溶剂浮选光度法间接测定烟草中尼古丁  

SOLVENT FLOATATION-INDIRECT PHOTOMETRIC DETERMINATION OF NICOTINE IN TOBACCO

作　　者：阎永胜[1] 李春香[2] 赵干卿[2] 王彦玲[3] 

机构地区：[1]华中科技大学环境科学与工程学院武汉430074 [2]河南平顶山师范高等专科学校化学系 [3]平江山市烟草学会

出　　处：《理化检验（化学分册）》2001年第2期78-79,81,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：河南省自然科学基金

摘　　要：利用在碱性条件下 Cu( )与烟碱 (C10 H14 N2 )生成浅蓝色沉淀 ,通过浮选光度法直接测定 Cu( ) ,进而间接测定烟草中的烟碱含量。此法准确度高 ,回收率为 98%～ 1 0 0 % ,精密度好 ,RSD为 0 .1 2 %～ 1 .30 %。It is reported that in a buffer solution of pH 9, nicotine is reacted with Cu(Ⅱ) ion forming a light blue precipitate which can be concentrated by solvent floatation into CCl 4 The copper content in the CCl 4 solution is then determined photometrically with DDTC as color reagent, and nicotine is determined indirectly Recoveries obtained are in the range of 98%~100% and the RSDs′ found are in the range of 0 12%~1 3% The proposed method has been applied to the analysis of tobacco

关 键 词：烟草 浮选光度法 尼古丁 测定 

分 类 号：TS411[农业科学—烟草工业]