薏米中微量有机锗测定的研究  

A Study on Determination of Micro Organic Germanium in the Coix Lacrym a - jobi

作　　者：黄河宁[1] 林小虹[1] 苏志忠[1] 赖文忠[1] 周文富[1] 

机构地区：[1]福建三明学院化生工程系，福建三明365004

出　　处：《绍兴文理学院学报（自然科学版）》2005年第7期58-61,共4页Journal of Shaoxing College of Arts and Sciences

基　　金：三明市科技项目(2004-L-1)福建省教育厅科研项目(JBO3238)

摘　　要：依据二甲氧基羟基苯芴酮与锗的显色原理，用分光光度法对薏米中微量锗进行测定，研究了于HAC-NaAC的缓冲体系，在溴化十六烷基三甲铵(CTMAB)存在下，二甲氧基羟基苯芴酮与Ge(Ⅳ)形成红色络合物，其络合物的最大吸收波长为529珊，Ge(Ⅳ)在0～1．0ug／mL范围内符合比尔定律．拟定方法具有较好的选择性，多数金属离子不干扰检测，用于薏米中微量有机锗的测定，该方法简单可靠，并获得满意的分析结果。Micro organic Germanium in Coix Lacrym a - jobi is determined by spectrophotometry according to the color reaction between dimethoxyhydroxy phenylfluorone(DMOHPF) and.Germanium. DMOHPF reacts with Ge(Ⅳ) in the presence of Hexadecyltrim ethylammonium bromide (CTMAB) to form an red complex in HAC - NaAC buffer solution . The wave length of maximum absorption of complex is 529nm. Beer s law is obeyed within the range of 0 to 1. 0μg/mL of Ge(Ⅳ) of solution. The method of determining micro organic Germanium in coix lacrym a - jobi is simple, efficient and of good selectivity, and its analied result is satisfactory. The determination can never be disturbed by most of other metallic ions.

关 键 词：有机锗 测定 薏米 溴化十六烷基三甲铵 最大吸收波长 二甲氧基 分光光度法 显色原理 缓冲体系 比尔定律 干扰检测 金属离子 分析结果 苯芴酮 络合物 微量锗 羟基 Ge 

分 类 号：O627.42[理学—有机化学] TS275.5[理学—化学]