Premium
Determination of Anionic Surfactant in Fresh Water and in Sea Water
Author(s) -
Ho WuHsiung,
Lin BiJen
Publication year - 1993
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199300005
Subject(s) - chemistry , cationic polymerization , molar absorptivity , extraction (chemistry) , pulmonary surfactant , xylene , solvent , chromatography , seawater , detection limit , nuclear chemistry , organic chemistry , biochemistry , physics , oceanography , optics , geology , benzene
Ion pairs formed from suitable cationic dye and anionic surfactant in water were separated by solvent extraction. The extracts were used subsequently for spectrophotometric determinations. The extraction of ion pairs with various combinations is described. Of the dyes and solvents examined, ethyl violet and p‐ xylene are the most useful combination as the cationic dye and extraction solvent. The extracts are determined spectrophotometrically at 611.5 nm; the molar absorptivity is 1, 01 × 10 5 M −1 cm −1 . The detection limit is 1.4 ppb in water. The method is simple, rapid and sensitive. It can also be applied to the determination of anionic surfactants in sea water.