Abstract
The polarographic behaviour of N,N-dimethyl-4-amino-4′-sulfoazobenzene was investigated by tast polarography and differential pulse polarography at a dropping mercury electrode, constant-potential coulometry at a large area mercury electrode and cyclic voltammetry at a hanging mercury drop electrode. Optimum conditions have been found for its determination by tast polarography in the concentration range of 2-100 μmol l-1, differential pulse polarography at a dropping mercury electrode in the concentration range of 0.2-100 μmol l-1 and by differential pulse voltammetry at a hanging mercury drop electrode in the concentration range of 0.02-10 μmol l-1. The sensitivity of the determination can be further improved by adsorptive accumulation of the test substance on the hanging mercury drop electrode. Three-minute accumulation in stirred solution allows determination in the range of 0.2-100 nmol l-1.
Original language | English |
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Pages (from-to) | 597-608 |
Number of pages | 12 |
Journal | Collection of Czechoslovak Chemical Communications |
Volume | 62 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Jan 1997 |
Externally published | Yes |
Keywords
- N,N-dimethyl-4-amino-4′-sulfoazobenzene
- Polarography
- Voltammetry
ASJC Scopus subject areas
- Chemistry(all)