论文部分内容阅读
对电化学与火焰原子吸收光谱仪联用中测试的几种主要影响因素进行了探讨。 试验的影响因素包括电化学预富集池填充微粒的大小及填充厚度、溶液底液支持电解质的种类及浓度、溶出阶段支持电解质的类型及浓度、电化学预富集电压及溶出测定阶段的反向电压的大小和流动液的流速。在选定的条件下, 经对铜离子的试验可使检出限降低2 个数量级。
Electrochemical and flame atomic absorption spectrometry in the test of several major influencing factors were discussed. Factors influencing the test include the size and packing thickness of the particles filled in the electrochemical pre-enrichment pool, the type and concentration of supporting electrolyte in the bottom solution of the electrolyte, the type and concentration of the supporting electrolyte in the dissolution phase, the electrochemical preconcentration voltage, The magnitude of the voltage and the flow rate of the flowing liquid. Under the selected conditions, the detection limit of copper ions can be reduced by two orders of magnitude.