MULTI-ELEMENT ANALYSIS

Introduction

Semiquant is a multi-element X-ray fluorescence scanning procedure for the rapid determination of up to 72 elements at concentrations from 0.001% to 100%. The procedure is particularly suitable for materials of unknown origin or composition.

Applications

Semiquant analysis wide ranging applications including the monitoring of industrial waste, impurities in raw materials, contaminated soils studies, forensic work etc.

X-ray diffraction plus Semiquant

The search-match capabilities of x-ray diffraction in the identification and quantification of inorganic phases are greatly enhanced using concentration data collected by Semiquant.

To view an example of a typical Semiquant multi-element analysis report and table, click here.

Sample preparation

Solid samples received for XRF analysis are dried at 60° C or 110° C and finely ground in a ring mill. Aqueous samples are dried down in a cellulose matrix prior to grinding. Boric acid backed discs of ground material are prepared under high pressure and analysed under vacuum.

Elements analysed

To view a layout of the elements that are available for Semiquant analysis, click here.

Quality assurance

Semiquant is calibrated using Siemens standard samples containing known concentrations of all the elements present. A wide range of geochemical international standard reference materials are routinely examined in accordance with the requirements of International Accreditation New Zealand - ISO 17025.