【摘要】 在酸性介质中，非离子表面活性剂聚乙烯醇存在下，用罗丹明B－锗钼蓝离子缔合物水相分光光度法测定食品、中药中的微量锗。缔合物最大吸收波长为580nm，摩尔吸收系数为1．02×105mol·L－1·cm－1，0～0．40mg·L－1锗满足比尔定律。方法精密度为5．9％，回收率为95％～105％。更多还原

【Abstract】 Germanium was extracted into CCl4 from food and traditional Chinese medicine in a medium of 9~10 mol.L-1 HCl, then extracted back into water. The complex can be stabilized for 24 h. The content of Ge was determined by spectrophotometry at 580 nm. The molar absorptivity is 1.02×105 mol. L-1 .cm-1 and the Beer’s law is obeyed in the range of 0 ~ 0.40 mg.L-1 of Ge. Its relative standard deviation is 5.9%, recovery is 95% ~ 105 %. This method has been used to determine Ge in some kinds of food, traditional Chinese medicine and ores.更多还原