【摘要】 利用重量法和碘量法分别测定了无氰镀金用亚硫酸金钠的含金量。分析比较测定结果,得出较佳测定方法,即二盐酸十亚硫酸钠还原金重量法。该法操作简单,准确度高,标准偏差不大于0.05%。更多还原

【Abstract】 The thesis is to research into the analytical method of the gold-content measurement of Gold Sodium Sulfite Used for Cyanide-free Plating,contrast the analytical differences between the Gravimetric Method and the Iodometric Method,study the effects of the three analytical methods on the analytical results involved in the Gravimetric Method,and determine the measuring method concerning Gravimetric Method of hydrochloric acid plus sodium sulfite for reducing gold.The method is characterized by simple operation and high degree of accuracy with a standard deviation no less than 0.05 percent.更多还原