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研究了用Ｓｐａｎ８０—三异辛胺—二甲苯乳状液膜体系迁移汞（Ⅱ）的行为及机理，确定了合适的迁移条件，并能使汞（Ⅱ）与常见离子得到分离．
The behavior and mechanism of migration of mercury (Ⅱ) by Span80-triisooctylamine-xylene emulsion liquid membrane system were studied. The suitable migration conditions were determined and mercury (Ⅱ) was separated from common ions.