火焰原子吸收法测定燃料乙醇中的钠离子

Determinnation of Sodium Ion in Fuel Ethanol by Flame Atomic Absorption Spectrometry

对采用燃烧器偏转-火焰原子吸收法在最灵敏分析线589nm测定燃料乙醇中钠离子的仪器条件及灵敏度、检出限、精密度、准确度进行了研究。结果表明，该方法在1—8mg／L范围内曲线线性好、灵敏度高、精密度好、准确度高，回收率在97．6％～101．7％，仪器检出限在0．21mg／L，方法检出限在0．36mg/L，经反复论证能够满足实际分析的需要。

On the deflection of the burner - flame atomic absorption method in line 589nm in the most sensitive analysis instrument conditions of the determination of sodium ions in fuel ethanol, and sensitivity, detection limit, precision and accuracy were studied. Found that the method is within the scope of the 1 - 8mg/L curve linear good, high sensitivity, good precision, high accuracy, recovery rate in 97.6 % -101.7%, the instrument detection limit in 0.21mg/L, method detection limit in 0.36 mg/L, after repeated argument can meet the needs of practical analysis.