Inexpensive and versatile method for trace Sn(II) and Sn(IV) ions in food samples by CPE/FAAS

Ulusoy, Songül; Ulusoy, Halil İ̇brahim; Akçay, Mehmet; Gürkan, Ramazan

doi:10.1016/j.foodchem.2012.02.084

Cited by 31 publications

(17 citation statements)

References 25 publications

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“…As can be understood from Table 6, a sensitivity improvement has been achieved by the method when compared to previously reported works using CPE/ UV-vis including FAAS and ET-AAS. The detection limit is lower than those of the reported other methods (Abedi and Ebrahimzadeh 2013;Ulusoy et al 2012;Gholivanda et al 2008;Huang et al 1997 andJamshid et al 2006) for except (Madrakian and Ghazizadeh 2009). Also, it has relatively a wider working range and good precision at low concentrations.…”

Section: Analytical Applicationsmentioning

confidence: 65%

“…This is probably due to the thermal instability of the hydrophobic ion-association complex or ternary complex of Sn(IV) ion formed with tartaric acid and Celestine blue in presence of SDS and Triton X-114. Hence, an incubation temperature of 50°C was selected as optimum for further studies (Ulusoy et al 2012).…”

Section: Effect Of Equilibration Temperature and Timementioning

confidence: 99%

“…Separation and enrichment procedures such as micelle-mediated cloud point extraction (CPE) (Ulusoy et al 2012;Gholivanda et al 2008), coprecipitation (Ueda et al 1988), solid-phase extraction (SPE) (Zaporozhets et al 2001), solvent extraction (SE) (Alvarez et al 2002), and liquid-liquid extraction (LLE) (Martin et al 1994) were reported for determination of tin in food and beverages samples. In this study, CPE is preferred as a separation and enrichment procedure.…”

Section: Introductionmentioning

confidence: 99%

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An Inexpensive and Sensitive Method for Speciative Determination of Sn(IV), Sn(II), and Total Sn as Sn(IV) in Selected Beverages by Micellar Improved Spectrophotometry

Altunay

Gürkan

2014

Food Anal. Methods

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In the present study, an inexpensive, selective, and micellar sensitive spectrophotometric method for Sn(IV) was developed at 537 nm. The method is based on the formation of ternary complex of Sn(IV) with tartaric acid and Celestine blue in the presence of sodium dodecyl sulfate (SDS) and polyethylene glycol tert-octylphenyl ether (Triton X-114) at pH 3.5. The analytical variables affecting cloud point extraction (CPE) efficiency were optimized in detail. Under the optimized conditions, the calibration graph was linear in the range of 4-350 μg L −1 with changing dye concentration for Sn(IV) ions. The limits of detection and quantification of the method were found to be 1.3 and 4.3 μg L −1 for Sn(IV), respectively. Relative standard deviation (RSDs) for five replicate determinations at 20 and 100 μg L −1 concentration levels were 4.4 and 1.5 %, respectively. Recovery values of spiked samples were obtained in range of 97.7-103.3 %. Matrix effect on the extraction efficiency were also investigated. The method was successfully applied to the determination of Sn(II), Sn(IV) and total Sn in some selected beverages before and after pretreatment with H 2 O 2 in acidic media, prior to analysis. Validity of the method was controlled through the analysis of two certified reference materials. It has been observed that the results are highly compatible with the certified values.

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Section: Analytical Applicationsmentioning

confidence: 65%

Section: Effect Of Equilibration Temperature and Timementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Inexpensive and Sensitive Method for Speciative Determination of Sn(IV), Sn(II), and Total Sn as Sn(IV) in Selected Beverages by Micellar Improved Spectrophotometry

Altunay

Gürkan

2014

Food Anal. Methods

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“…These methods are: electrochemistry [1][2][3][4][12][13][14][15][16][17][18][19], membrane sensor [18], inductively coupled plasma-optical emission spectrometry (ICP-OES) [19], flame atomic absorp tion spectrometry (FAAS) [20], fluorescence [21], and spectrophotometry [22][23][24][25][26][27][28][29]. The electrochemi cal method, which includes anodic stripping voltam metry (ASV) [1][2][3][4]12] and differential pulse polarog 1 The article is published in the original.…”

mentioning

confidence: 99%

“…However, recovery of tin(II) in solution was less than 90% [19]. Cloud point extraction (CPE) followed by FAAS is another method that can quantify tin(II and IV) in a low con centration range (0.01-1.3 μg/mL), but the CPE pro cedure is complicated (including pH and temperature adjustment, centrifugation, and cooling in an ice bath) [20]. Quenching the fluorescence of carbon nano dots (C dots) by tin(II) was found to enable detection of tin(II) concentrations between 0 to 476 μg/mL.…”

