Flow-injection determination of anionic surfactants in natural waters in the presence of humic acids

Authors
Moskvin, LN Mikhailova, NV Moskvin, AL
Citation
Ln. Moskvin et al., Flow-injection determination of anionic surfactants in natural waters in the presence of humic acids, J ANALYT CH, 56(8), 2001, pp. 763-766
Citations number
9
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF ANALYTICAL CHEMISTRY
ISSN journal
10619348 → ACNP
Volume
56
Issue
8
Year of publication
2001
Pages
763 - 766
Database
ISI
SICI code
1061-9348(200108)56:8<763:FDOASI>2.0.ZU;2-P
Abstract
A procedure has been developed for the flow-injection extraction-photometri c determination of anionic surfactants in natural waters in the presence of humic acids. The interference from humic acids is not observed up to conce ntrations of 20 mg/L. The procedure is based on the extraction-chromatograp hic separation of ion pairs of anionic surfactants with Methylene Blue, the elution of the separated ion pairs with chloroform, and their recovery fro m the aqueous phase in a chromatomembrane cell. The calibration range of an ionic surfactants for a sample volume of 80 mL is 50-500 mug/L.