Showing papers by "Forest Research Institute published in 1968"
TL;DR: In this paper, a chromatographic method for the study of quinidine metabolism was described, in which the fluorescing bands were divided into four main fractions and extracted with ethanol-acetone (1:1) from the adsorbent layer of the plate.
31 citations
27 citations
11 citations
TL;DR: A pink-colored, predominantly calcium saturated, clay mineral from Tirebolu, NE-Turkey, is shown to be a dioctahedral, high-charge manganiferous smectite.
Abstract: A pink-colored (HUE 5R-7/4), predominantly calcium saturated, clay mineral from Tirebolu, NE-Turkey, is shown to be a dioctahedral, high-charge manganiferous smectite. It is probably an alteration product of volcanic tuffs of rhyodactitic composition. Ionic formula: (Si7.71Al0.29)IV(Al3.04Fe0.123+Fe0.022+Mg0.92Mn0.072+)VI O20 (OH)4 0.79 M+ Cation exchange capacity: 92 me/100 g (air dry sample). Unit cell parameters (ca. 20 ° C; ca. 40% RH): a0∼9.02 A b0∼5.21 A Mg++... Mn-smectite: c0∼14.65 A Ca++... Mn-smectite: c0∼14.83 A K+... Mn-smectite: c0∼12.10 A