P. Rydchuk, O. Tymoshuk, L. Oleksiv, T. Chaban, V. Matiychuk
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引用次数: 5
摘要
5-羟基亚胺-4-亚胺-1,3-噻唑烷-2-酮被认为是一种新的有机伏安法测定铂的试剂。确定了催化氢电流峰上5-羟基亚胺-4-亚胺-1,3-噻唑烷-2- 1伏安法测定Pt(IV)的最佳条件:背景电解质为0.3 M NaCl,溶液pH为2.0,有机试剂过量浓度为50倍。建立了灵敏的铂(IV)伏安法测定方法(LOD = 4.1·10-9 М)。可测定含量范围包括两个浓度顺序。研究了所开发方法对伴生金属离子的选择性。用“加-求”法在模型解上验证了该方法的准确性。该方法在实际样品分析中得到了认可,即“雪佛兰”汽车废气氧化催化剂。
Voltammetric Determination Of Pt(IV) Using 5-Hydroxyimino-4- Imino-1,3-Thiazolidine-2-One
5-Hydroxyimino-4-imino-1,3-thiazolidine-2-one has been suggested as a new organic reagent for the voltammetric determination of platinum. The optimal conditions of Pt(IV) voltammetric determination using 5-hydroxyimino-4- imino-1,3-thiazolidine-2-one on the peak of catalytic hydrogen currents have been determined: the background electrolyte is 0.3 M NaCl, pH of the solution is 2.0, 50-fold concentration excess of organic reagent. The sensitive method of Pt(IV) voltammetric determination was developed (LOD = 4.1·10-9 М). The range of determinable contents covers two concentration orders. The selectivity of the developed methods have been studied towards concomitant metals ions. The accuracy of the developed method has been tested on model solutions using “added-found” method. The method has been approved during the analysis of a real sample, viz. the catalyst for oxidation of exhaust gases of the car “Chevrolet”.
期刊介绍:
The journal "Methods and objects of chemical analysis" is peer-review journal and publishes original articles of theoretical and experimental analysis on topical issues and bio-analytical chemistry, chemical and pharmaceutical analysis, as well as chemical metrology. Submitted works shall cover the results of completed studies and shall make scientific contributions to the relevant area of expertise. The journal publishes review articles, research articles and articles related to latest developments of analytical instrumentations.