Determination of cadmium, chromium and lead in Lycoris radiata with microwave digestion technique by graphite furnace atomic absorption spectrometry

作者：Fan, HJ; Li, GK^*; Luan, W; Cai, PX

来源：Spectroscopy and Spectral Analysis, 2005, 25(9): 1503-1506.

• microwave digestion technique
• GFAAS
• Lycoris radiata
• cadmium
• chromium
• lead

A new method using microwave digestion technique was developed for the determination of cadmium, chromium and lead in Lycoris radiata by graphite furnace atomic absorption spectrometry (GFAAS). Digestion solvents were discussed for sample preparation by microwave digestion technique. The optimum condition of determination by GFAAS was studied in the presence of NH(4)H(2)PO(4) matrix modifier. The detection limits of Cd, Cr and Pb are 0.066 7, 1.22 and 0.810 mu g center dot L(-1), respectively. The method was applied to the determination of Cd, Cr and Pb in Lycoris radiata samples with satisfactory results. The RSD of determination were lower than 3.1%. The recoveries were from 83.8% to 118%.

• 出版日期2005-9
• 单位广东药科大学; 中山大学