Johar G S, Agarwala U
Department of Chemistry V.S.S.D. College Kanpur, India.
Talanta. 1970 Apr;17(4):355-9. doi: 10.1016/0039-9140(70)80226-0.
A simple and rapid method is described for the gravimetric determination of ruthenium(III) with two new isomeric reagents, m-and p-phenylene-di(1-tetrazoline-5-thione). Solutions containing milligram amounts of ruthenium(III)on treatment with the acetone or alcohol solutions of the reagents at pH 5.5-7.0 give a quantitative yield of an intensely green insoluble 1:1 complex which can be easily filtered off and dried at 110-115 degrees . Amounts of ruthenium down to 0.5 mg can be determined with fairly good accuracy and precision. Even large amounts of rhodium do not cause any interference. The following cations interfere: Pd(II), Pt(IV), Au(III), Ir(IV), Bi, Fe(III), Cu(II), Hg(I), Hg(II), Pb, Cd, T1(I) and Ag.
描述了一种使用两种新的同分异构体试剂间苯二（1-四唑啉-5-硫酮）和对苯二（1-四唑啉-5-硫酮）重量法测定钌（III）的简单快速方法。含有毫克量钌（III）的溶液，在pH 5.5 - 7.0下用试剂的丙酮或醇溶液处理后，会定量生成一种深绿色不溶性1:1络合物，该络合物可轻松过滤并在110 - 115摄氏度下干燥。低至0.5毫克的钌量能够以相当高的准确度和精密度测定。即使大量的铑也不会产生任何干扰。以下阳离子会产生干扰：钯（II）、铂（IV）、金（III）、铱（IV）、铋、铁（III）、铜（II）、汞（I）、汞（II）、铅、镉、铊（I）和银。
