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在柠檬酸介质中：Ｖ５＋强烈地催化ＫＢｒＯ３氧化甲基红的反应，据此建立了催化动力学光度法测定痕量Ｖ５＋的新方法。本方法的检出限为０．１２ｎｇ／ｍｌ，测定范围为０～６．４ｎｇ／ｍｌ，并用本法对地下水进行了分析。
In citric acid medium: V5 + strongly catalyzes the reaction of methyl red of KBrO3, and a new method for the determination of trace V5 + by catalytic kinetic spectrophotometry was established. The detection limit of this method is 0.12ng / ml, the determination range is 0 ~ 6.4ng / ml, and groundwater is analyzed by this method.