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The determination of organochlorine compounds by adsorptive stripping voltammetry, part II: 2,4‐dichlorophenoxyacetic acid and 2,4,5‐trichlorophenoxyacetic acid
Author(s) -
Li Chiang,
James Bruce D.,
Magee Robert J.
Publication year - 1990
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.1140020113
Subject(s) - 2,4 dichlorophenoxyacetic acid , adsorptive stripping voltammetry , chemistry , stripping (fiber) , chromatography , relative standard deviation , voltammetry , detection limit , analytical chemistry (journal) , nuclear chemistry , inorganic chemistry , electrochemistry , electrode , materials science , botany , composite material , biology
An indirect procedure for the determination of 2,4‐dichlorophenoxyacetic acid (2,4‐D) and 2,4,5‐trichlorophenoxyacetic acid (2,4,5‐T) in mixtures via adsorptive stripping voltammetry is reported. This method takes advantage of the formation of a new pH‐dependent peak, which is obtained when these acids interact with Fe(II). The limits of detection are 1.7 ppb for 2,4‐D and 1.5 ppb for 2,4,5‐T. The relative standard deviations (for 10 determinations) are 6.2 and 5.7%, respectively.