GB/T 34100-2017Test method for determination of total sulfur in light hydrocarbons, spark ignition engine fuel,diesel engine fuel, and engine oil - Ultraviolet fluorescence method (English PDF)

1 Scope

This standard specifies the method of determination of total sulfur content of light hydrocarbons and engine fuels and other oils by UV fluorescence spectrometry.

This standard applies to the determination of the boiling range between 25 °C ~ 400 °C, the kinematic viscosity at room temperature 0.2mm2/s ~ 20mm2/s

Total liquid sulfur in liquid hydrocarbons, including naphtha, distillate, engine oil, ethanol, fatty acid methyl esters (FAME), and motor fuels such as steam

Oil, Oxygenated Gasoline (Ethanol Blends, E-85, M-85), Diesel, Biodiesel, Biodiesel Blending and Jet Fuel. Total sulfur content measurement

The range of 1.0mg/kg ~ 8000mg/kg.

This standard applies to the determination of halogen content of not more than 100mg/kg total sulfur content of liquid hydrocarbons.

Note. If the sulfur content is low and the nitrogen content is high, the nitrogen content has an influence on the sulfur content determination result.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 1884 crude oil and liquid petroleum products density laboratory determination (density meter method)

GB/T 1885 petroleum meter

GB/T 4756 Petroleum liquids - Manual sampling method

Petroleum liquid pipeline automatic sampling method

GB/T 29617 digital density meter Determination of liquid density, relative density and API gravity test method

SH/T 0604 Crude petroleum and petroleum products - Determination of density (U-tube method)

3 Method summary

The syringe can be used to inject the sample directly into the high temperature combustion tube; it is also possible to inject the sample into the sample boat and push the boat to high temperature

Burning tube. Under high temperature, oxygen-rich conditions, sulfur in the sample is oxidized to form sulfur dioxide (SO2). The gas generated after the combustion of the sample passes first

Removal of water from the device in the gas water, and then by ultraviolet (UV) light irradiation, sulfur dioxide (SO2) to absorb the energy of ultraviolet light into excited state

Of sulfur dioxide (SO2 *). Sulfur dioxide (SO2) from the excited state returned to the ground state when the fluorescence emitted by the photomultiplier tube detection by

The resulting signal value calculates the sulfur content of the sample.

Warning --- Exposed to excessive amounts of UV light harmful to health. Operators should avoid exposure of any part of the body to UV light and secondary or

Scattered by the radiation of light, especially the eyes.