Optimization of supramolecular solvent microextraction prior to graphite furnace atomic absorption spectrometry for total selenium determination in food and environmental samples

Moradi, Morteza; Kashanaki, Rouhollah; Borhani, Saeed; Bigdeli, Hadise; Abbasi, Niloufar; Kazemzadeh, Asghar

doi:10.1016/j.molliq.2017.02.082

Cited by 30 publications

(2 citation statements)

References 46 publications

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“…In order to confirm the efficiency of the absorbent, the effect of interfering ions was investigated [13][14][15][16][17] . In order to study interferences, different concentrations of other ions were added to the sample solution containing cadmium ion and ligand while other experimental parameters such as temperature, pH, contact time and adsorbent amount were constant.…”

Section: Effect Of Interfering Ionsmentioning

confidence: 99%

The efficiency of Fe@Mg-Al layered double hydroxide for cadmium removal from water samples

Motallebi¹,

Moghimi²,

Shahbazi³

et al. 2020

Rev.Roum.Chim.

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The fast development of the population and industrialization cause many environmental problems due to the increase of carcinogenic compounds and heavy metals in the environment. In this regard, many studies have been conducted to remove these compounds from the water, air, and soil. The Layered double hydroxide is one of the adsorbents which have attracted great attention in recent years owing to its ease of preparation, costeffectiveness, environmental compatibility, and non-toxicity. Consequently, in this study, magnetic nanoparticles of Fe@Mg-Al layered double hydroxide have been modified with ammonium pyrrolidine dithiocarbamate (APDC) and then used as an adsorbent to form a complex with cadmium ions and removing them. Based on the absorption properties of synthesized magnetic nanoparticles, an easy, practical, economical and repeatable method has been developed to remove contaminants from water, including heavy metal ions. Cadmium ion has been studied by floating in an aqueous medium by these nanoparticles. Also, the optimal values of effective factors such as pH, amount of magnetic nanoparticles, contact time, temperature and sample volume and ligand concentration were 7, 0.045 g, 30 min, 35 ˚C, 25 mL and 1.7 mg L-1 , respectively. The isotherm equations have been also investigated to evaluate the absorption quality. The thermodynamic parameters as well as the effects of interfering ions have been investigated as well. A flame atomic absorption spectrometer (FAAS) has been applied to detect Cd ions.

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Section: Effect Of Interfering Ionsmentioning

confidence: 99%

The efficiency of Fe@Mg-Al layered double hydroxide for cadmium removal from water samples

Motallebi¹,

Moghimi²,

Shahbazi³

et al. 2020

Rev.Roum.Chim.

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“…Thus, SUPRAS has been widely used for the extraction of different compounds. In the last decades, accessible research has been reported for the application of SUPRAS for the extraction of contaminants from food, involving chili-containing foodstuffs (López-Jiménez et al 2010), fish (Costi et al 2010;Caballo et al 2012;López-Jiménez et al 2014), raw wheat and cereals (García-Fonseca et al 2010; García-Fonseca and Rubio 2016), snacks (Cardeñosa et al 2011;Caballero-Casero et al 2012;Alabi et al 2014), garlic, mint and tea (Moradi et al 2017). It can be seen that people are gradually recognizing the advantages and great utility of SUPRAS.…”

Section: Introductionmentioning

confidence: 99%

Determination of benzo(a)pyrene in fried and baked foods by HPLC combined with vesicular coacervative supramolecular solvent extraction

et al. 2018

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A simple, rapid and low-cost determination method of benzo(a)pyrene in fried and baked foods was proposed by high performance liquid chromatography combined with vesicular coacervative supramolecular solvent (SUPRAS) extraction. The vesicular coacervate was composed of 1-octanol and tetrabutylammonium bromide. 200 mg of dried samples with 600 lL SUPRAS could be mixed to extract benzo(a)pyrene. Neither evaporation nor further clean-up steps for the extracts were needed. The overall sample treatment took approximately 30 min, and several samples could be simultaneously treated using conventional lab equipment. Then, benzo(a)pyrene was analyzed via liquid chromatography-fluorescence detection. Parameters affecting the extraction efficiency were investigated and optimized. The results showed good linearity of benzo(a)pyrene with the coefficients of determination (R 2) of more than 0.9999 in the range of 0.1-50.0 lg/kg. The limit of detection of the method was 0.11 lg/kg. Recoveries for spiked samples in the range of 1-10 lg/kg were between 89.86 and 100.01%, with relative standard deviations from 1.20 to 3.20%. Benzo(a)pyrene was present in food samples (including instant noodles, biscuits, rice crust and fried bread stick) at concentrations in the range of 0.08-0.39 lg/kg according to the proposed method. The proposed pretreatment method significantly reduces the analysis time. Furthermore, the solventless approach is in accordance with the green chemistry development trend and has significant application prospects.

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Speciation of the Selenium in Groundwater Samples of Different Aquifers from Coal Mining Fields: Applied a Green Analytical Technique

Lashari

Kazi

Baig

et al. 2022

Water Air Soil Pollut

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Optimization of supramolecular solvent microextraction prior to graphite furnace atomic absorption spectrometry for total selenium determination in food and environmental samples

Cited by 30 publications

References 46 publications

The efficiency of Fe@Mg-Al layered double hydroxide for cadmium removal from water samples

The efficiency of Fe@Mg-Al layered double hydroxide for cadmium removal from water samples

Determination of benzo(a)pyrene in fried and baked foods by HPLC combined with vesicular coacervative supramolecular solvent extraction

Speciation of the Selenium in Groundwater Samples of Different Aquifers from Coal Mining Fields: Applied a Green Analytical Technique

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