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confidence: 99%

Spectrophotometric determination of tin(II) by redox reaction using 3,3′,5,5′-tetramethylbenzidine dihydrochloride and N-bromosuccinimide

2015

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5661 Tin(II) compounds are important in 99m Tc radiop harmaceutical kits as stabilizing agents [1], in dental gels and food as preservatives [2][3][4], and in electroless plating as electrochemical catalysts [5][6][7][8]. Common methods to determine tin(II) are limited by some combination of the range and/or limit of detection, ease of application, reproducibility, and inability to distinguish tin(II) from tin(IV). A need to rapidly quantitate tin(II) concentration in an electroless plat ing sensitization solution at concentrations less than 0.3 µg/mL to evaluate its effectiveness motivated the development of the present colorimetric approach. A spectrophotometric approach was selected which complements the existing spectrophotometric meth ods for quantification of boron [9], vanadium(IV) [10], and mercury(II) [11]. Common methods for determining tin(II) concen tration are summarized in Table 1. These methods are: electrochemistry [1-4, 12-19], membrane sensor [18], inductively coupled plasma-optical emission spectrometry (ICP-OES) [19], flame atomic absorp tion spectrometry (FAAS) [20], fluorescence [21], and spectrophotometry [22-29]. The electrochemi cal method, which includes anodic stripping voltam metry (ASV) [1-4, 12] and differential pulse polarog 1 The article is published in the original.raphy (DPP) [13][14][15][16][17], has been widely used because of selective determination of tin(II) in the presence of tin(IV). The ASV method has a low LOD. For exam ple, a LOD equal to 0.00026 µg/mL was achieved by Hutton et al. by using the ASV method with a bismuth film electrode [3]. However, the limitation of the ASV method is that it requires either formation of a tin(II) complex such as a tin(II)-oxine [1] or a tin(II)-tropolone [2], or use of a modified electrode such as an epoxy carbon electrode or the BiFE [3, 4, 12]. The DPP method does not require a tin(II) complex or a modified electrode but it is limited by the detection range and the LOD. Decristoforo et al. [14] reported a DPP method with a LOD of 0.005 µg/mL but the con centration range was from 10 to 15 µg/mL. Similarly, using the DPP method, Sebastian et al. [15] quantified tin(II) within the concentration range 0 to 10 µg/mL but the LOD was 0.5 µg/mL.Recently published methods based on membrane sensor, ICP, FAAS, and fluorescence quenching im proved the detection concentration range and the LOD, but the constraints in the methods limit their usage. The tin(II) selective potentiometric membrane sensor method was reported to have a concentration range of 0.013 to 1190 µg/mL and a low LOD of 0.0025 µg/mL, but preparation of the membrane elec trode was work intensive [18]. ICP-OES was used to Abstract-A rapid, straightforward spectrophotometric method based on the redox reaction of tin(II) with a mixture of N bromosuccinimide (NBS) and 3,3',5,5' tetramethylbenzidine dihydrochloride (TMB) was developed for determining low concentrations of tin(II). The redox method improved sensitivity by 2.3 fold relative to the existing spectrophotometric methods by t...

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Methodological aspects of speciation analysis in food products

Wróbel¹,

Wróbel²

2015

Handbook of Mineral Elements in Food

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Inexpensive and versatile method for trace Sn(II) and Sn(IV) ions in food samples by CPE/FAAS

Cited by 31 publications

References 25 publications

An Inexpensive and Sensitive Method for Speciative Determination of Sn(IV), Sn(II), and Total Sn as Sn(IV) in Selected Beverages by Micellar Improved Spectrophotometry

An Inexpensive and Sensitive Method for Speciative Determination of Sn(IV), Sn(II), and Total Sn as Sn(IV) in Selected Beverages by Micellar Improved Spectrophotometry

Spectrophotometric determination of tin(II) by redox reaction using 3,3′,5,5′-tetramethylbenzidine dihydrochloride and N-bromosuccinimide

Methodological aspects of speciation analysis in food products

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