Determination of nitrophenols by flow injection analysis with amperometric detection on boron doped diamond dilm electrode
2010
Abstract
Boron doped diamond film electrode (BDDFE) was employed in amperometric detection cell in “wall jet” arrangement for determination of 2-nitrophenol (2NP), 4-nitrophenol (4NP) and 2,4-dinitrophenol (DNP) in flow injection analysis. Under optimized conditions (run buffer 0.01 mol.L−1 sodium hydroxide; flow rate 4 mL.min−1; detection potential 1 V; injection volume 20 μL), the limits of quantitation of 2×10−6 mol.L−1 were achieved.
The repeatability of the detector response is satisfactory (relative standard deviation around 2 % for c(2NP, 4NP and DNP) = 1×10−4 mol L−1) even without any BDDFE treatment