Pb, Zn, Ni, Fe, Mn, V determination in petroleum and petroleum products
The test method is applied to the following products:
- Crude oil;
- Oil directed for dehydration, desalting and stabilization;
- Oil, dehydrated and desalted in the oil and gas refineries;
- Oil, stabilized in the oil and gas refineries;
- Oil supply by type;
- Light petroleum products, alternative fuel;
- Black (dark) oil;
- Lubrication oils;
- Other petroleum products.
The test method is based on x-ray fluorescence radiation intensity measurement on the wavelengths corresponding to the determined elements and calculation of the elements concentration with the preliminary prepared calibration curve.
Viscous products shall be liquefied either by heating or by dilution with mineral oil.
The test material is filled in the sample cups and put in spectrometer. Analysis is carried out automatically according to the program, lead content calculation is run with preliminary obtained calibration curve. If the sample was diluted then the result is multiplied by the corresponding coefficient.
The test method provides determination of a single element or multiple elements content at a time dependent on the analysis purpose.
|Element||Concentration range, mg/kg|
|Pb||from 3 up to 500|
|Zn||from 3 up to 500|
|Ni||from 3 up to 500|
|Fe||from 3 up to 500|
|Mn||from 3 up to 500|
|V||from 3 up to 500|