Determination of the Environmental Fate and Transport of Methyl Bromide
Entry ID: USDA0574

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Summary
Abstract: The primary objective of "Determination of the Environmental
Fate and Transport of Methyl Bromide" is to determine soil
reactions, the transport characteristics, volatile emissions and
mass partitioning of methyl bromide to assess the environmental
impacts of the agricultural use of methyl bromide. This research
will provide the necessary information to determine,
scientifically, the environmental effects from the agricultural
use of methyl bromide.


Collection Organization: University of California, Riverside

Collection Methodology: Field experiments have been conducted to
quantity methyl bromide emissions. The field studies were
conducted on a 10-acre plot; the plot was covered with a tarp
for the first experiment, and the soil left bare for the second
experiment. The results of the first experiment, in which a mass
balance was conducted, indicated that approximately 40% of the
applied methyl bromide volatilized into the atmosphere. Very
preliminary analyses of the data from the second (non-tarped)
experiment indicate that approximately 30-40% of the applied
methyl bromide volatilzed. Laboratory column studies have
demonstrated that methyl bromide emissions can be siginificantly
reduced by the addition of water to soil.

Collection Frequency: Ongoing.

Update Characteristics: Ongoing.

LANGUAGE:

English
ACCESS/AVAILABILITY:

Data Center: University of California, Riverside
Dissemination Media: Available in hard copy publications.
Access Instructions: Contact the data center
Access Restrictions: None

Geographic Coverage
 N: 42.51 S: 32.02  E: -113.61  W: -124.9

Temporal Coverage
Start Date: 1993-01-01
Stop Date: 1996-12-31


Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA


Science Keywords
AGRICULTURE >AGRICULTURAL CHEMICALS >PESTICIDES    [Definition]
AGRICULTURE >SOILS >SOIL ABSORPTION    [Definition]
AGRICULTURE >SOILS >SOIL MOISTURE/WATER CONTENT    [Definition]
ATMOSPHERE >AIR QUALITY >EMISSIONS    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >TRACE GASES/TRACE SPECIES >METHYL BROMIDE    [Definition]
LAND SURFACE >SOILS >SOIL ABSORPTION    [Definition]
LAND SURFACE >SOILS >SOIL CHEMISTRY    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >HALOCARBONS AND HALOGENS >METHYL BROMIDE    [Definition]


ISO Topic Category
FARMING
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ENVIRONMENT
GEOSCIENTIFIC INFORMATION


Quality
Standard scientific protocols used; EPA Best Lab Practices
standards applied where possible in analysis.


Keywords
AGRICULTURE AND FOOD SECURITY
Agriculture And Food Security > Agricultural Production > Agricultural Chemicals
Environmental Protection > Pollution > Air Pollution
Land And Freshwater Resources > Soils > Soil Chemistry
CROP MANAGEMENT
ENVIRONMENTAL POLLUTION HAZARDS
HUMAN AND ENVIRONMENTAL HEALTH
METHYL BROMIDE
SOIL ABSORPTION
SOIL CONTAMINATION
SOIL FUMIGATION
SOIL POLLUTION
SOIL TRANSPORT
VOLATILIZATION


Originating Center
UCR


Data Center
Environmental Science, College of Natural and Agricultural Sciences, University of California, Riverside    [Information]
Data Center URL: http://envisci.ucr.edu/

Data Center Personnel
Name: MARYLYNN V. YATES
Phone: 909-787-5488
Fax: 909-787-2954
Email: mvyates at ucrac1.ucr.edu
Contact Address:
University of California
College of Agricultural Sciences
Soil and Environmental Sciences
135 Bourns Hall
City: Riverside
Province or State: CA
Postal Code: 92521
Country: USA


U.S. Salinity Laboratory, Agricultural Research Service, U. S. Department of Agriculture    [Information]
Data Center URL: http://www.ars.usda.gov/pwa/riverside/gebjsl

Data Center Personnel
Name: SCOTT R. YATES
Phone: 1-909-369-4803
Phone: 909-369-4803
Fax: 1-909-342-4964
Fax: 909-342-4942
Email: syates at ussl.ars.usda.gov
Contact Address:
USDA Agricultural Research Service
U.S. Salinity Laboratory
450 West Big Springs Road, Room 247
City: Riverside
Province or State: CA
Postal Code: 92507-4617
Country: USA


Personnel
MARYLYNN V. YATES
Role: TECHNICAL CONTACT
Phone: 909-787-5488
Fax: 909-787-2954
Email: mvyates at ucrac1.ucr.edu
Contact Address:
University of California
College of Agricultural Sciences
Soil and Environmental Sciences
135 Bourns Hall
City: Riverside
Province or State: CA
Postal Code: 92521
Country: USA


Publications/References
ADDITIONAL REFERENCES:

Gan, J., Yates, S.R., Spencer, W.F. and Yates, M.V. 1994.
Automated headspace analysis of fumigants 1,3-dichloropropene
and methyl isothiocyanate on charcoal sampling tubes. J.
Chromatography A 684:121-131.

Gan, J., Yates, S.R., Anderson, M.A., Spencer, W.F., Ernst,
F.F., and Yates, M.V. 1994. Effects of soil properties on
degradation and sorption of methyl bromide in soils. Chemosphere
29:2685-2700.

Gan, J., Yates, S.R., Spencer, W.F., and Yates, M.V.
Optimization of analysis of methyl bromide on charcoal sampling
tubes. J. Agric. and Food Chem., in press.

Yates, S.R., Ernst, F.F., Gan, J., and Spencer, W.F..
Quantifying methyl bromide losses from agricultural fields.

Creation and Review Dates
DIF Creation Date: 2005-09-12
Last DIF Revision Date: 2007-06-29

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