Record Display for the EPA National Library Catalog


Main Title Modification of the Neubauer Technique to Assess Toxicity of Hazardous Chemicals in Soils.
Author Thomas, J. M. ; Cline, J. F. ;
CORP Author Battelle Pacific Northwest Labs., Richland, WA.;Corvallis Environmental Research Lab., OR.
Year Published 1985
Report Number EPA/600/J-85/017;
Stock Number PB85-193498
Additional Subjects Toxicity ; Soil analysis ; Hazardous materials ; Chemical compounds ; Surface water ; Bioassay ; Revisions ; Assessments ; Performance evaluation ; Ground water ; Experimental design ; Economic analysis ; Farm crops ; Plant growth ; Plants(Botany) ; Chemical analysis ; Sampling ; Pesticides ; Reprints ; Toxic substances ; Liquid waste disposal ; Water pollution effects(Plants) ; Land pollution ; Neubauer technique ; Water pollution detection
Library Call Number Additional Info Location Last
NTIS  PB85-193498 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
The Neubauer technique was modified to provide a sensitive and economical phytoassay for soils and surface waters obtained from a chemical waste site. Use of individual plastic enclosures allowed safe handling and disposal over the course of the authors experiments. Laboratory tests showed that water from a holding basin was toxic to wheat plants at dilutions of less than 1% and that the authors modified Neubauer technique produced results compatible with both pot culture and the standard Neubauer test. Further testing of several inorganic constituents of the basin water pointed to an organic toxicant, even though the original water contained high levels of sodium, copper and other elements. The results of testing 26 samples from an abandoned waste pond were negative insofar as toxicity to wheat and lettuce seeds, whereas samples from an abandoned ditch allowed the authors to determine areal toxicity as well as toxicity as a function of depth and suggested that more than one species should be tested.