ドデシルキサントゲン酸ナトリウムを用いるニッケル(II)及びコバルト(II)の吸光光度定量

概要

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Sodium salts of octyl- (OCX), decyl- (DEX), dodecyl- (DOX) and hexadecyl-xanthate (HDX) were newly synthesized from higher alcohols, metallic sodium and carbon disulfide in hexane. Both DOX and DEX form the micelles above the critical micellar concentrations. The colored complexes of some metal ions with these reagents were soluble in aqueous solutions. Nickel (II) and cobalt (II) were spectrophotometrically determined as metal-DOX complexes. In the presence of 5.0×10^<-4> mol dm^<-3> DOX at pH 7.0, Beer's low holds between concentrations 2.3×10^<-6> and 9.7×10^<-5> mol dm^<-3> for nickel (II), or 2.5×10^<-6> and 1.0×10^<-4> mol dm^<-3> for cobalt (II). The apparent molar absorptivities for nickel (II) and cobalt (II) complexes were 4.39×10^3 dm^3 mol^<-1> cm^<-1> at 509 nm and 1.48×10^4 dm^3 mol^<-1> cm^<-1> at 354 nm, respectively.
社団法人日本分析化学会の論文
1986-04-05