在碱性高锰酸钾氧化κ-卡拉胶过程中形成短寿命的五价锰酸盐和六价锰酸盐瞬态物种的分光光度证据。
Spectrophotometric evidence for the formation of short-lived hypomanganate(V) and manganate(VI) transient species during the oxidation of K-carrageenan by alkaline permanganate.
作者信息
Ahmed Gamal A, Fawzy Ahmed, Hassan Refat M
机构信息
Department of Chemistry, Faculty of Science, Assiut University, Assiut 71516, Egypt.
出版信息
Carbohydr Res. 2007 Jul 23;342(10):1382-6. doi: 10.1016/j.carres.2007.03.022. Epub 2007 Mar 28.
Spectrophotometric detection of the formation of short-lived hypomanganate(V), [KCAR-Mn(V)O43-], and manganate(VI), [KCAR-Mn(VI)O42-], intermediates has been confirmed through the oxidation of K-carrageenan (KCAR) by potassium permanganate in alkaline solutions of pH's >or= 12 using a conventional spectrophotometer. The short-lived transient species were characterized and a mechanism consistent with experimental observations is suggested.
通过使用传统分光光度计，在pH≥12的碱性溶液中，高锰酸钾氧化κ-卡拉胶（KCAR），已证实分光光度法可检测短寿命的亚锰酸盐（V）[KCAR-Mn(V)O₄³⁻]和锰酸盐（VI）[KCAR-Mn(VI)O₄²⁻]中间体的形成。对这些短寿命的瞬态物种进行了表征，并提出了一种与实验观察结果一致的机制。
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