1986 Volume 35 Issue 4 Pages 413-415
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-3for 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 × 103 dm3 mol-1 cm-1 at 509 nm and 1.48 × 104 dm3 mol-1 cm-1354 nm, respectively.
