A method has been developed to determine micro quantities of sulphate both in so 1 i d and 1 i qu i d samp 1 es. The su 1 pha te samp 1 es were reduced with a mixture of sodium hypophosphite, hydroiodic acid and acetic acid. The released hydrogen sulphide is swept to an optical cell and absorption measured at 203 nm, using a selenium hollow chathode lamp.
A HUSSAIN ,J ANWAR ,M I FAROOQI ,
You can use below filter to find your desired issue