The method of standard addition is employed in the blank and the sample solutions with addition of releasing agents for determining trace amounts of calcium in steel.
采用混合释放剂，及空白与试液都以标准加入法测定、扣除空白值的方法测定钢中微量钙。
2
In addition, the new method is high repeatable and accurate, and is suitable for the measurement of large quantities of tobacco sample.