To accurately measure phosphorus or phosphate content in a solid sample of phosphate salts, several methods can be employed. Colorimetric assays are effective for measuring phosphate concentration in solution, with references to specific methodologies available in scientific literature. Dissolving the phosphate is a common approach, allowing for these assays to be utilized. Additionally, more precise analytical techniques may be considered, such as oxidizing phosphorus to phosphate and determining it through methods like ammonium molybdophosphate analysis. These techniques are standard in the analysis of similar materials, such as steel, and can enhance the accuracy of phosphorus quantification in solid samples.
