ISOTACHOPHORETIC DETERMINATION OF ETHANOLAMINES IN METALWORKING FLUIDS AND IN AIR SAMPLES FROM WORKROOMS

An isotachophoretic method is described for analysis of ethanolamines in metalworking fluids and in air samples collected in workrooms. The method is low-cost and easily operated and a fluid sample can be analy zed directly without any pretreatment. Analysis time was less than 8 m in. Various types of metalworking fluids were analyzed and different c ontents of ethanolamine, diethanolamine and triethanolamine were shown . A concentration gradient of ethanolamine in the air outside a fume h ood was demonstrated. (C) 1997 Elsevier Science B.V.