关键词: 海水, 溴, 提取, 纯化

Abstract: Bromine is one of the important chemical materials.It has been widely used in the fields of flame retardants，oil exploration，fungicides，pesticides, photographic materials，and pharmaceutical etc..Bromine′s preparation technology and potential value are highly attached by domestic and foreign scholars.The status of bromine production and extraction methods from sea water，including air stripping method，steam distillation method，ion exchange adsorption method，and membrane separation method at home and abroad were briefly introduced.The advantages and disadvantages of those methods were compared.Meanwhile，the preparation method of ultrapure bromine was briefly described.Finally，the future development direction of extracting bromine from sea water was suggested.

Key words: sea water, bromine, extraction, purification