Spectrophotometric Determination of Ru(IV) using 5-Hydroxyimino-4-imino-1,3-thiazolidin-2-one as a Novel Analytical Reagent

• Main Authors: Oleksandr Tymoshuk, Lesia Oleksiv, Liudmyla Khvalbota, Taras Chaban, Ihor Patsay
• Format: Article
• Language: English
• Published: Slovenian Chemical Society 2019-02-01
• Series: Acta Chimica Slovenica
• Subjects: spectrophotometry; ruthenium(IV); 5-hydroxyimino-4-imino-1,3-thiazolidone-2-one; azolidones.
• Online Access: https://journals.matheo.si/index.php/ACSi/article/view/4448
• ISSN: 1318-0207; 1580-3155

The interaction of Ru(IV) ions with a novel analytical reagent – 5-hydroxyimino-4-imino-1,3-thiazolidone-2-one, by spectrophotometric method was investigated. The complex is formed at pH 5.0 in acetate buffer medium after heating in the boiling water bath (~371 K) for 25 min. The complex has maximum absorption at 350 nm and is stable for 24 h. Beer’s law is valid over the concentration range of 0.5-6.1 µg mL-1 for Ru(IV). The molar absorptivity at λ = 350 nm is 6.21×103 L mol-1 cm-1. The limit of detection of this method is 0.2 µg mL-1. The interfering effect of various cations and anions on the spectrophotometric determination of the Ru(IV) were investigated. The proposed method was successfully applied to the determination of Ru(IV) in alloys.