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A micellar mediated novel method for the determination of selenium in environmental samples using a chromogenic reagent

Pandey, Garima Pravin and Singh, Ajaya K. and Deshmukh, Lata and Asthana, Anupama and Yoshida, Masafumi and Prasad, Surendra (2020) A micellar mediated novel method for the determination of selenium in environmental samples using a chromogenic reagent. Analytical Methods, 12 (35). pp. 4327-4333. ISSN 1759-9679

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    Abstract

    A novel, simple, sensitive and rapid spectrophotometric method for the determination of selenium(IV) in an acidic medium using rhodamine B hydrazide (RBH) has been developed. The method is based on the micellar mediated oxidation of RBH by Se(IV) in an acidic medium to produce a pinkish violet color of rhodamine B, which was monitored spectrophotometrically at λmax 585 nm. The sensitivity of the method was found to increase when the reaction was performed in a micellar medium. Beer's law was obeyed in the concentration range of 0.002–0.032 μg mL−1. The reaction variables such as time, temperature, reagent concentration, and acidity have been optimized for the reaction. Sandell's sensitivity and molar absorptivity for the reaction system were found to be 0.00004 μg cm−2 and 42.52 × 106 L mol−1 cm−1, respectively. The developed method was successfully applied for the determination of Se(IV) in several real samples with quantitative results.

    Item Type: Journal Article
    Subjects: Q Science > QD Chemistry
    Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Biological and Chemical Sciences
    Depositing User: Fulori Nainoca - Waqairagata
    Date Deposited: 04 Nov 2020 14:59
    Last Modified: 04 Nov 2020 14:59
    URI: http://repository.usp.ac.fj/id/eprint/12438
    UNSPECIFIED

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