TXRF Technique in Trace Level Analysis of Environmental Samples

Article type: Research Article

Authors: Olise, F.S. | Owoade, O.K. | Olaniyi, H.B.

Affiliations: Environmental Research Laboratory Department of Physics, Obafemi Awolowo University, Ile-Ife, Nigeria

Note: [] Corresponding author. E-mail: [email protected]

Abstract: Total Reflection X-Ray Fluorescence (TXRF) technique capability in the multi-elemental analysis of samples of diverse matrices is reported. This technique has been used in the simultaneous assay of geological, environmental and biological samples. The TXRF technique having an advantage over the conventional Energy Dispersive X-Ray Fluorescence (EDXRF) technique in detecting elements at trace concentrations, 10 ppb, is demonstrated. The IAEA Soil 7 reference standard was analysed to attest to the accuracy and precision of the technique. The measured results and the reference or certified values of the reference standard were in good agreement. For most analysed elements, the precision in this work was better than 1.20%.

Keywords: TXRF, multi-elemental, diverse matrices, accuracy, precision

Journal: Asian Journal of Water, Environment and Pollution, vol. 3, no. 2, pp. 51-55, 2006