Contribution of subsoil and aquifer microorganisms to ground-water quality. Technical report, 1 July 1988-30 June 1989. (Final)
Little information about the microbiology of the subsurface environment is available. The study was conducted to better understand the microbiology and microbial processes that occur in the subsurface under a typical midwestern agricultural soil. A 26-meter bore was installed in November of 1988. Sterile collections of soils were made at 17 different depths. A physical as well as biological investigation of the subsurface materials was conducted. Among the measured parameters were particle-size analysis, carbon, carbonates, nitrogen, phosphorus, potassium, and water-holding capacity. The level of three pesticides, atrazine, metolachlor, and alachlor, was determined. Microbial biomass was assessed using direct counts, phospholipid content, and plate counts. The ability of microbial populations resident in the strata to use glucose, phenol, aniline, (14)C-ring labeled 2-methyl-6-ethyl-aniline, (14)C-ring labeled metolachlor, (14)C-carbonyl labeled metolachlor, and atrazine was assessed. Physical analysis indicated that the site contained up to 17 different strata. The site materials were primarily glacial tills with high carbonate content. Microbial numbers and activity in the tills was much lower than either in the surface materials or the aquifer located at 25 m.
- Research Organization:
- Purdue Univ., Lafayette, IN (USA). Water Resources Research Center
- OSTI ID:
- 5518872
- Report Number(s):
- PB-89-217566/XAB; TR-177; TRN: 91-011048
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON 14
TRACER TECHNIQUES
GROUND WATER
WATER QUALITY
SOILS
MICROORGANISMS
AQUIFERS
BIOMASS
ENVIRONMENTAL TRANSPORT
NUTRIENTS
PARTICLE SIZE
PESTICIDES
PROGRESS REPORT
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON ISOTOPES
DOCUMENT TYPES
ENERGY SOURCES
ENVIRONMENTAL QUALITY
EVEN-EVEN NUCLEI
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MASS TRANSFER
NUCLEI
OXYGEN COMPOUNDS
RADIOISOTOPES
RENEWABLE ENERGY SOURCES
SIZE
WATER
YEARS LIVING RADIOISOTOPES
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
510300 - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- (-1989)