【作者】 付学腾； 盛建强； 李胜清； 徐娟； 李庆； 王海娟； 蔡黄菊； 陈浩；

【Author】 FU Xueteng Sheng Jianqiang Li Shengqing Xu Juan Li Qing Wang Haijuan Cai Huangju Chen Hao (College of Sciences, Huazhong Agricultural University Wuhan, China 430070)

【机构】 华中农业大学理学院化学系；

【摘要】 本文用火焰原子吸收光谱法,比较了四种不同消化方法对魔芋中微量金属元素含量测定的影响。结果表明,采用混酸消解的方法,各试验金属元素都得到了比较理想的测定结果。更多还原

【Abstract】 Trace elements in plants was determined by means of flame atomic absorption spectrometry (FAAS). The effect of four sample digestion procedures on the determination of chromium, cadmium, lead, copper and zinc in Amorphophallus konjac were evaluated by FAAS. The four procedures include(1)wet digestion with HNO3-HClO4;(2)wet digestion with HNO3;(3)dry ashing digestion on a hot plate;(4) dry ashing digestion with (NH4)2S2O8. The results show that wet digestion with HNO3-HClO4 is the simplest and the most effective for the determination. Spiking recoveries of Cr, Cd, Pb, Cu and Zn range from 95-99% and the RSD is 0.28%.更多还原