Sea Sponge as a Low Cost Biosorbent for Solid Phase Extraction of Some Heavy Metal Ions and Determination by Flame Atomic Absorption Spectrometry

2014 ◽  
Vol 97 (6) ◽  
pp. 1689-1695 ◽  
Author(s):  
Aslıhan Karatepe ◽  
Mustafa Soylak
Keyword(s):  
Metal Ions ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Water Samples ◽  
Solid Phase ◽  
Tap Water ◽  
Absorption Spectrometry ◽  
Flame Atomic Absorption ◽  
Separation And Preconcentration ◽  
Preconcentration Method

Abstract A new, easy, sensitive, and environmentally friendly separation and preconcentration method was developed to determine Cu(II), Fe(III), Pb(II), and Ni(II) at trace levels by use of a column filled with sea sponge without any complexing reagent, and atomic absorption spectrometry. The influences of analytical parameters, such as pH of the solutions, type of eluent, volume of sample, solution and eluent flow rates, and diverse ions, were examined for the quantitative recoveries of the analyte ions. The metal ions were eluted from the column by using 2 M HNO3. Accurate results were found for spiked samples after applying the preconcentration method. The LOD values were found to be between 1.5 and 5.6 μg/L based on three times the SD of the blanks. The method has been successfully applied to determine Cu(II), Fe(III), Pb(II), and Ni(II) ions in tap water samples, mineral water samples, and a certified reference material.

scholarly journals "ASSESSMENT OF THE TRACE LEVELS OF LEAD (II) USING SOLID PHASE EXTRACTION AND FLAME ATOMIC ABSORPTION SPECTROMETRY"

2006 ◽  
Vol 3 (2) ◽  
pp. 89-98 ◽  
Author(s):  
Mohammad Saber Tehrani ◽  
Majid Mohammadhosseini
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Water Samples ◽  
Solid Phase ◽  
Absorption Spectrometry ◽  
Silica Membrane ◽  
Flame Atomic Absorption ◽  
Interfering Ions

An efficient procedure for pre-concentration, separation and determination of the trace amounts of lead (II) ions in water samples has been established. The analyte is adsorbed on the surface of C18 silica membrane disk modified with APDC, quantitatively, while other interfering ions pass through the disk to drain. The sorbed Pb2+ ions are then stripped by appropriate eluting agents followed by monitoring of the eluates by flame atomic absorption spectrometry (FAAS). The effects of sample pH, amount of the modifier, stripping agent types, sample flow-rates, and potential interfering ions were also investigated. The described method involves a pre-concentration factor of about 200. The detection limit of the procedure is 0.93 ng.mL-1. The method was employed for isolation and determination of lead in different water samples.

scholarly journals A New Chelating Resin for Preconcentration and Determination of Mn(II), Ni(II), Cu(II), Zn(II), Cd(II), and Pb(II) by Flame Atomic Absorption Spectrometry

2003 ◽  
Vol 86 (6) ◽  
pp. 1218-1224 ◽  
Author(s):  
Mohan A Maheswari ◽  
Mandakolathur S Subramanian
Keyword(s):  
Metal Ions ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Water Samples ◽  
Metal Ion ◽  
Absorption Spectrometry ◽  
Metal Ion Extraction ◽  
Ion Extraction ◽  
Flame Atomic Absorption

Abstract A new polychelatogen, AXAD-16-1, 2-diphenylethanolamine, was developed by chemically modifying Amberlite XAD-16 with 1, 2-diphenyl-ethanolamine to produce an effective metal-chelating functionality for the preconcentration of Mn(II), Ni(II), Cu(II), Zn(II), Cd(II), and Pb(II) and their determination by flame atomic absorption spectrometry. Various physiochemical parameters that influence the quantitative preconcentration and recovery of metal were optimized by both static and dynamic techniques. The resin showed superior extraction efficiency with high-metal loading capacity values of 0.73, 0.80, 0.77, 0.87, 0.74, and 0.81 mmol/g for Mn(II), Ni(II), Cu(II), Zn(II), Cd(II), and Pb(II), respectively. The system also showed rapid metal-ion extraction and stripping, with complete saturation in the sorbent phase within 15 min for all the metal ions. The optimum condition for effective metal-ion extraction was found to be a neutral pH, which is a great advantage in the preconcentration of trace metal ions from natural water samples without any chemical pretreatment of the sample. The resin also demonstrated exclusive ion selectivity toward targeted metal ions by showing greater resistivity to various complexing species and more common metal ions during analyte concentration, which ultimately led to high preconcentration factors of 700 for Cu(II); 600 for Mn(II), Ni(II), and Zn(II); and 500 for Cd(II) and Pb(II), arising from a larger sample breakthrough volume. The lower limits of metal-ion detection were 7 ng/mL for Mn(II) and Ni(II); 5 ng/mL for Cu(II), Zn(II), and Cd(II), and 10 ng/mL for Pb(II). The developed resin was successful in preconcentrating metal ions from synthetic and real water samples, multivitamin-multimineral tablets, and curry leaves (Murraya koenigii) with relative standard deviations of <3.0% for all analytical measurements, which demonstrated its practical utility.

scholarly journals Analysis of Some Trace Metals in Fish Species after Preconcentration with Congo Red on Amberlite XAD-7 Resin by Flame Atomic Absorption Spectrometry

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Güzin Alpdoğan ◽  
Nevim San ◽  
Şule Dinç Zor
Keyword(s):  
Metal Ions ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Congo Red ◽  
Absorption Spectrometry ◽  
Flame Atomic Absorption ◽  
Relative Standard ◽  
Fish Samples ◽  
Separation And Preconcentration

A new procedure for separation and preconcentration of trace amounts of Cu(II), Ni(II), Fe(III), Zn(II), Cr(III), Cd(II), and Pb(II) in fish samples was proposed. The procedure is based on the adsorption of these metal ions on the column of Amberlite XAD-7 as congo red complexes prior to their determination by flame atomic absorption spectrometry (FAAS). Several factors that can affect the sorption and elution efficiency of the metal ions were investigated and optimized. The sorption was quantitative in the pH range of 6.0–9.0 for Cu(II) and Ni(II), 5.5–8.0 for Fe(III), 6.0–8.5 for Zn(II) and Cd(II), and 7.0–8.5 for Cr(III) and Pb(II). The optimum pH for simultaneous retention was 7.5. The sorption capacity of the resin was found to be 0.89, 0.72, 0.82, 0.61, 0.53, 0.84, and 0.78 mg/g for Cu(II), Ni(II), Fe(III), Zn(II), Cr(III), Cd(II), and Pb(II), respectively. The precision of the method was evaluated as the relative standard deviation obtained by analyzing a series of six replicates and below 6% for all seven elements. The validation of the method was performed by the analysis of certified reference materials. The proposed method was successfully applied to separation/preconcentration and determination of these metals in fish samples.

Sign in / Sign up

Export Citation Format

Share Document