Analytical optimization of liquid-liquid extractive spectrophotometric assessment protocol for tetravalent platinum: Analysis of environmental samples and cisplatin.

Autor: Shaikh AB; Chemistry Research Laboratory, Department of Chemistry, Shri Shivaji Mahavidyalaya, Barshi 413411, Maharashtra, India., Barache UB; Chemistry Research Laboratory, Department of Chemistry, Shri Shivaji Mahavidyalaya, Barshi 413411, Maharashtra, India; School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Kegaon, Solapur 413255, Maharashtra, India. Electronic address: umesh.barache@gmail.com., Lawand AS; School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Kegaon, Solapur 413255, Maharashtra, India., Kamble GS; Analytical Chemistry Laboratory, Department of Chemistry, Shivaji University, Kohapur 416004, Maharashtra, India; Department of Engineering Chemistry, Kolhapur Institute of Technology's College of Engineering (Autonomous), Kolhapur 416234, Maharashtra, India., Gaur ML; Materials Research Laboratory, Department of Chemistry, C.B. Khedgi's Basaveshwar Science, Raja Vijaysinh Commerce and Raja Jaysinh Arts College, Akkalokot 413216, Maharashtra, India., Gaikwad SH; Chemistry Research Laboratory, Department of Chemistry, Shri Shivaji Mahavidyalaya, Barshi 413411, Maharashtra, India. Electronic address: rasayanshg@gmail.com.
Jazyk: angličtina
Zdroj: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2023 Jan 15; Vol. 285, pp. 121918. Date of Electronic Publication: 2022 Sep 24.
DOI: 10.1016/j.saa.2022.121918
Abstrakt: An easy and reliable method is optimized for extractive spectrophotometric assessment of platinum(IV) with 4-(4'-nitrobenzylideneimino)-3-methyl-5-mercapto-1,2,4-triazole as an extractant. The basis of this method is the formation of red platinum(IV) complex with the above reagent in acetate buffer medium (pH 5.0) and extraction in chloroform. Good linearity with regression equation as y = 1.011 × 10 4  ×  + 0.002 having correlation coefficient (R 2 ) of 0.998 over concentration up to 17.5 µg mL -1 of platinum(IV) was achieved with apparent molar absorptivity of 1.011 × 10 4 L mol -1 cm -1 . The limit of detection (0.22 µg mL -1 ), limit of quantification (0.73 µg mL -1 ) and Sandell's sensitivity (0.0193 µg cm -2 ) were also estimated. The interference of various cations was removed by using proper masking agents and consequently by using EDTA and citrate to mask certain transition metals, the method becomes highly specific for platinum(IV), including the effects of platinum group metals. The method is effectively used for determination of platinum(IV) from environmental and real samples such as alloys, catalysts, thermocouple wire and pharmaceutical sample.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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