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2006

Iowa State University

Environmental Sciences

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Clear Creek Watershed: 150 Years Of Landscape Change, Andrew P. Rayburn, Lisa A. Schulte-Moore Dec 2006

Clear Creek Watershed: 150 Years Of Landscape Change, Andrew P. Rayburn, Lisa A. Schulte-Moore

Leopold Center Publications and Papers

This fact sheet summarizes the findings of a Leopold Center Ecology Initiative grant (2004-E08) that looked at landscape changes in the Clear Creek watershed in east central Iowa since 1940 using aerial photos and historical records.


Intra-Industry Trade, Multilateral Trade Integration, And Invasive Species Risk, Anh T. Tu, John C. Beghin Dec 2006

Intra-Industry Trade, Multilateral Trade Integration, And Invasive Species Risk, Anh T. Tu, John C. Beghin

CARD Working Papers

We analyze the linkage between protectionism and invasive species (IS) hazard in the context of two-way trade and multilateral trade integration, two major features of real-world agricultural trade. Multilateral integration includes the joint reduction of tariffs and trade costs among trading partners. Multilateral trade integration is more likely to increase damages from IS than predicted by unilateral trade opening under the classic Heckscher-Ohlin-Samuelson (HOS) framework because domestic production (the base susceptible to damages) is likely to increase with expanding export markets. A country integrating its trade with a partner characterized by relatively higher tariff and trade costs is also more ...


Restoring Perennial Cover And Ecological Function To Corn Belt Landscapes: The Iowa Farmer's Perspective, Ryan C. Atwell, Lisa A. Schulte, Lynne M. Westphal Dec 2006

Restoring Perennial Cover And Ecological Function To Corn Belt Landscapes: The Iowa Farmer's Perspective, Ryan C. Atwell, Lisa A. Schulte, Lynne M. Westphal

Natural Resource Ecology and Management Publications

The tallgrass prairie ecosystem of the North American Corn Belt region has experienced major alteration of hydrologic systems, nearly complete loss of natural perennial vegetation, and concomitant decline in species due to agricultural intensification. In this working landscape, restoration to pre-European settlement conditions is doubtful. However, current research posits that restoring strategically placed patches of perennial cover across agricultural watersheds, such as stream buffers, wetlands and prairies, as well as instituting more diverse cropping rotations, could bolster current ecological function and enhance the conservation of species. These studies also suggest that such restoration might increase socio-economic resilience in the region ...


Cost-Effective, Performance-Based Environmental Management, John Rodecap, Chad Ingels Nov 2006

Cost-Effective, Performance-Based Environmental Management, John Rodecap, Chad Ingels

Proceedings of the Integrated Crop Management Conference

Iowa has over 19,000 miles of interior rivers and streams, numerous lakes and other natural resources and considerable agricultural production capacity. With such an extensive network of water bodies running through the state it is no surprise that experts have estimated that 90% of Iowa water quality issues are attributed to agricultural land and related activities. This nonpoint source contamination often results from long term actions and will take a long time for measurable outcomes.


The Long-Run Impact Of Corn-Based Ethanol On The Grain, Oilseed, And Livestock Sectors: A Preliminary Assessment, Amani E. Elobeid, Simla Tokgoz, Dermot J. Hayes, Bruce A. Babcock, Chad E. Hart Nov 2006

The Long-Run Impact Of Corn-Based Ethanol On The Grain, Oilseed, And Livestock Sectors: A Preliminary Assessment, Amani E. Elobeid, Simla Tokgoz, Dermot J. Hayes, Bruce A. Babcock, Chad E. Hart

CARD Briefing Papers

The ongoing growth of corn-based ethanol production raises some fundamental questions about what impact continued growth will have on U.S. and world agriculture. Estimates of the long-run potential for ethanol production can be made by calculating the corn price at which the incentive to expand ethanol production disappears. Under current ethanol tax policy, if the prices of crude oil, natural gas, and distillers grains stay at current levels, then the break-even corn price is $4.05 per bushel. A multi-commodity, multi-country system of integrated commodity models is used to estimate the impacts if we ever get to $4.05 ...


