【摘要】 用过氧化钠熔融酸化的方法处理样品,用同一母液分别以过硫酸铵氧化容量法测定铬、钼蓝光度法测定磷,过硫酸铵银盐氧化光度法测定锰。通过控制测定的酸度,各元素线性良好,测得铬、磷、锰的相对标准偏差分别小于0.55%、4.75%、3.76%。该方法可缩短分析周期,精密度、准确度高。更多还原

【Abstract】 Sodium peroxide is used to melt and acidate samples and then with the same liquor,the ammonium persulfate oxidation volumetric method,molybdenum blue photometric method and ammonium persulfate argento-oxidation photometric method are respectively used to determine Cr,P and Mn.Through controlling the acidity,each element’s linearity is fine.The relative standard deviations(RSD) of Cr,P and Mn are less than 0.55%,4.75% and 3.76% respectively.The methods can shorten the analytical period,showing higher precision and accuracy.更多还原