【摘要】 采用微波消解-氢化物发生-原子荧光光谱(HG-AFS)法,对食品中痕量硒进行了分析。利用阳离子交换法消除了阳离子的干扰。对影响其荧光测量的各种因素进行了较为详细的研究,确定了实验的最佳测定条件。结果表明,硒的检出限为0.15ng/mL,回收率为93.7%～100.9%,相对标准偏差(RSD)小于2.8%。该法准确、快速、简便,应用于食品中硒的测定,结果满意。更多还原

【Abstract】 It is reported in this paper that the microwave digestion techniaue is used in the ion-exchange-separation hydride generation atomic fluorescence spectrometry determination of trace selenium in foods. The various factors affecting fluorescence intensity of selenium were examined in details.The optimum conditions for the determination is tested and discussed.The detection limit is 0.15 ng/mL.The recoveries of the method are 93.7 %～100.9 %,RSD< 2.8 %.This method is accurate,quick-acquired and convenient.It is used in the determination of trace selenium in foods with the result is satisfactory.更多还原