Request for the detection method of calcium and magnesium ions in industrial sodium carbonate (soda ash) using inductively coupled plasma emission spectrometry

1. Sample preparation: Take an appropriate amount of industrial sodium carbonate sample, dissolve it in distilled water, and dilute it to a certain volume in a standard container. 2. Instrument preparation: Turn on the inductively coupled plasma optical emission spectrometer (ICP-OES), and perform preheating and calibration according to the instrument’s requirements. 3. Standard curve: Prepare standard solutions of calcium and magnesium at different concentrations, determine the intensity of their emission spectra using ICP-OES, and establish a standard curve. 4. Sample analysis: The prepared sodium carbonate solution sample is tested using ICP-OES, and the emission spectrum intensities of calcium and magnesium are recorded. 5. Data processing: Based on the standard curve, the measured emission intensity is converted into the actual content of calcium and magnesium, thereby determining the concentration of calcium and magnesium ions in the sodium carbonate sample. Ensure the accuracy of equipment operation and the representativeness of the samples throughout the process, in order to obtain reliable test results. .