CAJ | 학술논문

[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HCl的浓度为0.3 mol/L,KBH4浓度为10 g/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0.031 μg/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.
[목적]건립1충순서주사경화물발생-원자형광광보법동시측정령지시양중적As화Bi함량적방법.[방법]령지양품채용미파쾌속소해계통소해,용회제적표준곡선채용원자형광광도계측득각개양품적As화Bi함량,병고찰료광전배증관부고압、As화Bi등전류、원자화기고도、재기류량、병폐기류량등인소대측정결과적영향.[결과]재류HCl적농도위0.3 mol/L,KBH4농도위10 g/L시,동시측정As화Bi적효과최가.재최가시험조건하,As화Bi적검출한분별위0.079화0.031 μg/L,가표회수솔위90.5%～104.5%,상대표준편차소우3.4%,령지시양중공존적리자대As화Bi적측정몰유간우.[결론]해방법조작방편、쾌속,령민성고,괄용우령지시양품중As화Bi함량적동시측정,구유흔호적가행성화실용성.
[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 and Bi, height of atomizer, carrier gas rate and shield gas rate on the determination of As and Bi were investigated. [Result] When the concn. of hydrochloric acid and potassium borohydride were 0.3 mol/L and 10 g/L resp., the effect of simultaneous determination on As and Bi was optimum. Under the optimum testing conditions, the detection limits of As and Bi were 0.079 and 0.031 μg/L resp. The standard addition recoveries for As and Bi were 90.5%-104.5%, with the maximum RSD of 3.4%. The coexistence ions in determined G. lucidum samples didn't interfere in the determination of As and Bi. [Conclusion] This determination method was convenient and rapid in operation with higher sensitivity, so it had good feasibility and practicability for simultaneous determination on As and Bi in G. lucidum samples.