Solid Phase Extraction of Cd, Cu, and Ni from Leafy Vegetables and Plant Leaves Using Amberlite XAD-2 Functionalized with 2-Hydroxy-acetophenone-thiosemicarbazone (HAPTSC) and Determination by Inductively Coupled Plasma Atomic Emission Spectroscopy

• Published in: Journal of agricultural and food chemistry 2006-04, Vol.54 (8), p.2868-2872
• Main Authors: Rao, G. Purna Chandra, Seshaiah, Kalluru, Rao, Yerra Koteswara, Wang, M. C
• Format: Article
• Language: English
• Subjects: Acetophenones - chemistry; Amberlite XAD-2 resins; Biological and medical sciences; cadmium; Cadmium - analysis; Chelating Agents; copper; Copper - analysis; Drug Stability; food analysis; food contamination; Food industries; Fruit and vegetable industries; Fundamental and applied biological sciences. Psychology; green leafy vegetables; Hydrogen-Ion Concentration; inductively coupled plasma atomic emission spectroscopy; leaves; medicinal plants; nickel; Nickel - analysis; Plant Leaves - chemistry; Polystyrenes; Sensitivity and Specificity; solid phase extraction; spectrometers; Spectrophotometry, Atomic - methods; Thiosemicarbazones - chemistry; Vegetables - chemistry
• ISSN: 0021-8561; 1520-5118
• DOI: 10.1021/jf0600049

A method for solid phase extraction of trace metals, namely, Cd, Cu, and Ni, using Amberlite XAD-2 functionalized with a new chelating ligand, 2-hydroxy-acetophenone-3-thiosemicarbazone (Amberlite XAD-2-HAPTSC), has been developed. The optimum experimental conditions for the quantitative sorption of three metals, pH, effect of flow rate, concentration of eluent, sorption capacity, kinetics of sorption, and the effect of diverse ions on the sorption of analytes have been investigated. The chelating resin could be reused for more than 20 cycles of sorption−desorption without any significant change (