Sulphur and lead determination in petroleum products by raioisotope induced X‐ray fluorescence

Abstract

AbstractA simple additive method, based on 55Fe and 109Cd source induced fluorescence in a helium environment, is presented for sulphur and lead determintion in petroleum products. Although the density of the matrix influences the X‐ray yields, the similarity of photon attenuation in water and petroleum products can be explotied. It is shown that routine system calibration can be achieved by the use of inorganic chemicals dissolved in water instead of organic additives in products. The low pressure helium flow suppresses the argon X‐rays, provides a good background region and increases the detection sensitivity for sulphur.