Rapid Determination of Silica in Cement by Inductively Coupled Plasma Mass Spectrometry
Sodium hydroxide was used as a solvent to digest and extract silicon dioxide from cement samples.The HMI mode internal calibration method was used,and the silicon dioxide content in cement was quickly determined by inductively coupled plasma mass spectrometry(ICP-MS).Under the selected experimental parameters,the silicon standard curve ranges from 0 to 40 mg/L,with a correlation coefficient of 0.999 9.Two national standard substances for cement were tested and subjected to spiked recovery experiments.The test results were both within the recognized standard values,with a repeatability limit of 0.08%to 0.12%and a spiked recovery rate of 95.84%to 99.12%.The accuracy and precision were good.This method has simple analysis steps and can quickly and accurately determine the silicon dioxide content in cement,providing a research basis for the detection of silicon dioxide content in cement products.
inductively coupled plasma mass spectrometrycementsilicon dioxide
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