AAS Determination of Lithium in Lithium Cell with Microwave Assisted Sample Digestion and On-line Dilution Sample Introduction

The sample of lithium cell was treated with microwave digestion system and the sample solution was introduced by on-line dilution system.The content of lithium was determined by AAS.Under the optimized conditions,linearity range of lithium was kept from 0.01 mg·L-1 to 2.5 mg·L-1.The proposed method was applied to the determination of lithium in lithium cell,giving values of recovery in the range of 94.0%-104.0% and RSD (n=7) in the range of 1.6%-4.5%.