Ultrasound assisted-hollow fibre liquid-phase microextraction for the determination of selenium in vegetable and fruit samples by using GF-AAS

Shrivas, Kamlesh; Patel, Devesh Kumar

doi:10.1016/j.foodchem.2010.07.054

Cited by 81 publications

(33 citation statements)

References 24 publications

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“…The separation techniques with high efficiency in combination of elemental detectors with high sensitivity are still the mainstream methods for the purposes. While high performance liquid chromatography (HPLC), gas chromatography (GC), and capillary electrophoresis (CE) are the popular separation techniques, ICP/ MS, 4-6 ICP-atomic emission spectrometry (ICP/AES), 7,8 atomic fluorescence spectrometry (AFS), 9,10 atomic absorption spectrometry (AAS) 11 are often used as the detection mode for the chromatographic or electrophoretic effluent. Different to the need of chemical derivatization for GC and the low loading of CE, HPLC can be used for the separation of almost all of analytes because there are various choices for the stationary and mobile phase with mL level sample loading (a few orders of magnitude higher than CE).…”

Section: Introductionmentioning

confidence: 99%

Quantitative Speciation of Selenium in Human Blood Serum and Urine with AE- RP- and AF-HPLC-ICP/MS

Jeong¹,

Lee²,

Pak

2013

Bulletin of the Korean Chemical Society

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Various separation modes in HPLC, such as anion exchange (AE), reversed-phase (RP), and affinity (AF) chromatography were examined for the separation of selenium species in human blood serum and urine. While RP-and AE-HPLC were mainly used for the separation of small molecular selenium species, double column AF-HPLC achieved the separation of selenoproteins in blood serum efficiently. Further, the effluent of AF-HPLC was enzymatically hydrolyzed and then analyzed with RP HPLC for selenoamino acid study. The versatility of the hybrid technique makes the in-depth study of selenium species possible. For quantification, post column isotope dilution (ID) with 78Se spike was performed. ORC ICP/MS (octapole reaction cell inductively coupled plasma/mass spectrometry) was used with 4 mL min −1 Hydrogen as reaction gas. In urine sample, inorganic selenium and SeCys were identified. In blood serum, selenoproteins GPx, SelP and SeAlb were detected and quantified. The concentration for GPx, SelP and SeAlb was 22.8 ± 3.4 ng g Enzymatic hydrolysis of each selenium proteins revealed that SeCys is the major amino acid for all three proteins and SeMet is contained in SeAlb only.

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Section: Introductionmentioning

confidence: 99%

Quantitative Speciation of Selenium in Human Blood Serum and Urine with AE- RP- and AF-HPLC-ICP/MS

Jeong¹,

Lee²,

Pak

2013

Bulletin of the Korean Chemical Society

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“…Importantly, ethanol is less toxic compared with methanol, carbon tetrachloride, and other organic solvents commonly used in extraction. Shrivas and co-workers [24] attained relatively good detection limits but poor enrichment factors and precisions in applying this method. In contrast, other researchers [17] attained good detection limits, precisions, and enrichment factors.…”

Section: Remarks Limitations and Future Trends Of Selenium Microextrmentioning

confidence: 99%

“…a USA-DLLME, b USA-IL-DLLME Unauthenticated Download Date | 5/10/18 11:22 AM [24]. It was applied to the determination of selenium in vegetable and fruit samples.…”

Section: [9]mentioning

confidence: 99%

Recent Microextraction Techniques for Determination and Chemical Speciation of Selenium

et al. 2017

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Abstract:Research designed to improve extraction has led to the development of microextraction techniques (ME), which involve simple, low cost, and effective preconcentration of analytes in various matrices. This review is concerned with the principles and theoretical background of ME, as well as the development of applications for selenium analysis during the period from 2008 to 2016. Among all ME, dispersive liquid-liquid microextraction was found to be most favorable for selenium. On the other hand, atomic absorption spectrometry was the most frequently used instrumentation. Selenium ME have rarely been coupled to spectrophotometry and X-ray spectrophotometry methods, and there is no published application of ME with electrochemical techniques. We strongly support the idea of using a double preconcentration process, which consists of microextraction prior to preconcentration, followed by selenium determination using cathodic stripping voltammetry (ME-CSV). More attention should focus on the development of accurate, precise, and green methods for selenium analysis.

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“…Selenium can be determined by high performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP-MS) [4], hydride generator atomic absorption spectroscopy (HG-AAS) [5], graphite furnace atomic absorption spectroscopy (GF-AAS) [6], gas chromatography (GC) [7], and various electroanalytical techniques (i.e., anodic stripping voltammetry (ASV), cathodic stripping voltammetry (CSV), and adsorptive stripping voltammetry (AdSV)), which exhibit a high sensitivity and are inexpensive [8].…”

Section: Introductionmentioning

confidence: 99%

Development of electrochemical sensors for the determination of selenium using gold nanoparticles modified electrodes

Segura

Pìzarro

Díaz

et al. 2015

Sensors and Actuators B: Chemical

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Ultrasound assisted-hollow fibre liquid-phase microextraction for the determination of selenium in vegetable and fruit samples by using GF-AAS

Cited by 81 publications

References 24 publications

Quantitative Speciation of Selenium in Human Blood Serum and Urine with AE- RP- and AF-HPLC-ICP/MS

Quantitative Speciation of Selenium in Human Blood Serum and Urine with AE- RP- and AF-HPLC-ICP/MS

Recent Microextraction Techniques for Determination and Chemical Speciation of Selenium

Development of electrochemical sensors for the determination of selenium using gold nanoparticles modified electrodes

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