Preconcentration and Determination of Cadmium in Water and Food Samples by<i>in situ</i>Surfactant-Based Solid-Phase Extraction and Flame Atomic Absorption Spectrometry

Jamali, Mohammad Reza; Boromandi, Afsaneh

doi:10.5935/0103-5053.20140082

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…Heavy metals are potentially toxic elements. Thus, they can lead to serious ecological and health problems even at trace levels [1,2]. Cobalt is one of these elements, which surplus in the concentration of it, can cause asthma, gastrointestinal tract irritation, rhinitis, prohibition of enzyme activities, allergic dermatitis vasodilation, and cardiomyopathy [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Among the cited methods, flame atomic absorption spectrometry (FAAS) is a popular technique because its accuracy and precision is high and its cost is low [4,6]. However, the sensitivity of this method limits its application [1,6,7]. To resolve this problem, different separation and pre-concentration techniques such as solidified floating organic drop microextraction (SFODME) [8], hollow fiber-liquid phase microextraction (HF-LPME) [9], dispersive liquid-liquid microextraction [10], and solidphase extraction [4,5,11] have been developed to enrich the analyte concentration to an appropriate concentration.…”

Section: Introductionmentioning

confidence: 99%

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On-line determination of the trace amount of cobalt(II) in real samples by flame atomic absorption spectrometry method after pre-concentration by modified polyvinyl chloride

Bagherian

Farahani

Chamjangali

et al. 2022

Preprint

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This work reports a simple and sensitive on-line solid-phase extraction system for the pre-concentration and determination of a trace amount of Co(II (ions by flame atomic absorption spectrometry (FAAS). This method is based on the on-line retention of cobalt ions with polyvinyl chloride modified by 3-(2-thiazolylazo)-2,6-diaminopyridine (TADAP) in a mini-column system. The retained Co(II) ions were eluted with 1.0 mol L-1 HCl, and direct aspiration to flame atomic absorption spectrometry (FAAS) for an accurate determination of it. The important experimental parameters such as the solution pH, length of column (adsorbent mass), sample flow rate, solvent eluent, type and concentration of the eluent, and co-existing ion effects were investigated in detail and optimized. Under the optimum conditions, the calibration graph was linear over the concentration range of 2-150 µg L-1 for pre-concentration of 10.0 mL of the sample solution. The interassay precession (n = 6) was in the range of 1.8-5.2% at the concentration levels of 10.0, 50.0, 100.0, and 140.0 µg L-1. The limit of detection and enrichment factor were 1.3 µg L-1 and 40, respectively. The method was applied for determination of trace levels of Co(II) ions in different real samples such as tap water, waste water, vegetable, fruit, and drug with satisfactory results.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On-line determination of the trace amount of cobalt(II) in real samples by flame atomic absorption spectrometry method after pre-concentration by modified polyvinyl chloride

Bagherian

Farahani

Chamjangali

et al. 2022

Preprint

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“…15 Nevertheless, the detection of metal trace elements in aqueous samples is difficult due to various factors, particularly their low concentration and the matrix effects. 16 Several methods have been reported for the separation and preconcentration of metal ions, such as coprecipitation, 17,18 liquid-liquid extraction (LLE), 19,20 solid-phase extraction (SPE), [21][22][23] and cloud point extraction (CPE). [24][25][26] Recently, coacervates made up of vesicles 27,28 and reversed micelles of alkyl carboxylic acids 29 have been reported, which permit the extraction of analytes in a wide polarity range.…”

Section: Introductionmentioning

confidence: 99%

Decanoic Acid Reverse Micelle-Based Coacervates for Microextraction of Silver in Natural Waters Prior to Flame Atomic Absorption Spectrometry Determination

Shokouhifar¹,

Hosseini²,

Jamali³

et al. 2016

Journal of the Brazilian Chemical Society

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In the present work, a novel, simple, and efficient method for the determination of silver in natural water samples was developed. The method is based on the extraction of silver with coacervate made up of decanoic acid reverse micelles and the subsequent determination by flame atomic absorption spectrometry (FAAS). Dithizone was used as a chelating agent. To obtain the best extraction results, some experimental parameters (such as coacervate composition, pH, concentration of chelating agent, and ionic strength) affecting the extraction efficiency were investigated and optimized. Under optimum conditions, the calibration curve was linear in the concentration range of 5-200 µg L -1 , with the correlation coefficient (r) equal to 0.995. The limit of detection and the enrichment factor were 1.6 µg L -1 and 15, respectively. The method was successfully applied to the analysis of silver in natural water samples.

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Synthesis of cellulose nanofibers functionalized by dithiooxamide for preconcentration and determination of trace amounts of Cd(II) ions in water samples

et al. 2020

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Preconcentration and Determination of Cadmium in Water and Food Samples byin situSurfactant-Based Solid-Phase Extraction and Flame Atomic Absorption Spectrometry

Cited by 5 publications

References 1 publication

On-line determination of the trace amount of cobalt(II) in real samples by flame atomic absorption spectrometry method after pre-concentration by modified polyvinyl chloride

On-line determination of the trace amount of cobalt(II) in real samples by flame atomic absorption spectrometry method after pre-concentration by modified polyvinyl chloride

Decanoic Acid Reverse Micelle-Based Coacervates for Microextraction of Silver in Natural Waters Prior to Flame Atomic Absorption Spectrometry Determination

Synthesis of cellulose nanofibers functionalized by dithiooxamide for preconcentration and determination of trace amounts of Cd(II) ions in water samples

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