Methodological aspects of speciation analysis in food products

Wróbel, Katarzyna; Wróbel, Kazimierz

doi:10.1002/9781118654316.ch18

Cited by 4 publications

(3 citation statements)

References 242 publications

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“…Для разделения oAs и iAs в биологических объектах и воде существует несколько общепринятых методик [19]. Самой простой является выделение iAs с помощью кислотной экстракции при кипячении в аппарате Сокслета с последующим полуколичественным колориметрическим определением содержания мышьяка 5 по интенсивности окрашивания испытуемого раствора.…”

Section: Introductionunclassified

“…Наиболее перспективными являются методики, основанные на экстракции соединений мышьяка из органической матрицы с последующими разделением и идентификацией их спектральными методами [20]. Максимальную чувствительность и информативность обеспечивает сочетание жидкостного хроматографа и масс-спектрометрического детектора с индуктивно-связанной плазмой (ИСП-МС), предусматривающее предварительную экстракцию соединений мышьяка различными методами [15,19,[23][24][25][26]. Аппаратурное оснащение для таких методик является дорогостоящим.…”

Section: Introductionunclassified

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Selective Quantification of Organic and Inorganic Arsenic in Kelp Thalli and Kelp-Based Products

Щукин¹,

Ерина²,

Shvetsova³

et al. 2023

Vedomosti Nauchnogo tsentra ekspertizy sredstv meditsinskogo pr

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Kelp can accumulate large quantities of arsenic compounds even in the absence of considerable environmental pollution. A substantial difference in toxicity between organic and inorganic arsenic compounds makes the form of arsenic relevant for the risk assessment of consuming kelp thalli and kelp-based products.The aim of the study was to develop an analytical procedure for the selective quantification of organic and inorganic arsenic in kelp thalli by inductively coupled plasma mass spectrometry and solid-phase extraction without scheduled precursors.Materials and methods. The authors studied samples of Laminaria saccharina and Laminaria japonica, spiking mixtures of chemical compounds containing arsenic in different oxidation states, and bioactive dietary supplements based on kelp thalli. Solid-phase extraction was performed using Maxi-Clean SAX cartridges. The arsenic content was determined using an Agilent 7900 inductively coupled plasma mass spectrometer.Results. Microwave-assisted extraction with deionised water ensures 91% recovery of arsenic-containing compounds from kelp thalli, and the addition of hydrogen peroxide to the extractant provides complete extraction. Solid-phase extraction with an eluent based on 3% H2O2 can extract the organic fraction from a mixture of organic and inorganic arsenic compounds without washing the inorganic fraction off the cartridge.Conclusions. The authors offer an effective analytical procedure for the selective quantification of organic and inorganic arsenic in kelp thalli and kelp-based products. This procedure allows for the isolation of arsenic-containing compounds from the organic matrix of kelp with 3% hydrogen peroxide. Solid-phase extraction with this extractant can effectively separate organic and inorganic fractions without prior neutralisation of the test solution.

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Section: Introductionunclassified

Selective Quantification of Organic and Inorganic Arsenic in Kelp Thalli and Kelp-Based Products

Щукин¹,

Ерина²,

Shvetsova³

et al. 2023

Vedomosti Nauchnogo tsentra ekspertizy sredstv meditsinskogo pr

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“…Only in special cases, an analysis by A-IEC is complemented by a parallel analysis using cationic IEC for the determination of cationic species. Of the many articles published recently, the reviews [21][22][23] can be recommended.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Main Arsenic Species in Canned Fish Marketed in the Czech Republic and Austria

Kaňa¹,

Koplík²,

Braeuer³

et al. 2018

J Food Chem Nanotechol

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Total arsenic and water-soluble arsenic species were determined in canned fish bought in Graz (n = 6) and Prague (n = 8) with inductively-coupled plasma mass spectrometry and anion-exchange liquid chromatography. A difference in total arsenic content between samples from Prague (mean 3.4; standard deviation (s.d.) 1.2 mg kg -1 ) and Graz (mean 2.5; s.d. 0.7 mg kg -1 ) was not significant, however Prague samples differed in abundance of arsenobetaine (mean 83% of extractable arsenic; s.d. 16%) vs. Graz samples (mean 66%; s.d. 10%). No differences in total arsenic were caused by fish species (mackerel, sardine, herring, tuna) and origin (Northeast and Eastern-central Atlantic).

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Nanoparticles as a younger member of the trace element species family — a food perspective

Gajdosechova,

Loeschner

2023

Anal Bioanal Chem

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Speciation analysis plays a key role in understanding the biological activity and toxicity of an element. So far, classical speciation analysis focused only on the dissolved fraction of an elemental species, whereas nanoparticle forms of analytes are being widely found in consumer and industrial products. A significant contributor to human exposure to nanoparticles is through food into which nanoparticles can be incorporated from endogenous sources or they may be formed naturally in the living organisms. Nanoparticles often undergo changes in the food matrices and upon consumption, in the gastrointestinal tract, which present a significant challenge to their characterisation. Therefore, a combination of both classical and nanoparticle speciation analytical techniques is needed for the characterisation of both dissolved and particulate forms of the chemical species. This article presents and discusses the current trends in analysis of nanoparticle behaviour in the gastrointestinal tract and formation and characterisation of biogenic nanoparticles. Graphical Abstract

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Methodological aspects of speciation analysis in food products

Cited by 4 publications

References 242 publications

Selective Quantification of Organic and Inorganic Arsenic in Kelp Thalli and Kelp-Based Products

Selective Quantification of Organic and Inorganic Arsenic in Kelp Thalli and Kelp-Based Products

Analysis of Main Arsenic Species in Canned Fish Marketed in the Czech Republic and Austria

Nanoparticles as a younger member of the trace element species family — a food perspective

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