Abstract
The interaction of Coomassie brilliant blue G250 (CBBG) with cetyltrimethylammonium bromide (CTAB) has been investigated at pH 9.50 by the microsurface binding‐spectral correction (MSASC) technique. The experiments confirmed that the aggregation of CBBG on CTAB obeys the Langmuir isothermal adsorption. The aggregate was characterized. Results showed that the monomer aggregate, CBBG2CTAB was formed at 30°C with a binding constant of 6.46 × 103. The aggregation was applied to the quantitative determination of the cationic surfactant in water samples with satisfactory results.
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