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六、火焰光度法测定钾钠直接分取主液10—20毫升于扁平皿中,与标准钾钠溶液0.5毫克、1毫克、3毫克、5毫克等组在火焰光度计上同时进行测定,这样在统一实验条件下进行,免除了意外的误差。计算:K_2O 或 Na_2O%=(A×100)/S式中:A——对比标准曲线所查得的 K_2O 或 Na_2O 的毫克数;S——试样重(250毫克)。采用蔡司(Zeiss)Ⅲ型火焰光度计,以苯蒸汽作燃料,调节气压表为0.4KP/厘米~2和液柱压力为20—30厘米,进行以下实验。钠对钾无干扰现像,但钾对钠发生干扰,因此测出
Sixth, the flame photometric determination of sodium and potassium directly to the main liquid 10-20 ml in flat, and standard potassium sodium solution 0.5 mg, 1 mg, 3 mg, 5 mg and other groups in the flame photometer at the same time determination, so Under the unified experimental conditions, eliminating the accidental error. Calculation: K_2O or Na_2O% = (A × 100) / S Where: A - Comparison of the standard curve of the milligrams of K_2O or Na_2O; S - Sample weight (250 mg). Using Zeiss III flame photometer, using benzene vapor as fuel, adjusting the barometer to 0.4 KP / cm 2 and the liquid column pressure to 20-30 cm, the following experiment was carried out. Sodium has no interference with potassium, but potassium interferes with sodium and is therefore detected