Solid-Phase Extraction of Trace Amounts of Uranium(VI) in Environmental Water Samples Using an Extractant-Impregnated Resin Followed by Detection with UV-Vis Spectrophotometry
作者： Ahmad Hosseini-Bandegharaei , Masoud Sarwghadi , Aliasghar Heydarbeigi , Seyyed Hossein Hosseini , Mehdi Nedaie
DOI: 10.1155/2013/671564
关键词:
摘要: A stable extractant-impregnated resin (EIR) containing Chrome Azurol B was prepared using Amberlite XAD-2010 as a porous polymeric support. The new EIR employed for trace separation and preconcentration of U(VI) ion followed by spectrophotometric determination with the arsenazo III procedure. CAB/XAD-2010 exhibited excellent selectivity over coexisting ions. Experimental parameters including pH, contact time, shaking speed, ionic strength were investigated batch extraction methods. Maximum sorption ions occurred at pH 4.3–6.9. capacity found to be 0.632 mmol·g−1. Equilibrium reached in 25 min loading half-time, t1/2, less than 6 min. equilibrium adsorption isotherm fitted Langmuir model. In addition, column packed used column-mode ion. For optimization dynamic procedure, effects sample volume, eluent flow rate, concentration, its volume investigated. factors out 160. But, convenience, factor 150 utilized preconcentration. procedure gave detection limit mol·L−1 (0.12 g·L−1) proposed method showed good performance analyzing environmental water samples.
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