The synthesis of new polymeric sorbent and its application in preconcentration of cadmium and lead in water samples

Şenkal, Bahire Filiz; İnce, Muharrem; Yavuz, Erdem; Yaman, Mehmet

doi:10.1016/j.talanta.2006.12.028

Cited by 58 publications

(24 citation statements)

References 22 publications

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“…Consequently, separation and preconcentration procedures are often needed before GFAAS determination. Various techniques have been applied for the separation and preconcentration of trace Cd and Pb, such as liquid-liquid extraction, 9,10 coprecipitation, 11 solid-phase ex-traction, [12][13][14][15][16] cloud point extraction [17][18][19] and liquid-phase microextraction, 20,21 but the disadvantages such as timeconsuming, unsatisfactory enrichment factors, large organic solvents and secondary wastes, limit their applications. In order to overcome the problems, a novel liquid-liquid extraction technique termed as dispersive liquid-liquid microextraction (DLLME), which is based on a ternary component solvent system like homogeneous liquid-liquid extraction, was proposed recently.…”

Section: Introductionmentioning

confidence: 99%

Determination of Cadmium and Lead in Human Teeth Samples Using Dispersive Liquid‐liquid Microextraction and Graphite Furnace Atomic Absorption Spectrometry

Cheng

Xia

Liang

2011

J Chinese Chemical Soc

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A new method for the determination of cadmium and lead in human teeth was developed based on dispersive liquid-liquid microextraction preconcentration and graphite furnace atomic absorption spectrometry determination. In the proposed approach, O,O-diethyldithiophosphate (DDTP) was used as a chelating agent, and carbon tetrachloride and methanol were selected as extraction and dispersive solvents. Some factors influencing the extraction efficiency of cadmium and lead and their subsequent determination, including extraction and dispersive solvent type and volume, pH of sample solution, concentration of the chelating agent and extraction time, were studied and optimized. Under the optimum conditions, the enrichment factor of 116 and 68 for cadmium and lead were achieved. The detection limit for cadmium and lead was 5.6 and 45 ng L -1 , and the relative standard deviation (R.S.D) was 4.5% and 3.8% (n = 7, c = 1.0 ng mL -1 ), respectively. Verification of the accuracy of the method was carried out by analysis of a standard reference material (NIST 1486, bone meal). The method was successfully applied to the determination of trace amount of cadmium and lead in human teeth samples with satisfactory results.

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Section: Introductionmentioning

confidence: 99%

Determination of Cadmium and Lead in Human Teeth Samples Using Dispersive Liquid‐liquid Microextraction and Graphite Furnace Atomic Absorption Spectrometry

Cheng

Xia

Liang

2011

J Chinese Chemical Soc

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“…Cd(II) has to be previously removed from the system, and Chelex 100 is a good choice as metal scavenger. One of the major disadvantages of using polymeric resins to remove or preconcentrate metals is their hydrolysis by acids and bases (Filiz Senkal et al 2007). Although acidbase mild conditions were used in the metal retention step, it is not unlikely that some residual complexing capacity derived from the resin hydrolysis might have been introduced in the sample.…”

Section: On the Use Of Chelex 100mentioning

confidence: 99%

Effect of bacterial growth in the complexing capacity of a culture medium supplemented with cadmium(II)

Ceretti

Vullo

Zalts

et al. 2009

World J Microbiol Biotechnol

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The aim of this study was to evaluate complexing capacity (CC) accompanying microbial growth in a metal supplemented culture medium. A combined strategy of square wave anodic stripping voltammetry (SWASV) monitored titration and ion-exchange resins treatment (Chelex 100) has been applied. Culture medium, supplemented with Cd(II) in excess to ligands, was inoculated with an indigenous bacterial culture; total ligand concentration and stability constants were determined at different bacterial growth stages. As far as known, determination of CC in such conditions has not been reported (usually ligands in natural or wastewaters exceed metal concentration). HIDA, (N-(2-hydroxyethyl)iminodiacetic acid), was used as a model ligand to mimic soluble products derived from the resin treatment and bacterial metabolism. Ligand concentration, Lt (1.3 ± 0.1 lM), and the conditional stability constant, K 0 , (log K 0 = 5.7 ± 0.2) were in good agreement with expected values (1.0 ± 0.1 lM and log K 0 = 6.1). In the supplemented culture medium, total ligand concentration in the micromolar range (60-80 lM) and conditional stability constants (5.5 \ log K 0 \ 6.5) were determined. Cd(II) complexes detected in the different stages of microbial growth are labile from an electrochemical point of view. Results were compared to the case of Cd(II) non-supplemented broth.

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“…In regarding to water analysis, SPE is more advantageous because the large sample volume does not cause any problem in preconcentration steps as well as less waste generation, less matrix effect, higher potential for the re-use of solid phase, higher preconcentration factor, and no requirement of toxic solvent. As a result, interest in preconcentration techniques for the determination of ultra trace metals in various food, water, and biologic samples by FAAS still continues increasingly because of the disadvantages described above for flameless AAS and the high costs of other methods in compared to FAAS [7,23,24]. As shown in Tab.…”

Section: Introductionmentioning

confidence: 99%

“…Particularly, the developing adsorbent resin without needing of any complexing reagent has the advantage of rapidity and simplicity in preconcentration step. The use of polymer-bonded ligands in preconcentration of metals has been the subject of many research articles [24,29]. Finally, slotted tube atom trap (STAT) is usefully used to improve sensitivity of FAAS as online [17,[30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Novel Polymeric Resin for Solid Phase Extraction and Determination of Lead in Waters

Karaaslan

Şenkal

Cengiz

et al. 2010

CLEAN Soil Air Water

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Interest in preconcentration techniques for the determination of metals at ultratrace levels still continues increasingly because of some disadvantages of flameless atomic absorption spectrometry and the high costs of other sensitive methods in compared to flame atomic absorption spectrometry (FAAS). Among preconcentration techniques, solid-phase extraction is the most popular because of a number of advantages. In this work, thiol-containing sulfonamide resin was synthesized, characterized, and applied as a new sorption material for solid phase extraction and determination of lead in natural water samples. The optimization of experimental conditions was performed using the parameters including pH, contact time, and volumes of initial and elution solutions. After preconcentration procedure, FAAS was used for determinations. The synthesized resin exhibits the superiority in compared to the other adsorption reagents because of the fact that there is no necessity of any complexing reagent as well as high sorption capacity. Consequently, 280-fold improvement in the sensitivity of analytical scheme was achieved by combining the slotted tube atom trap-atomic absorption spectrometry (STAT-FAAS) and the developed preconcentration method. The limit of detection was found to be 0.15 ng mL À1 . The Pb 2þ concentrations in the studied water samples were found to be in the range of 0.9-6.7 ng mL À1 .

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The synthesis of new polymeric sorbent and its application in preconcentration of cadmium and lead in water samples

Cited by 58 publications

References 22 publications

Determination of Cadmium and Lead in Human Teeth Samples Using Dispersive Liquid‐liquid Microextraction and Graphite Furnace Atomic Absorption Spectrometry

Determination of Cadmium and Lead in Human Teeth Samples Using Dispersive Liquid‐liquid Microextraction and Graphite Furnace Atomic Absorption Spectrometry

Effect of bacterial growth in the complexing capacity of a culture medium supplemented with cadmium(II)

Novel Polymeric Resin for Solid Phase Extraction and Determination of Lead in Waters

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