فهرست مقالات Human blood sample دسترسی آزاد مقاله صفحه چکیده متن کامل 1 - Preconcentration based dispersive liquid-liquid microextraction for spectrophotometric determination of zinc in natural water and human blood after multivariate optimization based on Box-Behnken design Ali Niazi Mona Akbari Roza Negahdari Maryam Sarkhosh Asiyeh Khosravi