NEW POLYMERIC AND OTHER TYPES OF SORBENTS FOR SOLID-PHASE EXTRACTION OF POLAR ORGANIC MICROPOLLUTANTS FROM ENVIRONMENTAL WATER

This article describes different types of sorbents for the solid-phase extraction of polar organic pollutants from environmental water and e mphasizes the use of the new synthesized sorbents, The most important new sorbents are the chemically modified polymeric resins with functio nal groups such as acetyl, hydroxymethyl, benzoyl and o-carboxybenzoyl , and the highly crosslinked polymers. These sorbents are compared and their properties described. Recoveries for the most polar compounds a re better when these new sorbents are used. Immunosorbents and molecul arly imprinted polymers are new types of extraction sorbents which are specific for a group of compounds and they enable chromatograms with no matrix interference to be obtained when analyzing some polar compou nds. The advantages and drawbacks of off-line and on-line procedures a re also discussed, and solutions to their limitations are proposed. (C )1998 Elsevier Science B.V.