桑色素荧光分光光度法测定痕量锗的研究  

SPECTROFLUOMETRIC DETERMINATION OF GERMANIUM WITH MORIN

作　　者：陈雁君[1] 上官国强[1] 王宁[1] 陈亚民[1] 王洪玮[2] 

机构地区：[1]济宁医学院化学教研室 [2]北京医科大学公共卫生学院

出　　处：《济宁医学院学报》1992年第2期26-28,共3页Journal of Jining Medical University

摘　　要：用桑色素荧光分光光度法测定痕量锗,锗与桑色素在磷酸介质中形成1:1络合物,此络合物在乙醇溶液中具有较强的荧光强度,λEX 为425nm,λEM 为499nm。检出限0.2ng/ml.线性范围为1.0～25ng/ml,高、中、低三种浓度的变异系数为0.85%、2.5%、3.1%,平均回收率为96.8%～104.8%,方法简便,准确度高、精密度好、共存离子干扰少。A highly sensitive and fairly selective spectrofluorometric methodwas developed for the determination of germanium with morin The detectionlimit of germanium was found to be 0.2μg/L.The linear range was 1.0—25μg/L.The average recovery of germanium was in the range of 96.8—104.8%.The relativestandard deviations were 0.85%.2.5%3.1% foo s.ix replicate determinations ofhigh,medium and low concentrations of germanium This method was simple,accurate and precise.The interference of diverse ions was at on low levels.

关 键 词：锗 分光光度法 饮料 

分 类 号：R155.59[医药卫生—营养与食品卫生学]