Extraction-spectrophotometric determination of nickel at microgram level in water and wastewater using 2-[(2-mercaptophenylimino)methyl]phenol

An extraction-spectrophotometric method for determination of nickel at sub ppm level using 2-[(2-mercaptophenylimino)methyl]phenol (MPMP) as the new extractant is described. The reagent reacts with nickel(II) at pH > 10 and form a 1:2 brown complex, which is extracted into chloroform. The complex...

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Published in:Bulletin of the Chemical Society of Ethiopia 2008-12, Vol.22 (3), p.323-329
Main Authors: Haji Shabani, A.M., Dadfarnia, S., Shahbaazi, Z., Jafari, A.A.
Format: Article
Language:English
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Liquid-liquid extraction
Ni determination
Schiff bases
Spectrophotometry
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container_issue 3
container_start_page 323
container_title Bulletin of the Chemical Society of Ethiopia
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creator Haji Shabani, A.M.
Dadfarnia, S.
Shahbaazi, Z.
Jafari, A.A.
description An extraction-spectrophotometric method for determination of nickel at sub ppm level using 2-[(2-mercaptophenylimino)methyl]phenol (MPMP) as the new extractant is described. The reagent reacts with nickel(II) at pH > 10 and form a 1:2 brown complex, which is extracted into chloroform. The complex has a maximum absorption at 421 nm with the molar absorptivity of 2.41 x 10 super(5) M super(-1) cm super(-1). Beer's law is obeyed over the range of 0.011-0.30 mu g mL super(-1). The Sandell's sensitivity for 0.001 absorbance unit is 5.34 x 10 super(-4) mu g cm super(-2). The relative standard deviation at 0.018 mu g mL super(-1) is 1.1% (n = 8). The procedure was successfully applied to determination of nickel in wastewater and standard alloy and the accuracy was determined by recovery experiment, independent analysis by furnace-AAS, and analysis of a certified reference martial.
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source Full-Text Journals in Chemistry (Open access)
subjects Liquid-liquid extraction
Ni determination
Schiff bases
Spectrophotometry
title Extraction-spectrophotometric determination of nickel at microgram level in water and wastewater using 2-[(2-mercaptophenylimino)methyl]phenol
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