Detection of hydrazine, methylhydrazine and isoniazid by capillary electrophoresis with a 4-pyridyl hydroquinone self-assembled microdisk platinum electrode.

Journal Article (Journal Article)

Capillary electrophoresis (CE)/electrochemical detection (EC) for the simultaneous detection of hydrazine, methylhydrazine, and isoniazid has been developed with a 4-pyridyl hydroquinone self-assembled microdisk platinum electrode. Such an electrode has very high catalytic ability for hydrazines and they could be detected even at 0.0 V. The responses for hydrazine, methylhydrazine, and isoniazid are linear over 3 orders of detected concentration and of magnitude of 0.2-400 microM, 0.2-400 microM, 0.5 microM-2 mM, with correlation coefficients of 0.9998, 0.9991, and 0.9982, respectively. And they could be detected to levels of 0.1, 0.1 and 0.2 microM, respectively. This modified electrode was found to be very stable and reproducible when continuously used as detector for capillary electrophoresis for period of at least 4 weeks with no apparent loss of response.

Full Text

Duke Authors

Cited Authors

  • You, T; Niu, L; Gui, JY; Dong, S; Wang, E

Published Date

  • February 1999

Published In

Volume / Issue

  • 19 / 1-2

Start / End Page

  • 231 - 237

PubMed ID

  • 10698584

International Standard Serial Number (ISSN)

  • 0731-7085

Digital Object Identifier (DOI)

  • 10.1016/s0731-7085(98)00130-7


  • eng

Conference Location

  • England