Heavy metals determination in water and food samples after preconcentration by a new nanoporous adsorbent

Hajiaghababaei, Leila; Tajmiri, Tomaj; Badiei, Alireza; Khaniani, Yeganeh; Ziarani, Ghodsi Mohammadi

doi:10.1016/j.foodchem.2013.04.096

Cited by 36 publications

(8 citation statements)

References 29 publications

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“…While these elements are essential, they can be toxic when taken in excess (Ensafi and Shiraz, 2008;Hedberg et al, 2011;Mohammadi et al, 2013a). However, some metals such as cadmium are non-essential metals as they are toxic, even in traces (Ensafi and Shiraz, 2008;Hajiaghababaei et al, 2013;Hedberg et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Determination of copper, nickel, manganese and cadmium ions in aqueous samples by flame atomic absorption spectrometry after simultaneous coprecipitation with Co(OH)2

Mohammadi

Shamspur

Baghelani

2019

Arabian Journal of Chemistry

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A separation-preconcentration procedure was developed for the determination of trace amounts of copper, nickel, manganese and cadmium ions in water samples by flame atomic absorption spectrometry after coprecipitation by Co(OH) 2 as a carrier without a chelating agent. The influence of the various analytical parameters such as pH, amount of carrier reagent, standing time, centrifugation rate and time, sample volume and matrix effects on the recovery of the analyte ions was studied. Under the specified experimental conditions the calibration curves for Ni(II) and Cu(II) were linear from 0.5 to 200 ng mL À1 and for Mn(II) and Cd(II) from 0.5 to 250 and 0.3 to 80 ng mL À1 , respectively. The relative standard deviations for seven replicate determinations of a mixture of 40.0 ng mL À1 of Cu(II), Ni(II), Mn(II) and 20 ng mL À1 of Cd(II) in the original solution were 1.9%, 1.7%, 1.8% and 2.1%, respectively. The detection limits based on 3S b /m for Cu(II), Ni(II), Mn(II) and Cd(II) in the original solution were 0.2, 0.2, 0.3 and 0.07 ng mL À1 , respectively. The limits of quantification based on 10S b /m for Cu(II), Ni(II), Mn(II) and Cd(II) in the original solution were 6.7, 6.7, 10.0 and 2.3 ng mL À1 , respectively. The proposed method has been applied to the determination of trace amounts of the analyte ions in two certified reference materials (the National Institute for Environment Studies (NIES) No. 1 Pepperbush and NIES No. 7 Tea Leaves) and water samples and satisfactory results were obtained. ª 2014 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).

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Section: Introductionmentioning

confidence: 99%

Determination of copper, nickel, manganese and cadmium ions in aqueous samples by flame atomic absorption spectrometry after simultaneous coprecipitation with Co(OH)2

Mohammadi

Shamspur

Baghelani

2019

Arabian Journal of Chemistry

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“…In general, the chance of heavy metal contamination in food and water is high due to the increasing anthropic activities. For these reasons, it is important to define/ establish the chemical quality of water, particularly the content of heavy metals, in order to evaluate the possible human health risk [31][32][33][34][35][36][37]. Metals such as zinc, copper, iron, and manganese are essential since they play an important role in biological systems, whereas chromium, lead, and cadmium are toxic even in traces.…”

Section: Introductionmentioning

confidence: 99%

Pollution Abatement of Heavy Metals in Different Conditions by Water Kefir Grains as a Protective Tool against Toxicity

Volpi

Ginepro

Tafur-Marinos

et al. 2019

Journal of Chemistry

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This research paper addresses the hypothesis that Water Kefir grains can be used as absorbers of metal ions and reports the first application of the Water Kefir grains as a protective tool against toxicity by heavy metal ions. The aim of this study is to evaluate the concentration of heavy metal ions in several Water Kefir solutions during the fermentation process under various conditions. Two colonies of Water Kefir grain were used, and the concentrations of Cd, Co, Cr, Cu, Mn, Ni, Pb, Ba, and Ca were measured in Water Kefir grain solutions at different contact times (0, 24, 48, and 72 hours), different pH values in citric and acetic buffers, and different Water Kefir grains/metal solution ratios, with and without sucrose (5%). Optical emission spectroscopy was used to measure the concentrations of metal ions. Among the tested experimental conditions, the best combination for pollution abatement is sucrose (5%), contact time 24 hours, starting pH = 4.5, acetate buffer, and Kefir grains/metal solution ratio 1 : 1. In these conditions, the heavy metal abatement by Water Kefir grains is particularly effective for Cr and Pb (70%) and good for Cu, Ni, and Mn (50%).

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“…Because the direct analysis of trace elements in food samples is still a difficult task with conventional analytical techniques, such as, atomic absorption spectrometry, inductively coupled plasma optical emission spectrometry, and spectrophotometry due to the low concentration of trace elements and the complex matrices which interferes with the determination (Hajiaghababaei et al, 2013). Therefore a pretreatment method is necessary prior to instrumental measurements in order to obtain accurate and reliable results.…”

Section: Introductionmentioning

confidence: 99%

Nanosized spongelike Mn3O4 as an adsorbent for preconcentration by vortex assisted solid phase extraction of copper and lead in various food and herb samples

et al. 2016

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Heavy metals determination in water and food samples after preconcentration by a new nanoporous adsorbent

Cited by 36 publications

References 29 publications

Determination of copper, nickel, manganese and cadmium ions in aqueous samples by flame atomic absorption spectrometry after simultaneous coprecipitation with Co(OH)2

Determination of copper, nickel, manganese and cadmium ions in aqueous samples by flame atomic absorption spectrometry after simultaneous coprecipitation with Co(OH)2

Pollution Abatement of Heavy Metals in Different Conditions by Water Kefir Grains as a Protective Tool against Toxicity

Nanosized spongelike Mn3O4 as an adsorbent for preconcentration by vortex assisted solid phase extraction of copper and lead in various food and herb samples

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