ACTA Pharmaceutica Sciencia 2004 , Vol 46 , Num 2
DETERMINATION OF LAS BY METACHROMATIC METHOD IN SEAWATER AND RESERVOIR WATER
AHMET BEKTAŞ, KASIM C GÜVEN
Istanbul Regional Hygenic Institute ,Zeytinburnu ,Istanbul, Turkey Linear alkylbenzene sulfonate was determined usually by methylene blue active substances method (MBAS) in water at a-band of the dye. A metachromatic method is proposed for the determination of anion active substances using various dyes as methylene blue, azur I, Nile blue and toluidine blue at α- and β- bands. Similar results were obtained with MBAS and metachromatic method. Thus the proposed metachromatic method can be used as well as MBAS method. Keywords : LAS, METACHROMASY, METHYLENE BLUE, AZURE I, NILE BLUE, TOLUIDINE BLUE

Istanbul Medipol University