[Studies on the voltammetric behaviour of barbaloin and its application].

In 0.1 mol.L-1 H2SO4 solution, a well-defined reduction wave of barbaloin was obtained by single-sweep osciflopolarography. The peak potential was shown to be -0.75 V (vs SCE). The peak current is proportional to the concentration of barbaloin over the range of 2.0 x 10(-7)-6.0 x 10(-6) mol.L-1. The detection limit is 2.0 x 10(-7) mol.L-1. The voltammetric behaviour of the system was studied by linear sweep and cyclic voltammetry. The adsorption coefficient beta was 1.91 x 10(5). The interaction factor alpha was 1.12. The system is a reversible adsorption wave.