(Supported by NIEHS Superfund ESO4913 to D. Carpenter). The adsorption of polychlorinated biphenyls (PCB's) onto river clay depends upon the size of the clay particle, the type of particles (elemental analysis) and the geometry of the particles. HVEM and IVEM were used to determine the clay particle size, the elemental composition and the shape. We hope to be able to locate the actual PCB adsorption sites on the particles in the future. Using the IVEM, energy-dispersive X-ray microanalysis spectra and digital micrographs were taken of particles of St. Lawrence river clay containing PCB's. Cryo-EM was used to retain the volatile PCB's. Then the HVEM was used to provide improved images of the larger particles analyzed by the IVEM, and wide-field overviews of the analysis areas. The results were presented at Microscopy and Microanalysis '98 in August. Tivol, W.F., Casey, A.C., Liu, X-M, Bush, B. (1998) Binding of polychlorinated biphenyls to sediment. Microscopy and Microanalysis Vol 4, suppl. 2 (Proc. Microscopy and Microanalysis '98) Ed. G. Bailey, et al., Springer , New York, pp. 498-499.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR001219-18
Application #
6119668
Study Section
Project Start
1999-01-01
Project End
1999-12-31
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
18
Fiscal Year
1999
Total Cost
Indirect Cost
Name
Wadsworth Center
Department
Type
DUNS #
110521739
City
Menands
State
NY
Country
United States
Zip Code
12204
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