Chloride in the range of 0.1 to 0.5 mg is determined by gas-phase molecular absorp­tion spectrometry. Chloride samples were quantitatively oxidized by successive addition of potas­sium persulphate solution and sulphuric acid. The released chlorine gas was swept in stream of nitrogen through a long-path optical cell where its absorption was measured at 330 nm. Various parame ters concerning the determination have been investigated and chloride content in a num­ber of samples was determined by the described procedure.


M I FAROOQI ,O VASEEM ,J ANWAR ,A RAFIQ ,