X-ray fluorescence (XRF) method is commonly used to determine the elemental composition of materials, including moisture content.
XRF analysis involves exposing a sample to an X-ray beam. The sample’s atoms absorb X-rays and emit secondary fluorescent X-rays with energy specific to the element present in the sample.
Gravimetric Method
This method entails directly measuring the mass lost from the sample after drying. The sample is weighed before and after drying, and the moisture content is calculated from the difference in mass.
Karl Fischer Titration Method
This method utilizes a chemical reaction to determine the water content in the sample. A reagent is added to the sample, and its reaction with water results in a color change. The moisture content is determined by measuring the amount of reagent required to reach the endpoint.
XRF Method
XRF analysis can indirectly determine moisture content by measuring the ratio of elements present in the sample. This is possible because the presence of moisture can influence the elemental composition of the sample.
The XRF method and the other methods described are effective in determining moisture content, each with its own advantages. The choice of method depends on the specific application and requirements.