Flow-injection procedures for the indirect determination of L-g1utamic acid and glutamate dehydrogenase, based on a coupled reaction ith immgbilized bacterial luciferase and oxidoreductase, are described. The linear ranges are 1 x 10 - 1 x 10- M for L-g1utamic acid and 0.015 - 0.3 pmol for glutamate dehydro~nase. The reproducibility is less than 5.8% (n =5) for both assays and the sample throughout is 60 h-1.


A NABI ,P J WORSFOLD ,