| 摘要 |
<p>The invention relates to a method of and a system for quantitative determination of sodium in petroleum fuel, such as heave fuel oil. The method comprises determining a concentration of sodium in the petroleum fuel using NMR. The method advantageously comprises determining sodium in the form of sodium isotope 23Na by performing at least one NMR measurement on at least a part of the petroleum fuel, obtaining at least one NMR spectrum from the NMR measurement(s) and performing the quantitative determination of sodium based on the NMR spectrum, where the result is compared to calibration data comprising NMR—determinations on petroleum fuels with known sodium concentration.</p> |
