ONLINE SOLVENT EVAPORATOR FOR COUPLED LC SYSTEMS - FURTHER DEVELOPMENTS

An on-line solvent (eluent) evaporator is used for reconcentrating a f raction from a first LC column before introduction into a second LC se paration step, possibly involving another mobile phase. For pentane an d pentane containing 10% of dichloromethane, evaporation rates of 1 ml /min were achieved, On evaporating a volume of 6 ml, 2-ethylnaphthalen e was retained to more than 75%, Separation of aliphatic and polyaroma tic hydrocarbons in a linseed oil is shown as an application.