ACTA Pharmaceutica Sciencia 2007 , Vol 49 , Num 2
THE INFLUENCE OF SALINITY OF SEAWATER ON THE DETERMINATION OF LAS BY MBAS METHODS
KASIM C GÜVEN, SELİN CUMALI
Istanbul University, Institute of Marine Sciences and Management, Vefa, Istanbul, Turkey The determination of LAS in seawater by MBAS method presents some difficulties. Many factors influence on this method. Some of them, salinity have an important role. In this work LAS was determined in various seawater surrounded Turkey as salinity of 16-18 ‰ (the Black Sea), 24 ‰ (Sea of Marmara) and 36 ‰ (Mediterranean Sea). All the solutions were prepared with similar salinity of examined water and the blank used was prepared with similar salinity of seawater described in calibration curve omitting LAS. The other modification was made on the blank. It was prepared with similar salinity of seawater described in calibration curve omitting LAS. It was found that salinity of seawater is effected on the results as the LAS amount found by Standard Methods is found 5-8.5 % lower than this proposed method. Keywords : LAS DETERMINATION, BLANK, PURE CHLOROFORM, SALINE

Istanbul Medipol University