Selective cloud point extraction for the determination of cadmium in food samples by flame atomic absorption spectrometry

Xiang, Guoqiang; Wen, Shuguang; Wu, Xia; Jiang, Xiuming; He, Lijun; Liu, Yulan

doi:10.1016/j.foodchem.2011.10.053

Cited by 74 publications

(27 citation statements)

References 22 publications

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“…Recently, the cadmium levels of different beverages with and without alcohol by different detection techniques (stripping chronopotenti-ometry, ICP-MS, ICP-OES, TF-FAAS, derivative potentiometric stripping analysis, GF-AAS, flow injection-diode array detection-spectrophotometry, a novel liquid-phase microextraction coupled with FAAS, HG-AFS and ET-AAS) are investigated in detail. Flame atomic absorption spectrometry [Xiang et al, 2012], inductively coupled plasma-optical emission spectrometry [Marchisio et al, 2005;Lara et al, 2001], inductively coupled plasma mass spectrometry [Wu & Boyle, 1997], stripping chronopotentiometry [Lo Coco et al, 2006], derivative potentiometric stripping analysis [La Pera et al, 2003], graphite furnace atomic absorption spectrometry [Schiavo et al, 2008;Ajtony et al, 2008;Dessuy et al, 2011], a novel liquid-phase microextraction coupled with flame atomic absorption spectrometry [Wu et al, 2011], a sequential injection hydride generation atomic fluorescence spectrometry [Duan et al, 2005], and electrothermal atomic absorption spectrometry [Farinas et al, 2007;Jurado et al, 2007] have also been applied for the determination of cadmium in different beverages and food samples. Although some of these techniques are sophisticated and have a high detection power, but they are relatively expensive, time-consuming, need experienced user in its area and not available in all laboratories.…”

Section: Introductionmentioning

confidence: 99%

Determination of Trace Cd in Alcoholic and Nonalcoholic Beverages by Coupling Cloud Point Extraction with Spectrophotometry

Gürkan¹,

Altunay²

2013

Pol. J. Food Nutr. Sci.

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A cloud-point extraction (CPE) process using the nonionic surfactant, Triton X-114 to extract Cd(II) ions from aqueous solutions was investigated. The method is based on the ion-pairing reaction of Cd(II) with Victoria blue B (VBB + ) in presence of excess iodide at pH 4.0 and extraction of the complex formed. The chemical variables affecting CPE efficiency were studied, and the analytical characteristics of the method were obtained. The calibration curves were obtained in the ranges of 1.0-30 and 10-500 µg/L for Cd(II) ion with the detection limits of 0.34 and 3.8 µg/L at 608 and 634 nm, respectively. The selectivity study was also tested. The precision (N: 5, 25 µg/L) was 2.85% relative standard deviation. The results obtained for two certified reference samples were in a good agreement with the certified values. The method was successfully applied to the determination of Cd(II) in beverage samples.Brought to you by | MIT Libraries Authenticated Download Date | 5/10/18 11:53 PM

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Section: Introductionmentioning

confidence: 99%

Determination of Trace Cd in Alcoholic and Nonalcoholic Beverages by Coupling Cloud Point Extraction with Spectrophotometry

Gürkan¹,

Altunay²

2013

Pol. J. Food Nutr. Sci.

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“…The accuracy of the proposed procedure was assessed by the analysis of certified reference materials (CRM), and the observed values for Cd were found to be in good agreement with the certified values ( Table 3). The proposed methodology was compared to other CPE methods reported recently in the literature [16,[30][31][32][33][34][35][36][37]. The distinct features are summarized in Table 4.…”

Section: Analytical Featuresmentioning

confidence: 99%

Application of Cloud Point Extraction for Cadmium in Biological Samples of Occupationally Exposed Workers: Relation Between Cadmium Exposure and Renal Lesion

Mortada

Hassanien

Donia

et al. 2015

Biol Trace Elem Res

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Cadmium (Cd) level in blood and urine of soldering iron workers (n=49) and 41 matched healthy controls has been assessed. Cloud point extraction was employed for preconcentration of Cd. The Cd ions formed hydrophobic complex with 9,10-phenanthraquinone monoethyl thiosemicarbazone that was extracted by surfactant-rich phases in the nonionic surfactant Triton X-114. The surfactant-rich phase was diluted with 1 M HNO3 in methanol prior to its analysis by graphite furnace atomic absorption spectrometry. The parameters affecting the extraction efficiency of the proposed method, such as solution pH, amount of complexing agent, surfactant concentration, temperature, and incubation time, were optimized. Under the optimum experimental conditions, the detection limit and the enrichment factor were 0.04 μg L(-1) and 61, respectively. Relative standard deviation of 10 μg L(-1) Cd was less than 3.0%. The accuracy of the method was examined by analysis of certified reference materials. It was observed that soldering iron workers are liable to Cd overload as indicated by higher levels of Cd in blood and urine when compared with the controls. This exposure may lead to kidney damage indicated by elevation of urinary excretion of both N-acetyl-β-D-glucosaminidase and β2-microglobulin.

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“…The results show that the potentials of the sensor remain constant from pH of 3.0 to 7.0. Under more acidic conditions, the ligand may be protonated and thereby lose its capacity to form a complex with the metal ions, whereas for the higher pH values , the hydroxyl ions in the solution react with Cd(II) to make Cd(OH) 2 .…”

Section: Influences Of Phmentioning

confidence: 99%

“…Different instrumental methods such as flame atomic absorption spectrometry (FAAS), 2 graphite furnace atomic absorption spectrometry (GFAAS), 3 inductively coupled plasma atomic emission spectrometric (ICP-AES), 4 and electrochemical methods 5 have been used for cadmium determination. Among these methods, potentiometric methods using ion sensors are common due to their accuracy, high rate, low cost and also being non-destructive 6 .…”

Section: Introductionmentioning

confidence: 99%

Determination of Cadmium (II) Ions in Environmental Samples : A Potentiometric Sensor

Karimi¹,

Aboufazeli²,

ZHAD³

et al. 2012

Curr World Environ

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A sensor electrode was modified by multi-walled carbon nanotubes functionalized by dithizone. The electrode was used for determination of trace amounts of cadmium (II) ions. The electrode composition was 67% graphite powder, paraffin 23%, 10% modified MWCNTs (W/W). The linear range for lead (II) was 1.8×10 -7 to 1.0×10 -4 mol L "1 and the limit of detection was obtained 1.0×10-7 mol L "1 . The lifetime of the electrode was 12 weeks and a fast response time was observed. The electrode was used for determination of trace amounts of Cd(II) ions in standard reference materials of water and soil.

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Selective cloud point extraction for the determination of cadmium in food samples by flame atomic absorption spectrometry

Cited by 74 publications

References 22 publications

Determination of Trace Cd in Alcoholic and Nonalcoholic Beverages by Coupling Cloud Point Extraction with Spectrophotometry

Determination of Trace Cd in Alcoholic and Nonalcoholic Beverages by Coupling Cloud Point Extraction with Spectrophotometry

Application of Cloud Point Extraction for Cadmium in Biological Samples of Occupationally Exposed Workers: Relation Between Cadmium Exposure and Renal Lesion

Determination of Cadmium (II) Ions in Environmental Samples : A Potentiometric Sensor

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