ISO 16591:2010 specifies a method for the determination of the sulfur content by oxidative microcoulometry of petroleum light and middle distillates with a final boiling point not higher than 400 °C. It is applicable to materials with sulfur contents in the range of 1 mg/kg to 100 mg/kg.
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Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents and materials
4.1 Electrolyte
4.6 Sulfur stock solution
4.7 Sulfur standard solutions
5 Apparatus
5.1 Microcoulometric apparatus
6 Samples and sampling
7 Apparatus preparation
7.1 Titration cell
7.2 Microcoulometer and recorder
7.3 Heating tape
7.4 Typical operating conditions
8 Apparatus verification and calibration curve construction
9 Procedure
10 Calculation
11 Expression of results
12 Precision
12.1 General
12.2 Repeatability, r
12.3 Reproducibility, R
13 Test report
Annex A Determination of sulfur contents below 1 mg/kg - Standby technique (informative)
Annex B Troubleshooting (informative)
Annex C Calculation of sulfur content from electrochemical data (informative)
ISO 12185:1996 Crude petroleum and petroleum products -- Determination of density -- Oscillating U-tube method
ISO 3170:2004 Petroleum liquids -- Manual sampling
ISO 3171:1988 Petroleum liquids -- Automatic pipeline sampling
ISO 12185:1996 Crude petroleum and petroleum products -- Determination of density -- Oscillating U-tube method
ISO 3170:2004 Petroleum liquids -- Manual sampling
ISO 3171:1988 Petroleum liquids -- Automatic pipeline sampling
ISO 3675:1998 Crude petroleum and liquid petroleum products -- Laboratory determination of density -- Hydrometer method
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods