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Title: Spectrophotometric study of interaction of o-methylphenyl thiourea with iridium(III) and development of a precise determination method from hydrochloric acid media
Authors: Kuchekar, Shashikant R
Pulate, Shivaji D
Shelar, Yogesh S
Han, Sung H
Keywords: Iridium;o-Methylphenyl thiourea;Spectrophotometry;Synthetic mixtures
Issue Date: Mar-2014
Publisher: NISCAIR-CSIR, India
Abstract: A spectrophotometric determination of iridium(III) is studied using o-methylphenyl thiourea (OMPT). Trivalent iridium has been determined spectrophotometrically as its 1:1 [iridium(III):OMPT] complex in aqueous hydrochloric acid media (0.6 M). The complex exhibits maximum absorption from 512 nm to 522 nm with molar absorptivity 0.663 × 103 L mol-1 cm-1 and sandell’s sensitivity 0.289 µg of iridium(III) cm-2 ; beer’s law is obeyed up to 300 µg/mL. The relative standard deviation for ten replicate samples at 40 µg/mL level of iridium(III) is found to be 0.54 and the limit of detection of the method is 0.018 µg/mL. Iridium(III)-OMPT complex is found stable for more than 8 days.
Page(s): 120-126
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.21(2) [March 2014]

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