A feasible method for As speciation in several types of seafood by LC-ICP-MS/MS.

Authors :: Schmidt L
Landero JA
Novo DR
Duarte FA
Mesko MF
Caruso JA
Flores EMM
Source :: Food chemistry [Food Chem] 2018 Jul 30; Vol. 255, pp. 340-347. Date of Electronic Publication: 2018 Feb 15.
Publication Year :: 2018
Abstract: A method for arsenic speciation in shark, shrimp, squid, oyster and scallop using liquid chromatography coupled to inductively coupled plasma triple quadrupole mass spectrometry (LC-ICP-MS/MS) was proposed. Suitable sensitivity and selectivity by LC-ICP-MS/MS were obtained using 10 mmol L <superscript>-1</superscript> (NH <subscript>4</subscript> ) <subscript>2</subscript> HPO <subscript>4</subscript> diluted in 1% methanol (pH 8.65) as mobile phase. Recoveries from 90 to 104% for arsenobetaine (AsB), arsenite [As(III)], dimethylarsinic acid (DMA), monomethylarsonic acid (MMA) and arsenate [As(V)] were obtained for all samples. A certificated reference material was also analyzed and the sum of As species was in agreement with the total As concentration. Limits of quantification (LOQ) for AsB, As(III), DMA, MMA, and As(V) were 6, 30, 6, 12 and 26 ng g <superscript>-1</superscript> , respectively. Higher concentration of AsB was found in all seafood, while As(III) and DMA were found only in oyster. Arsenate was found in squid and scallops, and MMA was below the LOQ in all samples.<br /> (Copyright © 2018 Elsevier Ltd. All rights reserved.)

Subjects :: Arsenates analysis
Arsenicals analysis
Arsenites analysis
Cacodylic Acid analysis
Chromatography, Liquid
Feasibility Studies
Sensitivity and Specificity
Tandem Mass Spectrometry
Arsenic analysis
Seafood analysis

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