不溶物质成分解析研究

Study of insoluble substances' component analysis

采用傅里叶红外光谱仪分析了样品A的特征官能团,采用能谱仪分析了样品的成分,采用X射线衍射仪分析了样品B的结构,采用扫描电子显微镜分析了样品C的表面形貌。通过分析可知,3种未知固体样品均为碳酸钙,并都可能经过了一定的表面处理。不同的是,样品A是方解石型碳酸钙和文石类碳酸钙的混合物,并含有少量聚电解质;样品B为一般的方解石型碳酸钙;样品C为白云石和方解石型碳酸钙的混合物。

By using Fourier transform infrared spectroscopy （FTIR ） ,the special functional groups of the insoluble substances can be obtained .By using the energy dispersive spectrometer （EDS ） ,X‐ray diffraction analysis （XRD ） , and the scanning electron microscopy （SEM ） ,the component ,structure and surface morphology of samples can be got respectively .By studying ,all the three samples are solid calcium carbonate and are modified on the surface .The difference is that the sample A is a mixture of aragonite‐type calcium carbonate and calcite‐type calcium carbonate which contains some polyelectrolyte .Sample B is the common calcite‐type calcium carbonate .Sample C is a mixture of dolomite and calcite‐type calcium carbonate .