Synthesis and characterisation of novel chelating resin for selective preconcentration and trace determination of Pb(II) ions in aqueous samples by innovative microsample injection system coupled flame atomic absorption spectrometry

2014 ◽  
Vol 94 (8) ◽  
pp. 743-755 ◽  
Author(s):  
Ali N. Siyal ◽  
Latif Elçi ◽  
Saima Q. Memon ◽  
Abdullah Akdoğan ◽  
Aysen Hol ◽  
...  
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Chelating Resin ◽  
Injection System ◽  
Trace Determination ◽  
Aqueous Samples ◽  
Flame Atomic Absorption

scholarly journals Determination of Copper in Water and Plant Samples by Flame Atomic Absorption Spectrometry After Preconcentration on Octadecyl Silica Membrane Disks Modified with a Recently Synthesized Schiff's Base

2008 ◽  
Vol 91 (4) ◽  
pp. 865-870 ◽  
Author(s):  
Tayebeh Shamspur ◽  
Ali Mostafavi ◽  
Iran Sheikhshoaie
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Limit Of Detection ◽  
Absorption Spectrometry ◽  
Minimal Amount ◽  
Aqueous Samples ◽  
Silica Membrane ◽  
Flame Atomic Absorption

Abstract A simple, selective, reliable, and sensitive method for the determination of trace amounts of Cu2+ ions in aqueous samples is proposed. The Cu2+ ions are adsorbed quantitatively during the passage of aqueous samples through an octadecyl (C18) silica membrane disk modified by a symmetrical tetradentate Schiff base ligand, N,N'-bis(4-phenylazo salicylaldimine) 3-chloro-1,2-phenylenediamine (H2L). The retained Cu2+ ions were then stripped from the disk by elution with the minimal amount of nitric acid solution and determined by flame atomic absorption spectrometry. Various parameters, such as the effect of pH, flow rate, type and amount of eluent, and the effects of various cationic interferences on the recovery of ions were studied. The proposed method permitted large enrichment factors (about 550 and higher). The limit of detection of the method was 1.5 102 g/L. The use of the same disk modified with 6 mg H2L for at least 30 times showed no change in the recovery of Cu2+ ions. The accuracy of the method was confirmed by determination of Cu2+ ions in standard samples [National Institute of Environmental Studies (NIES) No. 2 and Nippon Keikinzoku Kogyo (NKK) No. 920]. The results demonstrated good agreement with certified values.

Trace determination of cadmium(ii) and copper(ii) in environmental water samples by solid-phase extraction using a novel ionic liquid-modified composite sorbent combined with flame atomic absorption spectrometry

2014 ◽  
Vol 29 (9) ◽  
pp. 1692-1697 ◽  
Author(s):  
Jianping Zou ◽  
Xiaoguo Ma ◽  
Yongfeng Dang ◽  
Yuan Chen
Keyword(s):  
Solid Phase Extraction ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Solid Phase ◽  
Absorption Spectrometry ◽  
Trace Determination ◽  
Phase Extraction ◽  
Flame Atomic Absorption

A sensitive and reliable method for trace determination of Cd(ii) and Cu(ii) based on solid-phase extraction using a novel sorbent coupled with flame atomic absorption spectrometry.

Determination of Total Chromium at Ultratrace Levels in Water and Soil Samples by Coprecipitation Microsample Injection System Flame Atomic Absorption Spectrometry

2014 ◽  
Vol 97 (5) ◽  
pp. 1421-1425 ◽  
Author(s):  
Jameel Ahmed Baig ◽  
Latif Elci ◽  
Muhammad Irfan Khan ◽  
Tasneem Gul Kazi
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Industrial Effluent ◽  
Absorption Spectrometry ◽  
Injection System ◽  
Garden Soil ◽  
Total Chromium ◽  
Flame Atomic Absorption

Abstract A simple, robust, and novel analytical procedure was developed for determination of total chromium (Cr) by carrier element coprecipitation (CECP) coupled microsample injection system with flame atomic absorption spectrometry. For this method, Cr(III) was oxidized by Ce(SO4)2 in acidic media, and the resulting solution formed coprecipitates with ammonium pyrrolidine dithiocarbamate in the presence of Ce(III). The effective parameters of the developed method have been optimized and studied in detail. The LOD and enrichment factor of CECP were 2.13 μg/L and 100 ± 2.8, respectively, with 40 mL initial volumes. The RSD values (n = 6) were <5%. The applicability and accuracy of CECP were estimated by the analysis of total Cr in industrial effluent wastewater by the standard addition method (recoveries > 96%). The accuracy of total Cr by CECP after microwave acid digestion was checked by using a certified reference material (GBW 07309 Stream Sediment). The difference between the found and certified values was not significant (P > 0.05). The proposed method was successfully applied to natural drinking water, industrial effluent wastewater, and the exchangeable fraction of garden soil from Denizli, Turkey.

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