Abstract
A determination of anionic surfactants with an automatic continuous liquid-liquid extractor is reported in this paper. The method involves the formation of the detergent-(1,10-phenanthroline-copper(II)) ion pair and extraction into methyl isobutyl ketone. The overall concentration of anionic surfactants can be determined indirectly by measurement of copper present in the organic layer by atomic absorption spectrometry. A phase separator fitted with a PTFE porous membrane was specially designed for the determination. The optimum experimental conditions for determining detergents in the concentration range 0.1-5.0 ..mu..g/mL are described. The relative standard deviation found was 0.8%. The method is highly selective and free from the interference of nonionic surfactants and has been applied to the determination of anionic surfactants in wastewaters. The results show good agreement with those obtained by the classical methylene blue method.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
