Slurry atomization for the determination of arsenic in baby foods using electrothermal atomic absorption spectrometry and deuterium background correction

摘要: A procedure for accurately determining arsenic in different types of baby foods using slurried samples is developed. Compensation the background carried out a deuterium device. Suspensions prepared medium containing 0.1% m/v Triton X-100, 20% v/v concentrated hydrogen peroxide, 1% nitric acid and 0.3% nickel nitrate are directly introduced into furnace. The calcination atomization temperatures 1400 2400°C, respectively. Calibration by standard additions method. characteristic mass 23 pg detection limit 22 ng g –1 . reliability checked comparing results obtained with others based on microwave-oven sample digestion analyzing three certified reference materials. Values content ranged between 0.04 2.6 µg