title: Polargraphic adsorptive waves of alkaline-earth metal complexes with thymolphthalexone.
abstract: Sensitive derivative polarographic adsorption waves have been observed for alkaline-earth metal-TP complexes in 0.15M potassium hydroxide containing 3 x 10(-5)M thymolphthalexone (TP). The limit of detection for calcium, strontium and barium was 7.5 x 10(-7)M and for magnesium 4.0 x 10(-6)M. The proposed method has been used successfully for determining trace amounts of calcium in natural waters and hair samples. The composition of the complex has been shown to be 1:1 alkaline-earth metal:TP and various experiments have confirmed that the wave is an adsorption wave. The reaction mechanism has been studied by a number of methods.
authors.affiliation: Department of Chemistry, Fuzhou University, Fuzhou, Fujian, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Qing
authors.forename: H
authors.initials: H
authors.lastname: Yuying