微波样品消解-氢化物发生-双通道原子荧光光谱法同时测定家禽内脏中硒和锗  

Simultaneous Determination of Selenium and Germanium in Poultry Offal with Microwave Assisted Sample Digestion by Double Channel HG-AFS

作　　者：郎春燕[1] 李晶[1] 宋龙跃 吴晓蓉[1] 

机构地区：[1]成都理工大学材料与化学化工学院,成都610059

出　　处：《理化检验（化学分册）》2014年第1期58-62,共5页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：应用氢化物发生-原子荧光光谱法同时测定家禽内脏中的硒和锗含量.采用微波消解法用硝酸和过氧化氢对样品进行消解,以硫脲作为预还原剂,以溶于5g·L-1氢氧化钾溶液中的20 g·L-1硼氢化钾溶液作为还原剂.硒、锗的质量浓度均在500 μg·L-1范围内与其荧光强度呈线性关系,检出限(3s/k)分别为0.001 08 μg·L-1和0.017 1μg·L-1.硒、锗的加标回收率分别在98.9％～102％,97.4％～102％之间.HG-AFS was applied to the simultaneous determination of selenium and germanium in poultry offal.The sample was digested with HNOa and H2O2 in a microwave digestor.Thiourea was added to the sample solution as pre-reductant and 20 g · L-1 KBH4 solution (dissolved in 5 g · L-1 KOH solution) was added as reductant.Linear relationships between values of fluorescence intensity and mass concentration of selenium and germanium were found in the same range within 500 μg · L-1,with detection limits (3s/k) of 0.001 08 μg · L-1 and 0.017 1 μg · L-1,respectively.Values of recovery found by standard addition method were in the range of 98.9％-102％ for selenium and 97.4％-102％ for germanium.

关 键 词：微波消解 氢化物发生-原子荧光光谱法 硒 锗 家禽内脏 

分 类 号：O652.4[理学—分析化学] X832[理学—化学]