次灵敏线直接比较火焰原子吸收光谱法测定工业碳酸锶的纯度

DIRECT COMPARING OF FLAME ATOMIC ABSORPTION SPECTRUM USING HYPOSENSITIVE WAVELENGTH IN DETERMINING THE PURITY OF INDUSTRIAL STRONTIUM CARBONATE

研究了次灵敏线407.8nm原子吸收光谱法测定工业碳酸锶中碳酸锶含量的条件,建立了一种全新的分析方法,即在测定过工业碳酸锶的杂质含量后,用高纯物质配制与被测样品成分一致的工作溶液,与样品溶液比较测定。该方法要求两种溶液的基体;介质;酸度;释放剂尽量一致,并同时使用标准曲线法和直线比较法。该方法准确,简单,快速,同一样品八次测定结果的极差小于0.3%,相对标准标差为0.10%。测定结果与国标方法相吻合。

This paper studied the conditions atomic absorption spectrum of hyposensitive of determining the content of industrial strontium carbonate using wavelength 407.8nm, established a completely new analytic method, i.e., after measuring the content of impurities in industrial strontium carbonate, prepare a working solution equal in composition to the sample to be tested with high purity substance, and then make a comparative measurement of the sample solution. This method is accurate, simple, and quick, 8 times of same sample gives an extreme difference less then 0.3% and relative standard deviation 0.10%. The measurement results are compatible with those resulted from international standard methods.