顺序注射氢化物发生-原子荧光光谱法同时测定灵芝中As和Bi

目的]建立1种顺序注射氢化物发生-原子荧光光谱法同时测定灵芝试样中的As和Bi含量的方法。方法]灵芝样品采用微波快速消解系统消解，用绘制的标准曲线采用原子荧光光度计测得各个样品的As和Bi含量，并考察了光电倍增管负高压、As和Bi灯电流、原子化器高度、载气流量、屏蔽气流量等因素对测定结果的影响。结果]载流HCI的浓度为0．3mol／L，KBH。浓度为10g／L时，同时测定As和Bi的效果最佳。在最佳试验条件下，As和Bi的检出限分别为0．079和0．031μg/L，加标回收率为90．5％～104．5％，相对标准偏差小于3．4％，灵芝试样中共存的离子对As和Bi的测定没有干扰。结论]该方法操作方便、快速，灵敏性高，适用于灵芝试样品中As和Bi含量的同时测定．具有很好的可行性和实用性。

Simultaneous Determination on As and Bi in Ganoderma lucidum by Sequential Injection HydrideGeneration-Atom Fluorescence Spectrometry

Objective] The study aimed to establish a method for simultaneous determination on As and Bi in Ganoderma lucidum samples by sequential injection hydride generation-atomic fluorescence spectrometry.Method] G.lucidum samples were digested by microwave rapid digestion system and the contents of As and Bi in each sample were determined by atomic fluorescence spectrometer based on the drawn standard curve.The effects of the factors such as the negative high voltage on the photomultiplier,lamp current of As an...