FULLY ROBOTIC METHOD FOR THE DETERMINATION OF DIENE VALUE IN SEVERAL TYPES OF FUELS

A fully automated method for the determination of the diene value in s everal types of fuels based on the use of a robotic station involving potentiometric and photometric titrators is reported. The principle of the method is the standard procedure involving hydrolysis of the non- reacted maleic anhydride, extraction of maleic acid from the organic p hase and subsequent determination. The assembly works in an unattended fashion thus eliminating the problems inherent to the determination o f this routine parameter in the laboratory. The automated method affor ds a precision, expressed as average of-relative standard deviation, o f 1.82%. The good agreement between the results obtained by the propos ed and those from conventional methods for the target parameter confir ms its excellent performance and usefulness.