Seeking advice on ICP detection methods for calcium and magnesium ions in industrial sodium carbonate (soda ash)

1. Sample pretreatment: Take an appropriate amount of soda ash sample (e.g., 0.1 g) and dissolve it in deionized water to prepare a 100 mL solution. 2. Sample digestion: Transfer the prepared sample solution into a digestion container; a small amount of nitric acid can be added to aid complete dissolution, and then the container is placed in a digestion apparatus for thorough digestion. 3. Filtration and dilution: The dissolved solution is filtered to remove insoluble substances and impurities, and then appropriately diluted as needed. 4. Set ICP detection parameters: Based on the specific model and performance of the ICP instrument, set the wavelengths suitable for detecting calcium and magnesium as well as other necessary parameters. 5. Preparation of standard curve: A series of standard curve samples with various concentrations were prepared using standard solutions of calcium and magnesium of known concentrations, to ensure measurement accuracy. 6. Sample injection: The processed sample solution is injected into the ICP instrument via an autosampler. 7. Data analysis: The spectral data obtained using instruments are combined with standard curves to calculate the levels of calcium and magnesium in the sample, followed by the output and interpretation of the data. Note: During the experiment, safe operating procedures must be observed. Wear appropriate protective gear, and pay attention to the proper handling and storage of chemical reagents. At the same time, the maintenance and calibration of the instruments are also crucial to ensure the accuracy and reliability of the data. .

Are you sure you’ve used this analysis method somewhere before? Is this a standard-compliant analytical method?