Solid-phase extraction and pre-concentration of trace metals in natural waters using indigenously synthesized chelating resin and their subsequent determination by ICP-OES

2011 ◽  
Vol 7 (3) ◽  
pp. 389-395 ◽  
Author(s):  
Farhat Waqar ◽  
Saida Jan ◽  
Muhammad Hakim ◽  
Bashir Mohammad ◽  
Abdul Ghaffar ◽  
...  
Keyword(s):  
Trace Metals ◽  
Solid Phase Extraction ◽  
Natural Waters ◽  
Solid Phase ◽  
Chelating Resin ◽  
Phase Extraction ◽  
Icp Oes ◽  
Subsequent Determination

scholarly journals Rapid immobilisation of 8-hydroxyquinoline onto silica materials and its application for on-line solid-phase extraction of transition metals from environmental samples before ICP-OES monitoring

2013 ◽  
Vol 14 (1) ◽  
pp. 55-65
Keyword(s):  
Solid Phase Extraction ◽  
Environmental Samples ◽  
Solid Phase ◽  
Chelating Resin ◽  
Phase Extraction ◽  
Icp Oes ◽  
Silica Supports ◽  
The Matrix ◽  
Reactive Groups ◽  
On Line

Chelating resins based on immobilised oxines are attractive solid-phase extraction (SPE) materials in the analysis of trace metals from environmental samples. The most common immobilisation procedure for bonding oxines to silica supports is time-consuming and incompatible with “green chemistry” regulations. In this work, a rapid, environmentally friendly chemical transformation to attach oxines (i.e. 8-hydroxyquinoline) to silica surfaces is reported. The chelating resin produced by the procedure described here maintains the chemical configuration (including the spacer arm separating the reactive groups from the matrix) and is identical to that obtained with the traditional method. The resin showed satisfactory capacity exchange and excellent performance as a SPE material for on-line sample preparation (preconcentration and matrix elimination) of some transition metals before their determination by ICP-OES. The applicability of this SPE material was tested by analysing Cu, Co, Zn, Ni and Pb in the range of 50-300 ng ml-1 from a synthetic matrix simulating sediment. The recovery values ranged from 100% for Zn to 70% for Ni. The system was used with optimised parameters to analyse these ions in different sediment reference materials. The results showed good agreement with certified values.

scholarly journals Silica-based chelating resin bearing dual 8-Hydroxyquinoline moieties and its applications for solid phase extraction of trace metals from seawater prior to their analysis by ICP-MS

2019 ◽  
Vol 12 (3) ◽  
pp. 360-369 ◽  
Author(s):  
Awadh O. AlSuhaimi ◽  
Salman M. AlRadaddi ◽  
Adeeb K. Al-Sheikh Ali ◽  
Amjad M. Shraim ◽  
Thamer S. AlRadaddi
Keyword(s):  
Trace Metals ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Chelating Resin ◽  
Phase Extraction ◽  
Icp Ms

Determination of Zn(II) in natural waters by ICP-OES with on-line preconcentration using a simple solid phase extraction system

2010 ◽  
Vol 95 (2) ◽  
pp. 164-168 ◽  
Author(s):  
Luis A. Escudero ◽  
Luis D. Martinez ◽  
José A. Salonia ◽  
José A. Gasquez
Keyword(s):  
Solid Phase Extraction ◽  
Natural Waters ◽  
Solid Phase ◽  
Extraction System ◽  
Phase Extraction ◽  
Icp Oes ◽  
On Line

Preparation of Silica-4-(2-pyridylazo) Resorcinol Chelator for Solid Phase Extraction of Transition Metals from Groundwater

2019 ◽  
Vol 41 (1) ◽  
pp. 151-151
Author(s):  
Awadh O AlSuhaimi Awadh O AlSuhaimi
Keyword(s):  
Heavy Metals ◽  
Trace Metals ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Aqueous Media ◽  
Selective Extraction ◽  
Exchange Capacity ◽  
Chelating Resin ◽  
Metal Extraction ◽  
Phase Extraction

The determination of trace heavy metals in environmental samples requires reliable sample preparation method to improve instrument detectability or minimize matrices effect. Solid phase extraction (SPE) using metal chelators is an attractive approach for the selective extraction of trace metals from aqueous media in various applications. In this work, chelating resin was prepared by chemical attachment of the chelating moiety, 4-(2-pyridylazo)resorcinol(PAR) onto silica gel using an eco-friendly chemical transformation. The successfulness of the chemical modification was confirmed by Fourier transform infrared (FTIR), elemental analysis (EA) and scanning electron microscopy (SEM). The separation/preconcentration conditions of analytes including exchange capacity, effect of pH, adsorption kinetics and isotherm for metal extraction, were investigated.At optimum conditions, the resin loading capacity for the metals Cu2+, Ni2+ and Mn2+were 0.121, 0.132 and 0.124 mmolg-1in that order. The material performance as SPE sorbent for trace metals has been assessed usingCu2+, Ni2+ and Mn2+ in certified reference natural water sample, and real groundwater samples from Almedinah AlMunawarah. The accurate and precise results verify the resin appropriateness for matrix removal/ preconcentration prior to the analysis of heavy metals from this type of matrices.

scholarly journals Functionalization of Amberlite XAD-4 with 8-hydroxyquinoline chelator using aryldiazonium radical reaction and its application for solid phase extraction of trace metals from groundwater samples

2020 ◽  
Keyword(s):  
Trace Metals ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Radical Reaction ◽  
Chelating Resin ◽  
Phase Extraction ◽  
Hypophosphorous Acid ◽  
Groundwater Samples ◽  
Efficient Performance ◽  
Diazo Coupling

<p>In this work, the aryldiazonium salts radical addition method has been used successfully to anchor 8-hydroxyquinoline (8-HQ) moieties onto the surface of Amberlite XAD-4 beads. The nitroaniline aryldiazonium salt was generated (in-situ) and covalently grafted onto Amberlite XAD-4 by aid of hypophosphorous acid as a catalyst to facilitate the anchorage of 8-HQ chelator making use of the conventional diazo coupling. The successfulness of the synthesized chelating resin was confirmed by (ATR-IR), (TGA) and (XPS). The risen was packed into cartridges and used with standard solid phase extraction (SPE) apparatus for the extraction of trace metals; Co (II), Ni (II) and Cu (II) from groundwater samples prior to their measurement by (ICP-MS). The resin exhibited more than 90% enhancement in capacity exchange relative to the plain Amberlite XAD-4. Under the optimum conditions the sorption capacity of the sorbent was 0.366, 0.265 and 0.328 (mM/g) for Co (II), Ni (II) and Cu (II) respectively. The sorbent showed efficient performance when applied for SPE of trace metals from groundwater real samples from AlMadinah AlMumnawarah, Saudi Arabia.</p>

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