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Synthesis of New Reagent Benzyloxybenzaldehydethiosemicarbazone (BBTSC): Selective, Sensitive and Extractive Spectrophotometric Determination of Pd(II) in Water Samples and Synthetic Mixtures
Author(s) -
Narayana Suvarapu Lakshmi,
Reddy Koduru Janardhan,
Reddy Somala Adi Narayana,
Kumar Jyothi Rajesh,
Reddy Ammireddy Varada
Publication year - 2007
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200700174
Subject(s) - chemistry , molar absorptivity , reagent , detection limit , palladium , repeatability , cyclohexanol , metal ions in aqueous solution , chromatography , analytical chemistry (journal) , metal , physics , organic chemistry , optics , catalysis , biochemistry
A new reagent, benzyloxybenzaldehydethiosemicarbazone (BBTSC) was synthesized and a new method was developed for the simple, highly selective and extractive spectrophotometric determination of palladium(II) with BBTSC at wave length 365 nm. The metal ion formed a yellow colored complex with BBTSC in acetate buffer of pH 5.0, which was easily extractable into cyclohexanol with 1:1 (Metal: Ligand) composition. The method obeys Beer's law in the range of 5–60 ppm. The molar absorptivity and Sandell's sensitivity were found to be 0.4 × 10 4 Lt. mol −1 cm −1 and 0.02661 μg cm −2 , respectively. The correlation co‐efficient of the Pd(II)‐BBTSC complex was 0.9657, which indicated an excellent linearity between the two variables. The repeatability of the method was checked by finding the relative standard deviation (RSD) (n = 10), which was 0.321% and its detection limit 0.016875 μg.mL −1 . The instability constant of the method was calculated by Asmus' method as 3.5714 × 10 −4 . The interfering effect of various cations and anions were also studied. The proposed method was successfully applied for the determination of palladium(II) in synthetic and water samples. The results were compared with those obtained using an atomic absorption spectrophotometer, testing the validity of the method.