Trace element analysis (TEA)
TEA involves the identification and quantification of trace levels of elements present in a physical product sample. These elements are absorbed into products, like food and timber, from the surrounding environment, including the underlying geology and water.
For this reason, the combination of these elements is unique to their environment or origin, making their analysis critical to determining where products came from. This type of analysis uses various instrumentation techniques, such as mass spectrometry, atomic absorption spectroscopy, and atomic emission spectroscopy, to detect and measure elements at parts-per-million (ppm) and parts-per-billion (ppb) levels.
Stable isotope ratio analysis (SIRA)
SIRA, or isotopic testing, refers to the analysis of the isotope ratios of the light elements such as carbon (δ13C), oxygen (δ18O), hydrogen (δ2H), nitrogen (δ15N), and sulfur (δ34S). The technology is used in ecology, climate science, biogeochemistry, hydrology, forensic science, anthropology, atmospheric chemistry, and in trade regulation. SIRA databases for origin verification have been developed for many commodities, including timber. They offer useful data that enhances the accuracy and robustness of our origin verification service.