フェニルフルオロンと塩化ベンザルコニウムを用いるゲルマニウムの吸光光度定量

概要

論文の詳細を見る
The sensitizing effect of 16 quaternary ammonium salts on the spectrophotometric determination of germanium with phenylfluorone was compared. Benzalconium chloride gave the greatest increase in sensitivity: under the optimum conditions the sensitivity was about twice as high as that in the absence of this salt, the molar extinction coefficient of the complex formed being 1.81 × 10^5 dm^3 mol^<-1> cm^<-1> at 508 nm. The calibration curve was linear up to 0.16 ppm of germanium. Metal ions such as As^<3+>, As^<5+>, Pb^<2+>, Hg^<2+>, Cu^<2+>, A1^<3+> Fe^<2+>, Fe^<3+>, Cd^<2+>, and Zn^<2+> did not interfere with the determination, while Sb^<3+>, Sn^<2+>, Sn^<4+>, and Mo^<6+> gave positive errors.
1980-08-05