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 sh...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 0.2020μg/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%.展开更多
目的:建立石墨炉原子吸收分光光度法测定空心胶囊中有害元素铬的含量。方法:采用微波消解系统消解样品,以石墨炉原子吸收分光光度法检测空心胶囊中铬元素的含量。结果:线性范围为0～10.0 μg·L^(-1),二次回归方程相关系数 r 为0.99...目的:建立石墨炉原子吸收分光光度法测定空心胶囊中有害元素铬的含量。方法:采用微波消解系统消解样品,以石墨炉原子吸收分光光度法检测空心胶囊中铬元素的含量。结果:线性范围为0～10.0 μg·L^(-1),二次回归方程相关系数 r 为0.9998,方法的检出限为0.39 μg·L^(-1),定量限为1.84 μg·L^(-1),特征浓度(灵敏度)为0.0587 μg·L^(-1),平均回收率为98.9%(n=9)。结论:采用本法检测空心胶囊中铬元素的含量,方法灵敏、准确、可靠,对控制胶囊中铬元素的含量有实际意义。展开更多
基金School Fund of Xuzhou Institute of Technology (XKY200614)~~
文摘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 0.2020μg/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%.
