The proposed method has been applied to the analysis of a CRM(GBW 07604) sample,the values of relative error of the 4 elements were in the range of 0.54%-9.3%,and values of recovery were in the range of 97.9%-101.0%.

• 用此方法测定杨树叶标准物质(GBW 07604)中铜、锌、铅、镍；相对误差在0.；54%25~9