An Analysis Of The Link Between Ethanol, Energy, And Crop Markets, Simla Tokgoz, Amani E. Elobeid Nov 2006

An Analysis Of The Link Between Ethanol, Energy, And Crop Markets, Simla Tokgoz, Amani E. Elobeid

CARD Working Papers

This study analyzes the impact of price shocks in three input and output markets critical to ethanol: gasoline, corn, and sugar. We investigate the impact of these shocks on ethanol and related agricultural markets in the United States and Brazil. We find that the composition of a country's vehicle fleet determines the direction of the response of ethanol consumption to changes in the gasoline price. We also find that a change in feedstock costs affects the profitability of ethanol producers and the domestic ethanol price. In Brazil, where two commodities compete for sugarcane, changes in the sugar market affect ...


Characterization Of Volatile Organic Compounds And Odors By In-Vivo Sampling Of Beef Cattle Rumen Gas, By Solid-Phase Microextraction, And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Jeremiah Davis, Yin-Cheung Lo, Hongwei Xin Nov 2006

Characterization Of Volatile Organic Compounds And Odors By In-Vivo Sampling Of Beef Cattle Rumen Gas, By Solid-Phase Microextraction, And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Jeremiah Davis, Yin-Cheung Lo, Hongwei Xin

Agricultural and Biosystems Engineering Publications

Volatile organic compounds (VOCs) and odors in cattle rumen gas have been characterized by in-vivo headspace sampling by solid-phase microextraction (SPME) and analysis by gas chromatography–mass spectrometry–olfactometry (GC–MS–O). A novel device enabling headspace SPME (HS-SPME) sampling through a cannula was designed, refined, and used to collect rumen gas samples from steers. A Carboxen–polydimethylsiloxane (PDMS) fiber (85 μm) was used for SPME sampling. Fifty VOCs from ten chemical groups were identified in the rumen headspace. The VOCs identified had a wide range of molecular weight (MW) (34 to 184), boiling point (−63.3 to 292 °C ...


Butterflies And Continuous Conservation Reserve Program Filter Strips: Landscape Considerations, Nicole M. Davros, Diane M. Debinski, Kathleen F. Reeder, William L. Hohman Nov 2006

Butterflies And Continuous Conservation Reserve Program Filter Strips: Landscape Considerations, Nicole M. Davros, Diane M. Debinski, Kathleen F. Reeder, William L. Hohman

Ecology, Evolution and Organismal Biology Publications

Filter strips or buffers are areas of grass or other perennial herbaceous vegetation established along waterways to remove contaminants and sediments from agricultural field runoff. In the heavily cultivated regions of the Midwestern United States, these buffer zones established under the Farm Bill provide important habitat for wildlife such as butterflies. The question of how the landscape context of these plantings influences their use has not been adequately researched. We used multiple regression and Akaike’s Information Criteria to determine how habitat width and several landscape-level factors (i.e., landscape composition [total herbaceous cover, amount of developed area, and amount ...


Analytical And Experimental Studies Of Properties Of Ethanol Coproduct-Filled Plastics, Robert Tatara, Andrew Otieno, Srikrishna Suraparaju, Kurt A. Rosentrater Oct 2006

Analytical And Experimental Studies Of Properties Of Ethanol Coproduct-Filled Plastics, Robert Tatara, Andrew Otieno, Srikrishna Suraparaju, Kurt A. Rosentrater

Kurt A. Rosentrater

As the renewable fuels industry continues to grow, the quantity of resulting byproducts has expanded in tandem. Currently, these materials are primarily used for animal feed, but at some point will saturate the animal feeds market. Thus, it is necessary to investigate alternative methods and applications by which these coproducts can be utilized. One potential application for these process residues involves plastics manufacturing. Due, in part, to the increasing cost of resins and conventional fillers, alternate fillers have been increasingly sought. Many of these include biological materials such as grasses, bamboo, starch, chicken feathers, soy protein, and cellulose. Not only ...


The Importance Of Emerging Biobased Industries To Engineering And Technology, Kurt A. Rosentrater, R. Balamuralikrishma Oct 2006

The Importance Of Emerging Biobased Industries To Engineering And Technology, Kurt A. Rosentrater, R. Balamuralikrishma

Kurt A. Rosentrater

Our society has developed an insatiable demand for energy and material goods. Historically, these needs have been met primarily by fossil fuels and other non-renewable raw materials. As environmental concerns grow, however, renewable resources are gaining increased attention. This paper examines the emergence and importance that biobased industries are increasingly beginning to play. A biobased enterprise, similar in concept to a traditional refinery or factory, utilizes conversion technologies to produce various products. These operations are rapidly increasing both in number as well as in capacity throughout this country, and are poised to add significantly to the nation’s energy and ...


