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Investigations on adsorption potentiometry. Part X: Derivative adsorption chronopotentiometry of chromium( III )
Author(s) -
Jin Wenrui,
Jia Xianglan,
Lu Jianmin
Publication year - 1995
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.1140071010
Subject(s) - chromium , adsorption , chemistry , derivative (finance) , mercury (programming language) , detection limit , inorganic chemistry , hanging mercury drop electrode , electrode , drop (telecommunication) , analytical chemistry (journal) , voltammetry , electrochemistry , chromatography , organic chemistry , telecommunications , computer science , financial economics , economics , programming language
The study concerns a very sensitive electroanalytical method, based on derivative chronopotentiometry of the chromium( III ) complex with 2‐(5′‐bromo‐2′‐pyridylazo)‐5‐diethyl aminophenol (5‐Br‐PADAP) accumulated adsorptively on the surface of a hanging mercury drop electrode. The detection limit is 6 × 10 −11 mol/L for a preconcentration time of 6 min. The mechanism of the electrode reaction has been investigated in detail.