在测定食品中糖精钠含量的方法中,薄层层析法仅能供半定量用,比色法和滴定法不但操作费时,而且容易受食品成份干扰,回收率差。笔者使用极谱分析法进行测定。通过方法试验,确证了糖精浓度与极限扩散电流成直线关系;选择了以氯化铵-氢氧化铵缓冲液(pH=7.5)作为极谱分析的支持电解质,测出糖精的E_(1/2)=-1.58V(对饱和甘汞电极)。按照笔者拟出的分 Among the methods of determining the content of sodium saccharin in foods, the TLC method can only be used for semi-quantitative analysis, and the colorimetric method and the titration method are not only time-consuming to operate, but also easily disturbed by the food ingredients and the recovery rate is poor. The author uses polarographic analysis for determination. Through the method test, it was confirmed that the concentration of saccharin was linear with the limit diffusion current. Ammonium chloride-ammonium hydroxide buffer (pH = 7.5) was selected as the support electrolyte for polarographic analysis to determine the E_ (1/2) ) = - 1.58V (for saturated calomel electrode). In accordance with the author to draw the points