A Simple and Safe Spectrophotometric Method for Iodide Determination
A Simple and Safe Spectrophotometric Method for Iodide Determination
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一种简单、安全的分光光度法测定碘化物
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Asdauna Asdauna
中科院分区：
文献类型：
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作者：
Hermin Sulistyarti;A. Atikah;Q. Fardiyah;Sita Febriyanti;Asdauna Asdauna
为了实践绿色化学，基于蓝色淀粉-碘络合物的形成，成功地建立了一种简便、安全的测定碘的分光光度方法。在加入淀粉溶液之前，先将碘化物氧化成碘，然后在615 nm波长处直接分光光度测定蓝色S酒石碘络合物。从灵敏度和分析时间两个方面对氧化剂的种类、反应时间、氧化剂浓度和溶液pH等化学参数进行了优化。在碘酸盐氧化剂的摩尔比为1：3，反应时间为5min，溶液pH为5的最佳条件下，方法的线性范围为5~4 0 mg/L碘化物，相关系数R2为0 9889。该技术提供了一种简便、安全、准确、快速的碘测定方法，在碘样品监测中具有广阔的应用前景。
In order to practice green chemistry, a simple and safe spectrophotometric method for iodide determination has been successfully developed based on the formation of a blue starch-iodine complex . Iodide was oxidized to form iodine prior to the addition of a starch solution, and the blue s tarch-iodine complex was directly detected spectrophoto-metrically at a wavelength of 615 nm. The chemical parameters, such as type, reaction time, as well as concentration of oxidizing agents and solution pH were optimized with respect to sensitivity and analysis time. The method showed optimum results under iodate oxidant with a mol ratio of IO 3 - :I - =1:3, reaction time of 5 minutes, and solution pH of 5. Under the se optimum conditions, the method showed linierity measurements from 5-4 0 mg/L iodide with a correlation ( R 2 ) of 0.9 889 . This technique offers a simple, safe, accurate, and relatively fast method for iodide determination, which is prospective for monitoring iodide samples.