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| Titel: |
FTIR AND MOLECULAR MODELING STUDY OF THE INTERACTION BETWEEN b-CYCLODEXTRIN AND POLYCHLOROBIPHENYLS |
| Auteur: |
Ioana Stanculescu Iuliana Dobrica Cristina Mandravel Georgiana Mindrila |
| Verschenen in: |
Analele Universitatii Bucuresti. Chimie |
| Paginering: | Jaargang 19 (2010) nr. 2 pagina's 47-52 |
| Jaar: |
2010 |
| Inhoud: |
The production of polychlorobiphenyls (PCB’s) is forbidden but they are found frequently in different environmental compartment due to their high stability. In this paper the interaction between β-cyclodextrin (β-CD), a chiral selector, and a mixture of PCB’s, extracted from transformer oil, with 3 to 8 chlorine atoms was studied by FTIR spectrometry. The spectra of β-cyclodextrin in solid state obtained by KBr pellets technique and in saturated aqueous solutions obtained using CaF2 windows (1,510-3 M), of PCB’s mixture in C6H3Cl3 solution and the spectra of different phases of ternary PCB-C6H3Cl3-H2O and quaternary PCB-C6H3Cl3-β-CD-H2O systems were examined. The interaction was evidenced after changes in intensity of C=C vibrations band with maximum positioned at 1647.90, 1645.90 cm-1 Limits of the study due to work conditions are discussed. Molecular modeling offered information on the stability of the complexes. |
| Uitgever: |
Ars Docendi Publishing House (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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