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Abstract

Spectrophotometric method for the determination of nickel (II) using PAP on Amberlite XAD-16 in water and food samples

Author(s): P.Yamini, K.Vijaya Kumar, R.Kishore Kumar V.Govinda, P.Venkateswarlu

The very sensitive, fairly selective spectrophotometric method for the determination of trace amount of nickel with PAP has been developed. PAP reacts in basic media with Nickel (II) to give a blue chelate which has an absorption maximum at 445 nm. The stoichiometric composition of the chelate is 1:2 (Ni-PAP). The reaction is instantaneous and absorbance remains stable for 6days. A polystyrene divinylbenzene resin (Amberlite XAD-16) functionalized by PAP has been synthesized and its sorption properties have been investigated for preconcentration of Ni (II) in natural water and food samples. The analytical parameters including pH, sample volume etc. for the quantitative recoveries of the analyte ions using XAD-16-PAP resin was investigated. The effects of alkaline, earth alkaline ions and some anions on the sorption of analyte ions were also examined. The recovery values were greater than 95%.


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Analytical Chemistry: An Indian Journal received 378 citations as per Google Scholar report

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