Betterextract condition is obtained with orthogonal test,and the zinc element is put to the ad-dition and recovery test.The method give recoveries of 96.24%,variation coefficient of0.64%.

• 通过正交试验分析获得较优的萃取条件；并对锌元素作添加回收试验；得回收率为96.；24%25；变异系数为0