CAJ | 학술논문

研究了在L-半胱氨酸存在下，锗与硼氢化钠反应产生锗化氢挥发分离，再用显色剂2-(5-NO2-2-吡啶偶氮)-5-二乙氨基酚(5-NO2-PADAP)，次氯酸钠，六次甲基四胺的混合液吸收显色，有色溶液在564nm处有最大吸收；摩尔吸光系数为1.84×105L·mol/-1·cm-1，锗在0～500μg/L范围内服从比尔定律；样品标准加入回收率为89％～97％；相对标准偏差小于6.3％；用本法对中药材中微量锗的测定，结果令人满意。
연구료재L-반광안산존재하，타여붕경화납반응산생타화경휘발분리，재용현색제2-(5-NO2-2-필정우담)-5-이을안기분(5-NO2-PADAP)，차록산납，륙차갑기사알적혼합액흡수현색，유색용액재564nm처유최대흡수；마이흡광계수위1.84×105L·mol/-1·cm-1，타재0～500μg/L범위내복종비이정률；양품표준가입회수솔위89％～97％；상대표준편차소우6.3％；용본법대중약재중미량타적측정，결과령인만의。
The hydride generation technique was used to determination of germanium in the presence of L-cysteine.The GeH4 was absorbed and coloured by a mixed solution of 2-(5-NO2-2-pyridylazo)-5-diethylaminophenyl(5-NO2-PADAP),NaClO and (CH2)6NH+.The maximum absorption of the colour complex was at 564nm.Its apparent molar absorption coefficient was 1.84×105L·mol-1·cm-1.Beer＇s law was obeyed for 0～500μg/L germanium.The recoveries of spiked samples were in the range of 89%～97%,while the relative standard deviation was less than 6.3%.This method is sensitive,simple and reproducible.The method has been applied to the determination of Ge in the chinese medicine with satisfactory result.