Fluorescence characteristics of polychlorinated biphenyl isomers in cyclodextrin media

Journal Article · Mon Dec 31 23:00:00 EST 1984 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00132a008· OSTI ID:5134524

Femia, R A; Scypinski, S; Love, L J.C.

The fluorescence characteristics of several polychlorinated biphenyl (PCB) isomers in ..cap alpha..- and ..beta..-cyclodextrin (CD) are discussed and contrasted. The steric hindrance of PCBs imposed by the positions of the chlorine atoms on the rings determines the overall stability of the resulting inclusion complexes with cyclodextrin which is reflected in the fluorescence intensities. Less substituted homologues include into the CD cavity equally well in both cyclodextrins, but very heavily substituted molecules show drastic differences between their fluorescence intensities in the ..cap alpha..- and ..beta..-cyclodextrin solutions. This behavior can be employed as a method for spectral fractionation of PCB isomers. Spectral separation is demonstrated here for two variably substituted molecules, and the photophysical limitations of this approach are discussed.

• Research Organization: Seton Hall Univ., South Orange, NJ
• OSTI ID: 5134524
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 19:2; ISSN ESTHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
AROMATICS
CARBOHYDRATES
CHLORINATED AROMATIC HYDROCARBONS
DATA
DEXTRIN
EMISSION SPECTRA
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
FLUORESCENCE SPECTROSCOPY
HALOGENATED AROMATIC HYDROCARBONS
INFORMATION
ISOMERS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLYSACCHARIDES
SACCHARIDES
SPECTRA
SPECTRAL RESPONSE
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS