%0 Journal Article %1 Vold2003 %A Vold, I. M. N. %A Varum, K. M. %A Guibal, E. %A Smidsrod, O. %C THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND %D 2003 %I ELSEVIER SCI LTD %J Carbohydr. Polym. %K ; ;; [ISI:] adsorption; beads; chitosan; coefficient complexation; copper; dependence; equilibrium; exchange ion; metal metal-ions; n-acetylation; properties; selectivity sorption %N 4 %P 471 -- 477 %T Binding of ions to chitosan - selectivity studies %V 54 %X Selectivity coefficients for binding of negative and positive ions to chitosans of different chemical composition have been determined by equilibrium dialysis. Chitosans with different fraction of acetylated units (F-A of 0.01 and 0.49) generally behaved similarly in their selectivity towards both negative and positive ions. No selectivity was found in the binding of chloride and nitrate ions, while chitosan showed a strong selectivity towards molybdate polyoxyanions, with selectivity coefficients around 100. Chitosan showed a strong selectivity towards copper (Cu2+) compared to the metal ions zinc (Zn2+), Cadmium (Cd2+) and nickel (Ni2+), with selectivity coefficients from 10 to 1000, while little or no selectivity could be detected with the other metal ions. Ionic strength and pH did not influence the selectivity coefficients of the chitosans towards the metal ions. (C) 2003 Elsevier Ltd. All rights reserved.

@article{Vold2003, __markedentry = {[phpts:6]}, abstract = {Selectivity coefficients for binding of negative and positive ions to chitosans of different chemical composition have been determined by equilibrium dialysis. Chitosans with different fraction of acetylated units (F-A of 0.01 and 0.49) generally behaved similarly in their selectivity towards both negative and positive ions. No selectivity was found in the binding of chloride and nitrate ions, while chitosan showed a strong selectivity towards molybdate polyoxyanions, with selectivity coefficients around 100. Chitosan showed a strong selectivity towards copper (Cu2+) compared to the metal ions zinc (Zn2+), Cadmium (Cd2+) and nickel (Ni2+), with selectivity coefficients from 10 to 1000, while little or no selectivity could be detected with the other metal ions. Ionic strength and pH did not influence the selectivity coefficients of the chitosans towards the metal ions. (C) 2003 Elsevier Ltd. All rights reserved.}, added-at = {2011-11-04T13:47:04.000+0100}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND}, author = {Vold, I. M. N. and Varum, K. M. and Guibal, E. and Smidsrod, O.}, authoraddress = {Norwegian Univ Sci & Technol, Dept Biotechnol, NOBIPOL, N-7491 Trondheim, Norway. ; Ecole Mines Ales, Lab Genie Environm Ind, F-30319 Ales, France.}, biburl = {https://www.bibsonomy.org/bibtex/2a7c2127583d3b761170d1921f1712647/pawelsikorski}, citedref = {ANTHONSEN MW, 1993, CARBOHYD POLYM, V22, P193 ; BASSI R, 2000, SEPAR SCI TECHNOL, V35, P547 ; BECKER T, 2000, REACT FUNCT POLYM, V44, P289 ; BLAIR HS, 1980, J CHEM TECH BIOTECHN, V31, P6 ; CLARKE FE, 1950, ANAL CHEM, V22, P553 ; DOMARD A, 1987, INT J BIOL MACROMOL, V9, P98 ; DRAGET KI, 1992, BIOMATERIALS, V13, P635 ; DRAGET KI, 1992, P 5 INT C CHIT CHIT, P604 ; DRAGET KI, 1996, POLYM GELS NETW, V4, P143 ; ERNST E, 1998, PERFUSION, V11, P461 ; EROSA MSD, 2001, HYDROMETALLURGY, V61, P157 ; FOCHER B, 1986, MAKROMOL CHEM, V187, P2609 ; FORLAND KS, 1989, KVANITATIV ANAL ; GUIBAL E, 1999, POLYM INT, V48, P671 ; GUIBAL E, 2000, SEPAR SCI TECHNOL, V35, P1020 ; HAUG A, 1970, ACTA CHEM SCAND, V24, P843 ; HELLEBUST JA, 1978, NITRAT UPTAKE HDB PS, S401 ; INOUE K, 1993, B CHEM SOC JPN, V66, P2915 ; JUANG RS, 2002, ADSORPTION, V8, P71 ; KOSHIJIMA T, 1973, CELL CHEM TECHNOL, V7, P197 ; KURITA K, 1979, J APPL POLYM SCI, V23, P511 ; MCKAY G, 1987, J CHEM TECHNOL BIOT, V40, P63 ; MEITES L, 1963, HDB ANAL CHEM ; MITANI T, 1991, AGR BIOL CHEM TOKYO, V55, P2419 ; MITANI T, 1995, J ENVIRON SCI HEAL A, V30, P669 ; MUZZARELLI RAA, 1977, CHITIN, S139 ; ONSOYEN E, 1990, J CHEM TECHNOL BIOT, V49, P395 ; ORMROD DJ, 1998, ATHEROSCLEROSIS, V138, P329 ; PIRON E, 1998, INT J BIOL MACROMOL, V22, P33 ; RHAZI M, 2002, EUR POLYM J, V38, P1523 ; RHAZI M, 2002, POLYMER, V43, P1267 ; ROBERTS GAF, 1992, CHITIN CHEM ; SMIDSROD O, 1968, ACTA CHEM SCAND, V22, P1989 ; SMIDSROD O, 1972, ACTA CHEM SCAND, V26, P2063 ; STRICKLAND JHD, 1972, PRACTICAL HDB SEAWAT ; TSEZOS M, 1983, BIOTECHNOL BIOENG, V25, P2025 ; TYTKO KH, 1983, Z ANORG ALLG CHEM, V503, P43 ; VARUM KM, 1991, CARBOHYD RES, V211, P17}, interhash = {9ba1e7c41ab19f9478438bc20b8f0c90}, intrahash = {a7c2127583d3b761170d1921f1712647}, isifile-dt = {Article}, isifile-ga = {742UC}, isifile-j9 = {CARBOHYD POLYM}, isifile-nr = {38}, isifile-pi = {OXFORD}, isifile-rp = {Varum, KM, Norwegian Univ Sci & Technol, Dept Biotechnol, NOBIPOL, Sem ; Saelands Vei 6-8, N-7491 Trondheim, Norway.}, isifile-sc = {Chemistry, Applied; Chemistry, Organic; Polymer Science}, isifile-tc = {7}, issn = {0144-8617}, journal = {Carbohydr. Polym.}, keywords = {; ;; [ISI:] adsorption; beads; chitosan; coefficient complexation; copper; dependence; equilibrium; exchange ion; metal metal-ions; n-acetylation; properties; selectivity sorption}, language = {English}, month = {DEC 1}, number = 4, owner = {phpts}, pages = {471 -- 477}, publisher = {ELSEVIER SCI LTD}, size = {7 p.}, sourceid = {ISI:000186535600009}, timestamp = {2011-11-04T13:47:27.000+0100}, title = {Binding of ions to chitosan - selectivity studies}, volume = 54, year = 2003 }