Science Inventory

FLOW CYTOMETRIC DETECTION AND SIZING OF FLUORESCENT PARTICLES DEPOSITED AT A SEWAGE OUTFALL SITE

Citation:

Newman, K., S. Frankel, AND K. Stolzenbach. FLOW CYTOMETRIC DETECTION AND SIZING OF FLUORESCENT PARTICLES DEPOSITED AT A SEWAGE OUTFALL SITE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/269 (NTIS PB91145177), 1990.

Description:

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. low 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 alter their release. Typical areal concentrations after 8 days were 1000 ug m-2 (or roughly 100 ppb in the top 0.5 cm of sediment cores) corresponding to 7% of the total released. he 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.

Record Details:

Record Type:DOCUMENT( REPORT )
Product Published Date:12/31/1990
Record Last Revised:12/22/2005
Record ID: 42713