Based on a new electrogenerated chemiluminescence (ECL) analytical idea, th
is paper explains a sensitive and selective flow-injection ECL method using
luminol for the determination of isoniazid, based on the sensitizing effec
t of isoniazid for the weak ECL emission of electrochemically oxidized lumi
nol. Under the optimum experimental conditions, the relative ECL intensity
was linear with isoniazid concentration in the range of 4.0 x 10(-8) mol/L
to 8.0 x 10(-6) mol/L and with a detecting limit of 2.8 x 10(-8) mol/L.