Effect of sample preparation procedure for the determination of As, Sb and Se in fruit juices by HG-ICP-OES.
Various sample preparation procedures for the simultaneous determination of As, Sb and Se in fruit juices by hydride generation inductively coupled plasma optical emission spectrometry (HG-ICP-OES) were examined. Applicability of total wet digestion with HNO3/H2O2, partial decomposition (solubilisation in aqua regia), 1:1 dilution with 2% (v/v) HNO3 and direct analysis were evaluated. Hydrides were generated in the reaction of an acidified sample with NaBH4 after pre-reduction with KI-ascorbic acid for total As and Sb, and boiling with HCl for total Se. Best results, i.e. limits of detection (LODs) of 0.51-0.73 ng mL(-1), precision (RSD) within 1.7-3.6% and recoveries for spiked samples between 101% and 106% were found using aqua regia treatment. This procedure simplifying and improving sample preparation step prior to As, Sb and Se measurements in fruit juices by HG-ICP-OES, thus could be adequate for the routine analysis in terms of the quality control of these drinks.
Wroclaw University of Technology, Chemistry Department, Analytical Chemistry Division, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland. Electronic address: maja.welna@pwr.wroc.pl.
Maja
M
Welna
Wroclaw University of Technology, Chemistry Department, Analytical Chemistry Division, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland.
Anna
A
Szymczycha-Madeja
D000965:Antimony / Q000032:analysis*; D001151:Arsenic / Q000032:analysis*; D001628:Beverages / Q000032:analysis*; D005638:Fruit; D006851:Hydrochloric Acid; D057230:Limit of Detection; D017942:Nitric Acid; D012643:Selenium / Q000032:analysis*; D013048:Specimen Handling
D017942:Nitric Acid; D000965:Antimony; D012643:Selenium; D001151:Arsenic; D006851:Hydrochloric Acid; C022102:aqua regia
Antimony; Arsenic; Fruit juice; Hydride generation; ICP-OES; Sample preparation; Selenium