| Literature DB >> 29571485 |
Lucas Schmidt1, Julio Alberto Landero2, Diogo La Rosa Novo3, Fabio Andrei Duarte1, Marcia Foster Mesko3, Joseph A Caruso2, Erico Marlon Moraes Flores4.
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-1 (NH4)2HPO4 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-1, 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.Entities:
Keywords: Arsenic speciation; Extraction; Food safety; Inductively coupled plasma triple quadrupole mass spectrometry; Liquid chromatography; Sample preparation
Mesh：
Substances：
Year: 2018 PMID： 29571485 DOI： 10.1016/j.foodchem.2018.02.079
Source DB: PubMed Journal: Food Chem ISSN： 0308-8146 Impact factor: 7.514