Apparatus for measuring free and total sulfurous acid and method of measurement
US5385830A · kind A · utility
1Cited by
0References
15Claims
0Family size
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Key dates
| Filing date | Oct 4, 1991 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Oct 4, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/188
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present invention provides a method for measuring the amount of free sulfurous acid and bound sulfurous acid in a sample using a bacterium belonging to Thiobacillus thiooxidans or Thiobacillus ferrooxidans of in which the sample is treated with acid and/or alkali to give free sulfurous acid alone in the sample. Then, the total amount of free sulfurous acid in the sample is measured by an oxidation reaction of free sulfurous acid to sulfuric acid using a bacterium belonging to Thiobacillus thiooxidans or Thiobacillus ferrooxidans.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.