Energy Dispersive X-Ray Spectroscopy EDS with of Wet Samples with QX Capsules
EDS is most often used for qualitative elemental analysis to determine which elements are present, and to conclude their relative abundance. One of the challenges facing this technique is the ability to apply it on wet samples. The QX capsule, based on QuantomiX proprietary WETSEM® technology, provides the solution by enabling qualitative EDS measurement and analysis of wet samples such as creams, solutions, and other liquid containing specimens.
In Figure 1, a sample of pesticide is imaged and analyzed by EDS. The elemental composition of the particles in the sample is determined by selected area EDS. Until now, specimens such as these could not have been analyzed by EDS in their native form, and other wet chemical methods had to be used.
In Figure 2, the image and EDS spectrum of a gel deodorant are clearly seen. The different phases are visualized and the chemical composition is directly determined from the EDS spectrum.
EDS with WETSEM® Technology - Stretching Science to New Extremes
Wet EDS provides the opportunity to image and analyze the final product without assuming homogeneity. In wet EDS, sample natural heterogeneity is retained and adjacent structures can be directly compared (see analysis below).
The QX capsules eliminate the need to dry the sample, and ensure that artifacts accumulated as a result of drying processes do not compromise sample integrity. WETSEM® technology presents a tangible solution for formulation and quality control processes in industrial fields.