This study deals with As speciation in white wine. Arsenic species were selectively determined by liquid
chromatography–inductively coupled plasma–mass spectrometry (LC–ICP–MS). Separation of As species
was performed using an anion exchange column with ammonium phosphate solution (pH 6.00) as mobile
phase. Samples of 14 white wine produced in South America were analysed. They were 10-fold diluted in
the mobile phase prior to analysis by LC–ICP–MS. Accuracy was evaluated by recovery tests, whereas As
species recovery ranged from 95% to 106%. Additionally, the sum of arsenic species concentration found
by LC–ICP–MS was in agreement with the total arsenic concentration determined by ICP–MS after sample
digestion. Arsenic species detected were arsenite [As(III)], arsenate [As(V)] and dimethylarsinic acid
(DMA). As(III) and As(V) were detected in all analysed wine samples and DMA was detected only in wines
produced in Argentina. Results for As determination in samples were from 2.9 to 10.3, 8.6 to 17.8,
and <0.45 to 1.07 lg L1 for As(III), As(V) and DMA, respectively
การแปล กรุณารอสักครู่..
