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RECORD NUMBER: 130 OF 309

OLS Field Name OLS Field Data
Main Title Flow Cytometric Detection and Sizing of Fluorescent Particles Deposited at a Sewage Outfall Site.
Author Newman, K. A. ; Frankel, S. L. ; Stolenbach, K. D. ;
CORP Author Massachusetts Inst. of Tech., Cambridge. Ralph M. Parsons Lab.;Environmental Research Lab., Narragansett, RI.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/269 ;ERLN-NX06;
Stock Number PB91-145177
Additional Subjects Particle size distribution ; Cell flow systems ; Fluorescence ; Sewage treatment ; Water pollution ; Coagulation ; Settling ; Field tests ; Massachusetts ; Reprints ; Salem Sound
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB91-145177 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/13/1991
Collation 9p
Abstract
A suspension of fluorescent pigment particles (total mass, 120 kg) was injected over a period of several hours into a sewage outfall discharging into Salem Sound, MA. Flow cytometric analysis was successfully used to identify, quantify, and size the fluorescent pigment particles in bottom sediment and sediment trap samples collected 1-8 days after their release. Typical areal concentrations after 8 days were 1000 micrograms/cu m (or roughly 100 ppb in the top 0.5 cm of sediment cores) corresponding to approximately 7% of the total released. The size distributions of recovered pigment particles are identical with the size distribution in the initial suspension, indicating that, despite their exceptionally low coagulation efficiency, net deposition of the pigment particles is effected by coagulation with other solids either in the water column or at the sediment-water interface. (Copyright (c) by the American Chemical Society, 1990.)