Record Display for the EPA National Library Catalog

RECORD NUMBER: 7 OF 15

OLS Field Name OLS Field Data
Main Title Improved Flotation Technique for Microscopy of 'In situ' Soil and Sediment Microorganisms.
Author Bone, T. L. ; Balkwill, D. L. ;
CORP Author Florida State Univ., Tallahassee. Dept. of Biological Science.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Year Published 1986
Report Number EPA/600/J-86/031;
Stock Number PB86-190139
Additional Subjects Flotation ; Sediments ; Microorganisms ; Aquifers ; Tests ; Electron microscopy ; Saturated soils ; Morphology ; Sampling ; Cells(Biology) ; Viability ; Populations ; Growth ; Recovery ; Reprints ; Species diversity
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB86-190139 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 9p
Abstract
An improved flotation method for microscopical examination of in situ soil and sediment microorganisms was developed. Microbial cells were released into gel-like flotation films that were stripped from soil and sediment aggregates as these aggregates were submerged in 0.5% solutions of poly-vinylpryrrolidone (PVP). The use of PVP solutions instead of water facilitated the release of films from saturated samples like aquifer sediments, as well as from typical surface soils. In situ microbial morphological characteristics could then be surveyed rapidly by light microscopical examination of films stained with acridine orange. The method effectively determined the range of morphological diversity in a variety of sample types. (Copyright (c) 1986, American Society for Microbiology.)