The George Washington University Biostatistics Center 6110 Executive Blvd Rockville MD 20852 USA
EC-European Commission, JRC-Joint Research Centre Retieseweg European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Technical Responslibe Neutron Activation Analysis B-2440 Geel Belgium
The calculation of uncertainty budgets is becoming a standard step in reporting analytical results. This gives rise to the need for simple, easily accessed tools to calculate uncertainty budgets. An example of such a tool is the Excel spreadsheet approach of Robouch et al. Here, we present an internet application which calculates uncertainty budgets for k0-NAA. The Web application has built in Literature values for standard isotopes and accepts as inputs fixed information such as the thermal to epithermal neutron flux ratio, as well as experiment specific data such as the mass of the sample. The application calculates and displays intermediate uncertainties as well as the final combined uncertainty of the element concentration in the sample. The interface only requires access to a standard browser and is thus easily accessible to researchers and laboratories. This may facilitate and standardize the calculation of k0-NAA uncertainty budgets.