Abstract
A flow-injection system for investigating the chemiluminescence of aromatic ketone hydrazones is developed, based on KMnO 4 oxidation with formic acid as a carrier. Rhodamine B has proved to be an efficient sensitizer. The hydrazones studied are benzophenone hydrazone, benzil dihydrazone, acetophenone hydrazone and benzoin hydrazone. The relative standard deviation for ten replicate injections of 1 × 10 −5 M benzophenone hydrazone and the detection limit (3 σ) are 2% and 3 × 10 −6 (30 pmol, 10-μl injection), respectively. The interference effect of some metal ions is also investigated. Cu(II), Cd(II), Zn(II), Ca(II), Co(II) and Ni(II) have no effect whilst Mn(II), Mo(VI) and Ce(IV) suppress the signal.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
