原子吸收分光光度法测定复混肥料中氯含量

Determination of Chlorine Content in Compound Fertilizers by Atomic Absorption Spectrophotometry

采用加入过量的硝酸银溶液 ,用原子吸收分光光度法测量剩余的银离子 ,间接测量氯含量。当肥料中氯含量高时 ,本方法的准确度、精密度与国标法相当 ,当氯含量低时 (<1% )则优于国标法。

By the addition of an excess of silver nitrate solution and the determination of surplus silver ions with AAS, the chlorine content is thus determined indirectly. When the chlorine content in the fertilizers is high, this method is equivalent to the national standard method in terms of accuracy and precision, and when the chlorine content is low (<1%), the former is better than the latter.