Mercury - atomic Fluorescence (Type-IV)
OIV-MA-AS323-06 Determination of mercury in wine by vapour generation and atomic spectroglurimeter
Type IV method
- Field of application
This method applies to the analysis of mercury in wines with a concentration range between 0 to 10 ug/l.
Sulfur dioxide (molecular method) (Type-IV)
OIV-MA-AS323-04C Sulfur dioxide
Type IV method
Sulfur dioxide (Iodometry) (Type-IV)
OIV-MA-AS323-04B Sulfur dioxide
Type IV method
Total Sulfur dioxide (titrimetry) (Type-II)
OIV-MA-AS323-04A2 Total sulphur dioxide
Type II method
- Scope
This method is for the determination of total sulphur dioxide in wine and must.
Free Sulfur dioxide (titrimetry) (Type-IV)
OIV-MA-AS323-04A1 Free sulphur dioxide
Type IV method
- Scope
This method is for the determination of free sulphur dioxide in wine and must.
Boron (Type-IV)
OIV-MA-AS323-03 Boron (Rapid Colorimetric Method)
Type IV method
Total nitrogen (Type-IV)
OIV-MA-AS323-02B Total nitrogen
Type IV method
- Principle
The sample is wet ashed using sulfuric acid in the presence of a catalyst. The ammonia liberated by sodium hydroxide is determined titrimetrically.
Total nitrogen - Dumas method
OIV-MA-AS323-02A Quantification of total nitrogen according to the Dumas method (Musts and wines)
Type II method
- Field of application
This method can be applied to the analysis of total nitrogen in musts and wine within the range of 0 to 1000 mg/l.
Arsenic (Type-IV)
OIV-MA-AS323-01B Arsenic
Type IV method
Arsenic (AAS) (Type-IV)
OIV-MA-AS323-01A Determination of arsenic in wine by atomic absorption spectrometer
Type IV method
- Principle
After evaporating ethyl alcohol and reducing the arsenic V in arsenic III, wine arsenic is measured by hydride generation and by atomic absorption spectrometry.