7.1 Suitable Methods

There are a number of published methods for quantifying elemental concentrations from ED-XRF data, and the area is of continued research interest. Most methods fall into the category of bivariate linear models of the relationship between ED-XRF peak area, and independently derived element concentrations (e.g. sub-samples analysed by ICP-MS). However, there are also more complex approaches, like Lee Drake’s modern version of the Lucas-Tooth and Price (1961) algorithm, “CloudCal”.