Interaction of some persistent organic pollutants with oligopeptide chains formed onto silica microparticles
Faculty of Pharmaceutical, Biomedical and Veterinary Sciences. Pharmacy
Research journal of chemistry and environment
, p. 68-75
University of Antwerp
Organic/inorganic hybrid materials with short peptide chains (oligo(S-benzyl-L-cysteine)) attached onto surface were used in gas chromatography as substrate for potential separation of some persistent organic pollutants. Poly [N-(beta-aminoethylene) acrylamide] (PAEA) adsorbed onto silica particles surface was cross-linked by the reaction between the accessible primary amino groups of the PAEA and 3,3', 4,4'-benzophenone tetracarboxylic dianhydride (BTCDA). After the formation of cross-linked polyelectrolyte network, fifteen repeated coupling reactions of boc-S-benzyl-L-cysteine were performed onto solid surface. The hybrid silica microparticles with or without oligopeptides chains onto surface were used in separation of a mixture formed by organophosphate flame retardants, polychlorinated biphenyls, organochlorine pesticides and polybrominated diphenyl ethers. The silica/PAEA-BTCDA was able to separate alkyl phosphates from aryl phosphates while the hybrids with oligopeptide (S-benzyl-L-cysteine)(n) were able to separate some polar organic compounds from non-polar or less polar compounds. The results of the present study showed that the tested materials may be successfully applied to separate the selected organic environmental contaminants when addressing their analysis from various abiotic and biotic liquid samples.