Flame Atomic Absorption Spectrometric Determination of Cadmium in Vegetable and Water Samples After Preconcentration Using Magnetic Solid-Phase Extraction

Roushani, Mahmoud; Baghelani, Yar M.; Abbasi, Shahryar; Mavaei, Maryamosadat; Mohammadi, Sayed Zia

doi:10.1080/19315260.2016.1272658

Cited by 16 publications

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References 53 publications

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“…Thus, it is extremely substantial to ascertain Cd(II) and other heavy metal ions in typically consumed food and waters with accurate, credible, and sensitive methodologies. Flame atomic absorption spectrometry (FAAS) is a low-priced and sensitive alternative that is commonly preferred for the quantitation of heavy metal ions' level (Roushani et al 2017). Nevertheless, a separation and preconcentration method is generally indispensable before the analysis due to the existence of analyte ions at too low concentration levels to be precisely determined by modern instrumental methods and the complicated matrices that cause interferences during the analysis (Shahryari et al 2022).…”

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confidence: 99%

Insights into brewed tea waste as a green and low-priced adsorbent for solid-phase extraction of Cd(II) ions: isotherm, kinetic, and artificial neural network approach

et al. 2022

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In the present research, brewed tea waste (BTW) was utilized as a green, low-priced, and abundant adsorbent for separation/preconcentration of Cd(II) ions through solid-phase extraction method from water and foods for the first time. BTW was applied as a natural adsorbent, without using any chelating agent to bind Cd(II) ions or any chemical reagent for its modification. A three-layer artificial neural network model using backpropagation algorithm was utilized to explicate a prediction model for the extraction performance of Cd(II) ions by selecting the input parameters as solution pH, quantity of BTW, sample volume, eluent concentration and volume, and equilibrium time for desorption. The preconcentration factor, relative standard deviation, and detection limit were attained as 100, 3.03%, and 0.56 µg L−1, respectively. It was decided that the Langmuir isotherm model is acceptable to characterize the retention of Cd(II) ions on BTW. This result pointed out that the active binding sites on the BTW surface are homogeneously distributed. Adsorption capacity of BTW was achieved as 41.5 mg g−1 which is higher than several expensive and difficult-to-prepare adsorbents. Adsorption kinetics was elucidated by pseudo-second order kinetic model. After confirmed the accuracy of the method with spike/recovery studies, it was employed for Cd(II) determination in water (stream and sea water) and food (eggplant, lettuce, parsley, apple, and apricot) samples with high accuracy. The inferences of the study proved that the BTW offers a magnificent application prospect in the extraction of Cd(II) ions.

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Section: Introductionmentioning

confidence: 99%

Insights into brewed tea waste as a green and low-priced adsorbent for solid-phase extraction of Cd(II) ions: isotherm, kinetic, and artificial neural network approach

et al. 2022

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Application of DLLME‐SFO as a Green Analytical Tool for Determination of Trace Amounts of Cadmium and Lead in Vegetables and Fruits using FAAS: Optimization Using Box‐Behnken Design**

et al. 2022

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In this study, dispersive liquid-liquid microextraction method based on solidification of floating organic drop (DLLME-SFO) was developed for the preconcentration of trace amount of Pb(II) and Cd(II) in vegetable and fruit extracts (DIW, Apple, Kiwi, Banana, Orange, Mint, Dill, Savory, and Thyme) and determination of these ions by flame atomic absorption spectroscopy (FAAS). The proposed method is based on the formation of an ion association Pb-4-(2-thiazolylazo) resorcinol (TAR) -zephiramine chloride (ZCl) and Cd-4-(2-thiazolylazo) resorcinol (TAR) -zephiramine chloride (ZCl) and then extraction of the resulting complex in micro-droplets of the extraction solvent. Response surface methodology (RSM) based on the Box-Behnken Design (BBD) was applied to optimize the experimental variables and evaluate the effect of factors. Optimal conditions were obtained with pH = 6, 0.6 mL of the ligand solution 4-(2-thiazolylazo) resorcinol 0.2 %, 221 μL of 0.2 % zephiramine chloride, 130 μL of 1-undecanol as solvent extraction, and 530 μL of acetonitrile. The linear range was 3.8-200 and 1.0-160.0 μg L À 1 with a coefficient of determination (R 2 ) of 0.9976 and 0.9985 for Pb (II) and Cd(II), respectively. The limit of detection (LOD) was found to be 1.2 and 0.3 μg L À 1 for Pb (II) and Cd(II), respectively. According to the results of market samples, the recovery (%) of the interday and intraday related to the Pb(II) were in the range of 94.67 % to 103.33 % and 95.33 % to 104.00 % for fruits and vegetables, respectively. Also, the relative standard deviation (RSD%) values of Pb(II) corresponding to the interday and intraday were found to be 1.52 % to 4.36 % and 2.15 % to 4.54 % for fruits and vegetables, respectively. In addition, the recoveries of Cd(II) were obtained 96.33 % to 104.00 % and 97.33 % to 103.33 % for fruits and vegetables, respectively. The RSD values of Cd(II) were 2.09 % to 4.19 % and 2.15 % to 4.54 % for fruits and vegetables, respectively. DLLME-SFO uses an extraction solvent with lower toxicity instead of highly toxic solvents in other methods and high extraction recovery within a short period of time is possible.

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Preconcentration of heavy metal ions on magnetic multi-walled carbon nanotubes using magnetic solid-phase extraction and determination in vegetable samples by electrothermal atomic absorption spectrometry: Box–Behnken design

et al. 2022

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Flame Atomic Absorption Spectrometric Determination of Cadmium in Vegetable and Water Samples After Preconcentration Using Magnetic Solid-Phase Extraction

Cited by 16 publications

References 53 publications

Insights into brewed tea waste as a green and low-priced adsorbent for solid-phase extraction of Cd(II) ions: isotherm, kinetic, and artificial neural network approach

Insights into brewed tea waste as a green and low-priced adsorbent for solid-phase extraction of Cd(II) ions: isotherm, kinetic, and artificial neural network approach

Application of DLLME‐SFO as a Green Analytical Tool for Determination of Trace Amounts of Cadmium and Lead in Vegetables and Fruits using FAAS: Optimization Using Box‐Behnken Design**

Preconcentration of heavy metal ions on magnetic multi-walled carbon nanotubes using magnetic solid-phase extraction and determination in vegetable samples by electrothermal atomic absorption spectrometry: Box–Behnken design

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