Solid phase extraction of metal ions in environmental samples on 1-(2-pyridylazo)-2-naphthol impregnated activated carbon cloth

ALOthman, Zeid A.; Yılmaz, Erkan; Habila, Mohamed A.; Soylak, Mustafa

doi:10.1016/j.ecoenv.2014.10.032

Cited by 69 publications

(21 citation statements)

References 38 publications

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“…[8][9][10] Commonly, ame atomic absorption spectrometry (FAAS) has been extensively used for the analysis of elements, [11][12][13] which is comparatively simple and cost effective as compared to other techniques. [8][9][10] Commonly, ame atomic absorption spectrometry (FAAS) has been extensively used for the analysis of elements, [11][12][13] which is comparatively simple and cost effective as compared to other techniques.…”

Section: Introductionmentioning

confidence: 99%

Determination of trace levels of iron in serum samples of hepatitis B and C patients using dispersive liquid–liquid microextraction

et al. 2015

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An environmentally friendly ionic liquid-based dispersive liquid-liquid microextraction (IL-DLLmE) method was developed for the preconcentration of trace levels of iron (Fe) in serum samples of hepatitis B and C patients, prior to its determination by flame atomic absorption spectrometry. The procedure was based on complexation of iron with a chelating reagent, 8-hydroxyquinoline (oxine), whereas an ionic liquid, 1butyl-3-methylimidazolium hexafluorophosphate [C 4 MIM][PF 6 ], and ethanol were chosen as extracting and dispersive solvents, respectively. The factors affecting the efficiency of IL-DLLmE, such as the amount of IL, pH, centrifugation time and ligand concentration, were investigated in detail. The resulting data indicated that the coexisting cations and anions ions had no apparent influence on determination ofFe at trace levels. Under optimal experimental conditions, the enhancement factor and the limit of detection were 59.1 and 1.29 mg L À1 , respectively. The relative standard deviation for five replicate determinations of Fe at 50 mg L À1 was calculated to be <5.0%. The developed method was validated by determining Fe in a certified reference material of serum. The proposed method can be successfully used for the enrichment of Fe in acid digested serum samples of female hepatitis B and C patients.

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Section: Introductionmentioning

confidence: 99%

Determination of trace levels of iron in serum samples of hepatitis B and C patients using dispersive liquid–liquid microextraction

et al. 2015

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“…In fact, solid phase extraction (SPE) is the most commonly used technique for isolation and preconcentration of analytes. [1][2][3] However, its use in its classical mode is now too limited. So, several modifications were explored in the last few years for miniaturization and automation of its various stages.…”

Section: Introductionmentioning

confidence: 99%

New Trend for Acceleration Solid Phase Extraction Process Based on Using Magnetic Nano-adsorbents along with Surface Functionalization through Microwave Assisted Solvent-free Technique

Ahmed

Soliman

2015

ANAL. SCI.

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The use of a microwave assisted solvent-free technique for silica coating of iron magnetic nanoparticles (Fe3O4-MNPs) and their functionalization with three aliphatic diamines: 1,2-ethylenediamine (1,2EDA), 1,5-pentanediamine (1,5PDA) and 1.8-octanediamine (1,8-ODA), were successfully achieved in a very short time. Only 60 min were needed for the nano-adsorbent modification as compared with more than 1000 min using conventional methods under reflux conditions. Their surface characteristics (observed by TEM, XRD and FT-IR), in addition to Cu(II) adsorption capacities (1.805, 1.928 and 2.116 mmol g -1 ) and time of equilibration (5 s) were almost the same. Thus, the time required to accomplish the solid phase extraction process is greatly reduced. On the other hand, the phenomenon of the fast equilibration kinetics was successfully extended on using the functionalized aliphatic diamines magnetic nano-adsorbents as precursors for further microwave treatment. Three selective magnetic nano-adsorbents (Fe3O4-MNPs-SiO2-1,2EDA-3FSA, Fe3O4-MNPs-SiO2-1,5PDA-3FSA and Fe3O4-MNPs-SiO2-1,8ODA-3FSA) were obtained via the reaction with 3-formayl salicylic acid (3FSA) as a selective reagent for Fe(III). At 5 s contact time, they exhibited maximum Fe(III) uptake equal to 4.512, 4.987 and 5.367 mmol g -1 , respectively. Furthermore, modeling of values of metal uptake capacity obtained at different shaking time intervals supports pseudo-second order kinetics.

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“…As a new type of carbon adsorbent, activated carbon cloths (ACCs) have been widely used for different purposes (Alothman et al 2015). The shape of cloth has many advantages as compared to other formations of carbon adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Solid-phase extraction of iridium from soil and water samples by using activated carbon cloth prior to its spectrophotometric determination

Özkantar

Yılmaz

Soylak

et al. 2015

Environ Monit Assess

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A solid-phase extraction method for separation and preconcentration of Ir(IV) ion by using activated carbon cloth (ACC) has been presented. Ir(IV) as their 1-(2-pyridylazo) 2-naphtol (PAN) chelate was adsorbed on ACC at pH 2.0 and was eluted from ACC with acidic dimethylformamide (DMF). The Ir(IV) concentration was determined at 536 nm as Ir(IV)-PAN complex by using UV-vis spectrophotometer. The analytical parameters including pH, sample and eluent flow rates, amount of PAN, eluent type, concentration, and sample volume were optimized. The effects of foreign ions on the recoveries of iridium were also investigated. The preconcentration factor was calculated as 60. The limit of detection (LOD) and the limit of quantification (LOQ) of the method were found as 0.039 and 0.129 μg L(-1), respectively. The method was applied to soil and water samples for iridium determination.

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Solid phase extraction of metal ions in environmental samples on 1-(2-pyridylazo)-2-naphthol impregnated activated carbon cloth

Cited by 69 publications

References 38 publications

Determination of trace levels of iron in serum samples of hepatitis B and C patients using dispersive liquid–liquid microextraction

Determination of trace levels of iron in serum samples of hepatitis B and C patients using dispersive liquid–liquid microextraction

New Trend for Acceleration Solid Phase Extraction Process Based on Using Magnetic Nano-adsorbents along with Surface Functionalization through Microwave Assisted Solvent-free Technique

Solid-phase extraction of iridium from soil and water samples by using activated carbon cloth prior to its spectrophotometric determination

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