Kinetic-spectrofluorimetric determination of nitrite and nitrate at the nanograms per millilitre level by manual and flow-injection methods
✍ Scribed by Tomas Pérez-Ruiz; Carmen Martinez-Lozano; Virginia Tomás
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 659 KB
- Volume
- 265
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
✦ Synopsis
The catalytic effect of mtnte on the oxldatlon of phenosafranme by bromate m acldlc medmm was studled by usmg the decrease m fluorescence mtenslty of phenosafranme This kmetlc-spectmfluonmetrlc method for mtnte IS linear over the range 0 9-13 8 ng ml-' with a relatwe standard devlatlon of about 15% The method can be successfully adapted to flow-mjectlon analysis m the stopped-flow mode Manual and flow-mJectlon methods were satlsfactordy apphed to the determmatlon of mtrlte III waters and meat products The mcluslon of a copperlzed cadmmm column in the flow system allowed the determmatlon of mtrate and the sequential determmatlon of nitrate and nitrite m mixtures