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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/31/4/1079
Last checked: 12/15/2016
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https://dl.sciencesocieties.org/publications/jeq/articles/31/4/1079
Last checked: 12/15/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Allaire, S. E.;
Yates, S. R.;
Ernst, F. F.;
Gan, J. |
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| Author Affiliation: | Allaire: Département des Sols et de Génie Agroalimentaire, Faculté des Sciences de l'Agriculture et de l'Alimentation, Université Laval, Cité Universitaire, Quebec, Canada; Yates, Ernst, and Gan: George E. Brown Jr. Salinity Lab. USDA-ARS, Riverside, California |
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| Title: | A dynamic two-dimensional system for measuring volatile organic compound volatilization and movement in soils |
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| Section: | Technical reports
Other records with the "Technical reports" Section
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| Source: | Journal of Environmental Quality. Vol. 31, No. 4, July/August 2002, p. 1079-1087. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Analytical methods; Volatility; Mobility; Organic matter; Atmosphere; Emissions; Air pollution; Gas chromatography; Chemical properties of soil; Infiltration; Degradation; Pressure; Irrigation; Cost efficiency
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| Abstract/Contents: | "There is an important need to develop instrumentation that allows better understanding of atmospheric emission of toxic volatile compounds associated with soil management. For this purpose, chemical movement and distribution in the soil profile should be simultaneously monitored with its volatilization. A two-dimensional rectangular soil column was constructed and a dynamic sequential volatilization flux chamber was attached to the top of the column. The flux chamber was connected through a manifold valve to a gas chromatograph (GC) for real-time concentration measurement. Gas distribution in the soil profile was sampled with gas-tight syringes at selected times and analyzed with a GC. A pressure transducer was connected to a scani-valve to automatically measure the pressure distribution in the gas phase of the soil profile. The system application was demonstrated by packing the column with a sandy loam in a symmetrical bed-furrow system. A 5-h furrow irrigation was started 24 h after the injection of a soil fumigant, propargyl bromide (3-bromo-1-propyne;3BP). The experience showed the importance of measuring lateral volitalization variability, pressure distribution in the gas phase, chemical distribution between the different phases (liquid, gas, and sorbed), and the effect of irrigation on the volatilization. Gas movement, volatilization, water infiltration, and distribution of degradation product (Br-) were symmetric around the bed within 10%. The system saves labor cost and time. This versatile system can be modified and used to compare management practices, estimate concentration-time indexes for pest control, study chemical movement, degradation, and emissions, and test mathematical models." |
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| Language: | English |
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| References: | 27 |
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| Note: | Pictures, b/w
Graphs
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Allaire, S. E., S. R. Yates, F. F. Ernst, and J. Gan. 2002. A dynamic two-dimensional system for measuring volatile organic compound volatilization and movement in soils. J. Environ. Qual. 31(4):p. 1079-1087. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/31/4/1079
Last checked: 12/15/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/articles/31/4/1079
Last checked: 12/15/2016
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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