3.5. Determination of cadmium in rice and water samples
Due to the biological and environmental significance of cad-mium[1], several samples of rice and water were analyzed to check the applicability of the proposed SDME-based method. The rice samples after digestion were subjected to SDME preconcentration and the subsequent instrumental measurements, and the analytical results obtained using simple aqueous standard calibration were given inTable 3. The real water samples including Erhai Lake, Xier River were analyzed to validate the application of the proposed method. The recoveries for the spiked samples were in the acceptable rangeof 97.8–106%. Tovalidate the accuracy of the determination of real water samples, ICP-MS was used for the comparison with the spectrophotometricde termination, which showed good consistency