More than 40 years fluorescent spectroscopy has been used to quantify the concentration of elements in different materials. X-ray analysis (XRF) is a, fast, sensitive and environmentally friendly method. Powerful and highly advanced components of XRF machine deliver new levels of sensitivity and accuracy especially for medium and heavy elements with very good accuracy and high reproducibility. This technique can offer an alternative approach for the acquisition of the data for major and trace elements with high quality results. Big potential for direct analysis of rock samples either core or cuttings, removes the requirement for wet laboratory preparation. Since powders are not affected by particle size limitations the quickest and simplest method of sample preparation is to press the powders directly into pellets of equal density and homogeneity, with or without the use of a binder. A key issue of use the XRF technique is the quantity of sample required to make a pellet which varying between 3-5 grams, ideally that will be 4.0 grams.
This simplified methodology which involves little more that grinding and pressing the samples into form of pellets, combined with robust, highly accurate bench-top XRF instrumentation means that the technology can be applied in a local laboratory as well as at well-site.In-house developed analytical methodology allows for detection up to 44 elements of the periodic table, which can be measured qualitatively or semi-quantitatively. As the quality of sample preparation for XRF analysis is at least as important as the quality of measurements we have applied internal standard analysis for instrument drift control though the run covering whole period of use the machine. Using data and batch correction tools we can provide a high quality and accurate data which can be comparative to the most popular best analytical technique like ICP.