elution
  洗淨; 洗提; 洗提; 洗提法; 洗脫
  elu·tion /-ˈluʃən/ 名詞
  洗脫,洗提
  elution
       n : the process of extracting one material from another by
           washing with a solvent to remove adsorbed material from
           an adsorbent (as in washing of loaded ion-exchange resins
           to remove captured ions); used to obtain uranium ions