Description
The system conforms to the following testing methods for chlorine testing:
- ASTM D5453-2006 Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence.
- SH/T 0689-2000 Standard Test Method for determination of total sulfur in light hydrocarbons, motor fuels and oils by ultraviolet fluorescence
- EN ISO 20846:2004 Petroleum products: Determination of sulfur content of automotive fuels Ultraviolet Fluorescence
- GB 17930-2013 Determination of sulfur content in Gasoline for motor vehicles
- GB 19147-2016 Determination of sulfur content in Automobile diesel fuels
- ISO 20846:2011 Petroleum Products – Determination of sulfur content of automotive fuels Ultraviolet Fluorescence
- BS EN 15486-2007 Ethanol as a blending component for petrol. Determination of sulfur content, Ultraviolet Fluorescence method
Measuring Principle
When a sample containing Sulfur is combusted in the quartz catalytic chamber at 1000oC, sulfur dioxide (SO2) is formed.
R-S + O2 –> SO2 + H2O + CO2
The technique involves, the following sequence. Firstly, sulfur dioxide (SO2) is formed during oxidation, the gaseous formed is then transferred to the reaction chamber. Here it is excited by a pulsed UV source. As the excited is unstable, the excited SO2 will instantly decay to its ground state energy level. During this process, UV light is emitted. As this light has a different wavelength than the original UV source, the Photomultiplier tube (PMT) is able to detect this emission.
The amount of light emitted represent the total amount of SO2 present in the combusted sample flow. Then in turn can be taken as the corresponding amount of Total Sulfur in the sample.
The equations for this reaction are:
SO2 + hv1 –> SO2*
SO2* –> SO2 + hv2
Features & Characteristics
- Imported Fluorescence Excitation Source
- High sensitivity and accuracy membrane dryer and filters
- Fast and stable metal encapsulated PMT
- Advanced temperature control system with two position heating to ensure rapid and stable heating rate
- Wide application scope with good adaptation capability, allowing liquid, solid and gases analysis using selective sample delivery module
- Intuitive and user-friendly operation software. Ease of operation through a few mouse click to perform straight forward parameter setting, data collection and data processing
- Requires only a small amount of sample, features short run time allows high sample throughput
