It is important to determine the elemental content of scalp hair to evaluate human health and environmental contamination. Here, a new sample preparation method for total reflection X-ray fluorescence analysis was developed by directly digesting the human hair on the sample holder. A human hair sample was subjected to thermal nitric acid treatment for sample digestion and homogenization. The Zn concentration was estimated to be ~ 1.89 × 102 μg/g. We can evaluate other elements of human hair by using this method.
Keywords: Direct digestion on substrate; Human hair; Total reflection X-ray fluoresence analysis; Trace elements analysis.
© 2022. The Author(s), under exclusive licence to The Japan Society for Analytical Chemistry.