Accession Number:

ADA199722

Title:

Evaluation of Graphite for Environmental Toxicity Using the Standard Aquatic Microcosm

Descriptive Note:

Technical rept. Jun 1986-Mar 1987

Corporate Author:

CHEMICAL RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUNDMD

Personal Author(s):

• Landis, Wayne G.
• Chester, Nancy A.
• Haley, Mark V.
• Johnson, Dennis W.
• Tauber, Renee M.

Report Date:

1988-08-01

Pagination or Media Count:

23.0

Abstract:

The impact of a graphite dust on an aquatic ecosystem model, the Standard Aquatic microcosm SAM, was investigated. Graphite dust produced effects that resembled eutrophication in that a diversity decreased, ammonia increased, and a photosynthesisrespiration ratio of less than one was observed in the highest concentration. Compared to brass dust, graphite has much less potential to adversely impact aquatic ecosystems.

Descriptors:

• *GRAPHITE
• *ENVIRONMENTAL IMPACT
• RATIOS
• ENVIRONMENTS
• IMPACT
• TOXICITY
• AMMONIA
• DUST
• ECOSYSTEMS
• RESPIRATION
• AQUATIC BIOLOGY
• ALGAE
• TOXICOLOGY
• NITRATES
• PHOTOSYNTHESIS
• BRASS
• EUTROPHICATION
• NITRITES

Subject Categories:

• Biological Oceanography
• Geology, Geochemistry and Mineralogy
• Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE