Abstract
The applicability of ion selective analysis under pulp bleaching conditions was evaluated by investigating experimentally the significance of some major sources of error. Basic equations are presented. Cooling of the sample to room temperature was found to give inflated pH values. Atmospheric carbon dioxide strongly interfered with both the pH and the calcium measurements by forming carbonate buffer and complexing calcium as carbonate species. The ionic strength adjustor was probably adsorbed on lignin and fibres giving excessively high values for calcium and sodium.
| Original language | English |
|---|---|
| Pages (from-to) | 218-220+228 |
| Journal | Appita Journal |
| Volume | 56 |
| Issue number | 3 |
| Publication status | Published - May 2003 |
| Externally published | Yes |
Keywords
- Bleaching
- Calcium
- Ion selective analysis
- Pulp
- Sodium
- pH
ASJC Scopus subject areas
- Media Technology