Separation of resin acids from fatty acids in relation to environmental studies.
Kraft mills pulping coniferous wood species discharge to their receiving waters effluents containing mixed resin and fatty acids. To study the fish-toxic properties of these fractions it is desirable to be able to separate them without causing double bond isomerizations in the acid-labile resin acid fraction. A method is described using toluenesulphonic acid as catalyst under very mild conditions and four examples of its application are given. It was not possible to separate tall oil samples without a low degree of resin acid isomerization.
D000818:Animals; D002849:Chromatography, Gas; D004952:Esters / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis*; D005399:Fishes / Q000378:metabolism; D008722:Methods; D010938:Plant Oils; D012116:Resins, Plant / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000032:analysis*
D004952:Esters; D005227:Fatty Acids; D010938:Plant Oils; D012116:Resins, Plant; C482568:tall oil