Abstract
Propericiazine (PPC) is proposed as a new sensitive and selective reagent for the spectrophotometric determination of microgram amounts of osmium. PPC forms an orange-red colored species with osmium(VIII) or osmium(VI) instantaneously at room temperature in 6 M hydrochloric acid medium. The orange-red species exhibits maximum absorbance at 511 nm. Beer′s law is valid over the concentration range 0.1–8.0 ppm for osmium(VIII) and 0.20–10 ppm for osmium(VI). Sandell’s sensitivity of the reaction is 9.4 ng/cm2 for osmium(VIII) and 13.5 ng/cm2 for osmium(VI). The effects of time, temperature, acidity, order of addition of reagents, reagent concentration and diverse ions are investigated. The application of the proposed method in the determination of osmium content in synthetic syserkite mineral has been explored.
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Acknowledgements
The author thanks the INSA, New Delhi for financial assistance and Dr L. Julou and J. Molle of Rhone-Poulenc Centre, Nicolas Grillet, Paris, France, for the generous supply of pure PPC.
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Gowda, T.A. (2014). Propericiazine as a Reagent for the Spectrophotometric Determination of Osmium. In: Gupta Bhowon, M., Jhaumeer-Laulloo, S., Li Kam Wah, H., Ramasami, P. (eds) Chemistry: The Key to our Sustainable Future. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-7389-9_21
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DOI: https://doi.org/10.1007/978-94-007-7389-9_21
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