ABSTRACT
ABSTRACT: A new application of high resolution continuum source graphite furnace atomic absorption spectrometry has been developed for the determination of Cd, Pb and Cu in chia seeds. The samples were digested by microwave. Under the selected determination conditions, the correlation coefficients better than 0.998 and the recoveries between 95.8% and 102.5% were obtained for Cd, Pb and Cu. The detection limits were 0.11 μg/L (Cd), 1.09 μg/L (Pb) and 0.88 μg/L (Cu), respectively. The results showed that the contents in chia seeds were 1.74 ± 0.06 μg/kg (Cd), 6.57 ± 0.29 μg/kg (Pb) and 19425 ± 325 μg/kg (Cu), respectively. Therefore, the proposed method was accurate and stable with a high practical value. It provided scientific basis for determination of metal elements in food.
