The recovery was 99. %( RSD was %) and 99.7( RSD was .87%) for ethinyl estradiol and levonorgestrel, respectively.
The recovery was 99. %( RSD was %) and 99.7( RSD was .87%) for ethinyl estradiol and levonorgestrel, respectively.
炔雌醇的回收率为 99． ％ ， R S D 为％ ，左旋甲基炔诺酮的回收率为 997％ ， R S D 为 87％ 。