用ICP-AES内标工作曲线法测定润滑油中钙含量

Measurement of calcium content in lubricating oil via ICP-AES Internal standard working curve method

研究了用电感耦合等离子发射光谱仪（ICP-AES）内标工作曲线法测定润滑油中钙含量的分析方法。通过选择合适的内标物及实验条件，方法的标准偏差为2．2％，钙回收率为96％-104％，可以用于测定润滑油中的钙含量。

ICP-AES Internal standard working curve method was established to determine the content of calcium in lubri-cating oil. The standard deviation and recovery of this method can be reached to 2. 2% and 96% - 104% ,respectively,and this method can be used to determine the content of calcium in lubricating oil.