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Determination of Dinoseb by adsorptive stripping voltammetry
Author(s) -
Pedrero María,
de Villena F. Javier Manuel,
Pingarrón José M.,
Polo Luis M.
Publication year - 1991
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140030429
Subject(s) - adsorptive stripping voltammetry , hanging mercury drop electrode , chemistry , cyclic voltammetry , adsorption , voltammetry , electrode , stripping (fiber) , analytical chemistry (journal) , dropping mercury electrode , relative standard deviation , differential pulse voltammetry , electrochemistry , chromatography , detection limit , organic chemistry , materials science , composite material
A sensitive method is described for the determination of Dinoseb (2‐ sec ‐butyl‐4, 6‐dinitrophenol) at nanomolar levels by adsorptive stripping voltammetry (AdSV) at the hanging mercury drop electrode. Cyclic voltammetry studies showed two well‐defined reduction peaks, at −0.21 and −0.36 V, and demonstrated the adsorption of Dinoseb and its intermediate reduction product on the electrode. A systematic study of the experimental parameters that affect the stripping response was carried out using differential pulse voltammetry. Using a 120 second adsorption time, the limits of determination and detection were 1.5 × 10 −9 and 4.6 × 10 −10 M, respectively, and the relative standard deviation ( n = 10) was 3.9% at a concentration level of 6.0 × 10 −9 M.