NDLI: Optimization of the preconcentration of selenium iv on palladium nanoparticles (PdNPs), using multivariate analysis for the inorganic speciation of selenium in environmental water samples

Content Provider	Royal Society of Chemistry (RSC)
Author	Udas, A. C. Kumar, G. Kiran Singhal, R. K. Datta, D. Sharma, P. S. Sounderajan, Suvarna
Copyright Year	2015
Abstract	A simple method for the characterization and quantification of ultratrace quantities of Se(IV) in environmental water samples by preconcentration of selenium(IV) on PdNPs was optimized by employing the multivariate strategy. 12-run Plackett–Burman factorial design experiments were carried out to identify and the central 23 + star orthogonal composite design was used to optimize the relevant experimental factors. Sodium borohydride (NaBH4) was used to reduce Se(IV) to Se(0) and also to generate PdNPs. The PdNPs were collected and dissolved in a minimum amount of nitric acid and selenium was quantified by ETAAS. Se(VI) in the sample was reduced to Se(IV) and the concentration of Se(VI) was the difference between the concentrations of Se(IV) and total Se(VI) + Se(IV). The standard addition studies of Se(IV) and Se(VI) at the low, mid and high concentration levels of the calibration curve indicated recoveries between 97 and 104%. The detection limit and the preconcentration factor (PF) for the estimation of selenium employing this methodology were 0.025 μg L−1 and 100 respectively. The adsorption capacity of PdNPs in the present study for Se(0) was found to be 28 mg g−1. The proposed procedure was validated by applying it for the determination of the content of total Se in Certified Reference Material BND 701-02 (NPL, India) and applied for the determination of sub ppm to ppm levels of Se(IV) and Se(VI) in ground water samples from the Nawanshahar–Hoshiarpur region, Punjab, India.
Starting Page	8262
Ending Page	8270
Page Count	9
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	7
Issue Number	19
Journal	Analytical Methods
DOI	10.1039/c5ay02023a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Acid Brunei dollar Punjab NPL Nawanshahar Orthogonality Factorial experiment India Hoshiarpur Adsorption ETAAS Punjab, India Selenium Sodium borohydride Burman
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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