| Autor: |
Ristow, N E, Sotemann, S W, Wentzel, M C, Loewenthal, R E, Ekama, G A |
| Přispěvatelé: |
Department of Civil Engineering, Faculty of Engineering and the Built Environment |
| Jazyk: |
angličtina |
| Rok vydání: |
2005 |
| Předmět: |
|
| Zdroj: |
Water SA |
| Popis: |
Sulphate measurement using a barium sulphate turbidimetric method in solutions with high concentrations of organic material is shown to be problematic. The organics give background colour, which introduces a positive error to the measured absorption, and inhibit the barium sulphate precipitate, which results in a negative error. A carbonate fusion pretreatment of the sample results in the removal of the organic matter and associated interferences. With this pretreatment, excellent sulphate recoveries were obtained (100%). Rigorous testing of the method shows that reproducible and accurate results are obtainable. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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