New Method for Simultaneous Arsenic and Selenium Speciation Analysis in Seafood and Onion Samples.

Publisher: MDPI Country of Publication: Switzerland NLM ID: 100964009 Publication Model: Electronic Cited Medium: Internet ISSN: 1420-3049 (Electronic) Linking ISSN: 14203049 NLM ISO Abbreviation: Molecules Subsets: MEDLINE

Original Publication: Basel, Switzerland : MDPI, c1995-

Arsenic/*analysis ; Food Contamination/*analysis ; Onions/*chemistry ; Onions/*toxicity ; Seafood/*analysis ; Seafood/*toxicity ; Selenium/*analysis; Animals ; Arsenic Poisoning ; Arsenicals/analysis ; Chromatography, High Pressure Liquid ; Chromatography, Ion Exchange ; Humans ; Mass Spectrometry ; Organoselenium Compounds/analysis ; Organoselenium Compounds/toxicity ; Selenium Compounds/analysis ; Selenium Compounds/toxicity

This paper presents a new method for the simultaneous speciation analysis of arsenic (As(III)-arsenite, As(V)-arsenate, DMA-dimethylarsinic acid, MMA-methylarsonic acid, and AsB-arsenobetaine) and selenium (Se(IV)-selenite, Se(VI)-selenate, Se-Methionine, and Se-Cystine), which was applied to a variety of seafood and onion samples. The determination of the forms of arsenic and selenium was undertaken using the High-Performance Liquid Chromatography Inductively Coupled Plasma Mass Spectrometry (HPLC-ICP-MS) analytical technique. The separation of both organic and inorganic forms of arsenic and selenium was performed using two analytical columns: an anion exchange column, Dionex IonPac AS22, containing an alkanol quaternary ammonium ion, and a double bed cation-anion exchange guard column, Dionex Ion Pac CG5A, containing, as a first layer, fully sulfonated latex for cation exchange and a fully aminated layer for anion exchange as the second layer. The ammonium nitrate, at pH = 9.0, was used as a mobile phase. The method presented here allowed us to separate the As and Se species within 10 min with a suitable resolution. The applicability was presented with different sample matrix types: seafood and onion.

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Keywords: LC–ICP–MS; arsenic; onion samples; seafood samples; selenium; simultaneous speciation analysis

0 (Arsenicals)
0 (Organoselenium Compounds)
0 (Selenium Compounds)
H6241UJ22B (Selenium)
N712M78A8G (Arsenic)

Date Created: 20211023 Date Completed: 20211117 Latest Revision: 20240403

20250114

PMC8539270

10.3390/molecules26206223

34684804