Solid phase extraction of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions with 1-(2-thiazolylazo)-2-naphthol loaded Amberlite XAD-1180

Abstract

A new method for separation and preconcentration of trace amounts of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions in various matrices was proposed. The method is based on the adsorption and chelation of the metal ions on a column containing Amberlite XAD-1180 resin impregnated with 1-(2-thiazolylazo)-2-naphthol (TAN) reagent prior to their determination by flame atomic absorption spectrometry (FAAS). The effect of pH, type, concentration and volume of eluent, sample volume, flow rates of sample and elution solutions, and interfering ions have been investigated. The optimum pH for simultaneous retention of all the metal ions was 9. Eluent for quantitative elution was 20 ml of 2 mol l(-1) HNO(3). The optimum sample and eluent flow rates were found as 4 ml min(-1), and also sample volume was 500 ml, except for Mn (87% recovery). The sorption capacity of the resin was found to be 0.77, 0.41, 0.57, and 0.30 mg g(-1) for Cu(II), Ni(II), Cd(II), and Mn(II), respectively. The preconcentration factor of the method was 200 for Cu(II), 150 for Pb(II), 100 for Cd(II) and Ni(II), and 50 for Mn(II). The recovery values for all of the metal ions were > or = 95% and relative standard deviations (RSDs) were < or = 5.1%. The detection limit values were in the range of 0.03 and 1.19 microg l(-1). The accuracy of the method was confirmed by analysing the certified reference materials (TMDA 54.4 fortified lake water and GBW 07605 tea samples) and the recovery studies. This procedure was applied to the determination of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) in waste water and lake water samples.

Determination of Some Trace Metals by FAAS after Solid-phase Extraction with Amberlite XAD-1180/TAN Chelating Resin

“…52 Better or comparable sorption capacities for the metal ions are shown by the present resin when compared with the other chelating resins.…”

“…The enrichment factors of the presented method for the investigated metal ions are beter 20,32,[34][35][36]39,52 than, or comparable 30,31,37,38,[40][41][42] to, the other chelating resins.…”

Pre-Concentration Based on Cloud Point Extraction for Ultra-Trace Monitoring of Lead (II) Using Flame Atomic Absorption Spectrometry

“…Octylphenoxypolyethoxy-ethanol (Triton X-114) was obtained from Merck chemicals (Merck, Darmstadt, Germany). Methyl 4,5,8,16,19,6,9,15,18,hexaaza-1(2,6)-pyri dinacyclodocosaphane-10-carboxylate (DLNL) was prepared and characterized as previously described [28]. A 1.0 × 10 −3 M solution of DLNL chelating agent was prepared by dissolving it in ethanol and placing in 100 mL measuring flask.…”

Immobilization of Cd in landfill-leachate-contaminated soil with cow manure compost as soil conditioners: A laboratory study

“…Several duplicate soil samples (5-6 m in deep) from different parts of the sites were obtained from the landfill area and mixed well into a single composite sample. The soil sample was dried at 20ºC for 1 week in a drying oven, sieved (<0.053 mm), and stored in polyethylene bags in a desiccator with calcium chloride to avoid contamination before the remediation experiments (Tokalioglu, Yilmaz, and Kartal, 2009).…”