DPAS and iodine ion concentration in the range of 5. 00 × 10-7 [similar to] 1. 50 × 10-5 mol/L has been observed. This method was successfully applied to determination of iodine in kelp and edible salt.

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页码：30 / 31