Abstract:
The two methods for the determination of cadmium in rice were compared and analyzed. The content of cadmium in rice was detected by microwave digestion-graphite furnace atomic absorption spectrometry (GFAAS) and microwave digestion-inductively coupled plasma mass spectrometer (ICP-MS), and the test samples were verified by adding the standard samples and the quality control samples. The test results showed that the two methods showed a linear relationship in the mass concentration stipulated in the standard (
r>0.999), and the recovery rate was within the range of 88%-105%. The test results of the quality control samples met the certificate requirements. The results of the two different analytical methods were in line with the national standards, but the detection limit, accuracy and stability of the ICP-MS method were better than that of the GFAAS method.