Simultaneous determination of cadmium, iron and tin in canned foods using high-resolution continuum source graphite furnace atomic absorption spectrometry

Leão, Danilo Junqueira; M.S., Mario; Brandão, Geovani Cardoso; Ferreira, Sérgio L.C.

doi:10.1016/j.talanta.2016.02.023

Cited by 48 publications

(20 citation statements)

References 30 publications

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“…Many analytical methods had been developed to determine Fe species concentrations such as spectrophotometry 16 , 17 , atomic absorption spectrometry (AAS) 18 , 19 , inductively coupled plasma-mass spectrometry (ICP-MS) 20 , 21 chemiluminescence 22 – 24 and fluorescence 25 , among others. However, most of these methods require complex and expensive analytical equipment, limiting their potential application.…”

Section: Introductionmentioning

confidence: 99%

Speciation determination of iron and its spatial and seasonal distribution in coastal river

Zhu

Pan

et al. 2018

Sci Rep

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In this study, the speciation of iron (Fe), including total Fe (TFe) and acidified dissolved Fe (ADFe), was assessed by fast cathodic absorption stripping voltammetry, using a gold electrode and 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) as a novel complexing agent for Fe. The validity and accuracy of this method were compared with the standard spectrophotometry and tested by the standard samples. Under optimized conditions, the Fe response was linear within the range of 0.01 to 1 μM with a detection limit of 1.2 nM. To further validate this method, the variation in concentrations of TFe and ADFe were investigated at twelve sampling stations in a local coastal river, in both the dry and wet season. Additionally, to further understand the interaction between Fe and environmental factors, the relationships between the concentration of Fe species and dissolved oxygen (DO) and salinity were also discussed.

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Section: Introductionmentioning

confidence: 99%

Speciation determination of iron and its spatial and seasonal distribution in coastal river

Zhu

Pan

et al. 2018

Sci Rep

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“…The equilibrium data were analyzed using Langmuir (7) and Freundlich (8) models to explain the removal mechanism of the Pb(II) ions onto the PPPC surface. Where Q e (mmol/g) is the adsorbed amount of metal ions at equi- precision and accuracy of the proposed method.…”

Section: Equilibrium Observationmentioning

confidence: 99%

“…Because of heavy metals hazardous effects, even small concentrations of heavy metals can make human and environmental health risk. So, the removal of heavy metals from aqueous solutions is a very importance issue [7][8][9]. There are many methods for removing heavy metals as ion exchange, nanofiltration, precipitation, reverse osmosis and adsorption but among these methods solid phase extraction is still favorite one due to low cost, simplicity and potential for overcoming the environmental problems [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Detection and removing of lead from wastewater using chemical treatment of polyurethane foam waste: Batch and column experiments

Moawed¹,

El-Hagrasy²,

Kamal³

2019

Desalination and Water Treatment

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A new inexpensive sorbent was prepared from the waste of polyurethane foam (PUF) which highly surface polarity and sorption capacity. PUF was modified by adding amino, chloro and hydroxyl groups to its matrix. The polyamine polyhydroxy polyurethane chloride (PPPC) was characterized by using elemental analysis (EA), bulk conductivity (BC,σ), infrared/ultraviolet/visible spectra (IR/UV/Vis), pH point zero charge (pH ZCP), thermal analysis (TGA/DTA/DSC), scanning electron microscope (SEM) and X-ray diffraction (XRD). The PPPC owned improved stability in acidic/alkaline solutions and organic solvents. The pH ZPC of PPPC was 5.1 and the maximum values of ∆pH of PPPC are + 1.5 and-3.8 at pH 3.2 and pH 8.3. The σ of PPPC was 2.6×10-5 Ω-1 m-1. PPPC contains several active groups (NH 2 , Cl, OH, C=O, C=C, and CO -C) which classified as an effective sorbent for the solid-phase extraction (SPE) of Pb(II) ions from wastewater. The removing rate of the Pb(II) ions onto PPPC was very fast with half-life time (t 1/2) 1.13 min at pH range 3-7. The value of ∆Η for the sorption Pb(II) ions were-22.9 kJ/mol; these revealed that the values the extraction process is exothermic in nature. The recovery percentage of Pb(II) ions are 99-105% with relative standard deviation (RSD) 2.49% (n = 7).

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“…Some of them, like for example inductively coupled plasma mass spectrometry ICP‐MS and inductively coupled plasma optical emission spectrometry ICP‐OES are high sensitive and can reach very low detection limits, what is undoubtedly an advantage, but unfortunately the equipment is very expensive. Another method is atomic absorption spectrometry AAS which is simple and convenient but the influence of the matrix sometimes can even make measurement impossible. Examples of using UV‐vis spectrophotometry and spectrofluorimetry for iron determination were also reported.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive AdSV Method for Fe(III) Determination in Presence of Solochrome Violet RS on Renewable Amalgam Film Electrode

2019

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The new DP AdSV method for high sensitive Fe(III) determination in the presence of Solochrome Violet RS was developed. The use of an innovative renewable amalgam film electrode Hg(Ag)FE allowed to obtain high sensitivity and significantly minimize the mercury consumption. The best results were obtained for surface area of Hg(Ag)FE equal to 11.8 mm2. Instrumental parameters were optimized. The optimal results were obtained using differential pulse technique for the following values: sampling and waiting time ts=tw=10 ms, step potential Es=5 mV, pulse amplitude ΔE=50 mV. Measurements were conducted in 0.05 M acetate buffer (pH 5.6), the concentration of SVRS was equal to 5 μM. Deposition step was carried out at the potential −400 mV for 20 s. Calculated detection limit for 40 s preconcentration time was equal to 1.4 nM (78 ng L−1). The influence of the common in environment, organic and inorganic interferences was studied. The developed method for Fe(III) determination was successfully applied and validated by investigation of certified reference material SPS‐SW2 Batch 118 and recovery of Fe(III) from various spiked samples as snow, tap water and bottom sediments. The repeatability (for 50 nM of Fe(III)) of the developed method expressed as CV was equal 3.1 % (n=5).

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Simultaneous determination of cadmium, iron and tin in canned foods using high-resolution continuum source graphite furnace atomic absorption spectrometry

Cited by 48 publications

References 30 publications

Speciation determination of iron and its spatial and seasonal distribution in coastal river

Speciation determination of iron and its spatial and seasonal distribution in coastal river

Detection and removing of lead from wastewater using chemical treatment of polyurethane foam waste: Batch and column experiments

Highly Sensitive AdSV Method for Fe(III) Determination in Presence of Solochrome Violet RS on Renewable Amalgam Film Electrode

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