A novel separation technique for bromide in the presence of various anions with a liquid membrane was' reported. Initially, bromide ion was oxidized by sodium dichromate in acidic media (aqueous or source phase), followed by a continuous chloroform extraction (organic phase). Next, a back-extraction of bromine into a second aqueous phase (receiving phase) containing nitrite ions was conducted in order to reduce bromine into bromide. Parameters affecting the transport efficiency as well as the influences of potential interfering ions in this,bromide extraction method were studied. After a 70-min extraction period, 91.4 +/- 1.2% of the bromide ions were transported across the liquid membrane. The developed extraction method was used for the detection of bromide ions in seawater.