原子吸收分光光度法测定植物中微量元素的研究(英文)

The aim of the study is to investigate the contents of trace element Se,Cd,Pb in three plants including burdock,ginkgol and garlic via graphite furnace atomic absorption and standard addition method. The results show that Se in burdock stem,skin and leaf are 32.40,48.63,38.10 μg/g,respectively; Cd in burdock stem,skin and leaf are 0.160 0,0.300 0,0.140 0 μg/g,respectively; Cd in burdock stem,skin and leaf are 2.020,3.960,2.410 μg/g,respectively. In the ginkgo and ginko leaf,Se contents are 17.63 and 16.91 μg/g,respectively; for Cd are 0.181 0 and 0.202 0 μg/g,respectively; for Pb are 3.572 and 4.021 μg/g,respectively. In garlic,Se,Cd and Pb are 73.900 0,6.900 0 and 0.390 0,respectively. All the standard deviations of measured results are below 2.3%,recovery rate are from 99% to 101%.