Movement and dissipation of toxicants and water in natural soil environments
Movement and dissipation of three 14C-labeled herbicides (atrazine, metolachlor, primisulfuron), tritium, water, bromide and nitrate was investigated in natural Dothan loamy sand soil cores in the field using 20 cm i.d. by 90 cm long steel column lysimeters. Half-life values for the herbicides ranged from 3 to 6 days in the field lysimeters to 14 to 49 days in laboratory flasks. Several acrylic polymers reduced losses and mobility of metolachlor and primisulfuron but none were effective on atrazine. None of the polymers reduced bioactivity of the compounds. Sorption of metolachlor by samples from different soil depths was highly correlated with organic carbon content of the soil. Soil column lysimeters proved to be useful in carrying out material balance studies on the movement and dissipation of chemicals in natural cores of Dothan loamy sand in the field.
- Research Organization:
- North Carolina State Univ., Raleigh, NC (United States)
- OSTI ID:
- 6777092
- Report Number(s):
- PB-93-173037/XAB; CNN: DI-14-08-0001-G1740
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HERBICIDES
FIELD TESTS
TOXIC MATERIALS
ENVIRONMENTAL TRANSPORT
BIODEGRADATION
BROMIDES
CARBON ISOTOPES
HALF-LIFE
LOSSES
LYSIMETERS
MATERIAL BALANCE
MATHEMATICAL MODELS
MOBILITY
NITRATES
ORGANIC COMPOUNDS
POLYMERS
SAND
SOILS
SORPTION
TRITIUM
WATER
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BROMINE COMPOUNDS
CHEMICAL REACTIONS
DAYS LIVING RADIOISOTOPES
DECOMPOSITION
HALIDES
HALOGEN COMPOUNDS
HAZARDOUS MATERIALS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MASS TRANSFER
MATERIALS
MEASURING INSTRUMENTS
NITROGEN COMPOUNDS
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PESTICIDES
RADIOISOTOPES
TESTING
YEARS LIVING RADIOISOTOPES
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)