Leopold Letter Fall 2006, Leopold Center For Sustainable Agriculture Oct 2006

Leopold Letter Fall 2006, Leopold Center For Sustainable Agriculture

Leopold Letter

Major grant continues Value Chain Partnerships project ; Stockpiling shows potentia for developing heifers ; Director column: What role in renewable energy debate? ; Kirschenmann column: Managing with less energy ; Project studies next generation of biorenewables ; Few dollars go to research for midsize farms ; local ownership boosts ethanol plant benefits on local economies ; A conversation with the Rosmanns, 2006 Spencer Award winners ; Workshop explores grazing as a land management tool for prairies ; New web-based tool targets Gulf Dead Zone


White-Tailed Deer Harvest From The Chronic Wasting Disease Eradication Zone In South-Central Wisconsin, Julie A. Blanchong, Damien O. Joly, Michael D. Samuel, Julia A. Langenberg, Robert E. Rolley, Janet F. Sausen Oct 2006

White-Tailed Deer Harvest From The Chronic Wasting Disease Eradication Zone In South-Central Wisconsin, Julie A. Blanchong, Damien O. Joly, Michael D. Samuel, Julia A. Langenberg, Robert E. Rolley, Janet F. Sausen

Natural Resource Ecology and Management Publications

Chronic wasting disease (CWD) was discovered in free-ranging white-tailed deer (Odocoileus virginianus) in south-central Wisconsin in 2002. The current control method for CWD in the state is the harvest of deer from affected areas to reduce population density and lower CWD transmission. We used spatial regression methods to identify factors associated with deer harvest across south-central Wisconsin. Harvest of deer by hunters was positively related to deer density (slope = 0.003, 95% C =0.0001-0.006), the number of landowners that requested harvest permits (slope = 0.071, 95% C/ = 0.037-0.105), and proximity to the area of highest CWD ...


Removal Of U.S. Ethanol Domestic And Trade Distortions: Impact On U.S. And Brazilian Ethanol Markets, Amani E. Elobeid, Simla Tokgoz Oct 2006

Removal Of U.S. Ethanol Domestic And Trade Distortions: Impact On U.S. And Brazilian Ethanol Markets, Amani E. Elobeid, Simla Tokgoz

CARD Working Papers

We analyze the impact of trade liberalization and removal of the federal tax credit in the United States on U.S. and Brazilian ethanol markets using a multi-market international ethanol model calibrated on 2005 market data and policies. The removal of trade distortions induces a 23.2 percent increase in the price of world ethanol on average between 2006 and 2015 relative to the baseline. The U.S. domestic ethanol price decreases by 14.1 percent, which results in a 7.5 percent decline in production and a 3.2 percent increase in consumption. The lower domestic price leads to ...


Evaluating The Conceptual Tools For Forest Biodiversity Conservation And Their Implementation In The U.S., Lisa A. Schulte, Robert J. Mitchell, Malcolm L. Hunter Jr., Jerry F. Franklin, R. Kevin Mcintyre, Brian J. Palik Aug 2006

Evaluating The Conceptual Tools For Forest Biodiversity Conservation And Their Implementation In The U.S., Lisa A. Schulte, Robert J. Mitchell, Malcolm L. Hunter Jr., Jerry F. Franklin, R. Kevin Mcintyre, Brian J. Palik

Natural Resource Ecology and Management Publications

While much has been written describing biodiversity, its global decline, and the need for action, the scientific underpinnings guiding conservation practice have received little attention. We surveyed 10 large-scale forest management plans in the U.S. to establish which ecological concepts are commonly used to guide forest biodiversity conservation and evaluate the relative importance of these concepts in processes related to forest stewardship. We then reviewed the scientific literature to assess the degree to which these concepts are founded in antecedent ecological theory, the extent to which they have been tested, and the limits of those tests. We found that ...


Optimal Design Of Permit Markets With An Ex Ante Pollution Target, Sergey S. Rabotyagov, Hongli Feng, Catherine L. Kling Aug 2006

Optimal Design Of Permit Markets With An Ex Ante Pollution Target, Sergey S. Rabotyagov, Hongli Feng, Catherine L. Kling

CARD Working Papers

In this paper, we examine the design of permit trading programs when the objective is to minimize the cost of achieving an ex ante pollution target, that is, one that is defined in expectation rather than an ex post deterministic value. We consider two potential sources of uncertainty, the presence of either of which can make our model appropriate: incomplete information on abatement costs and uncertain delivery coefficients. In such a setting, we find three distinct features that depart from the well-established results on permit trading: (1) the regulator’s information on firms’ abatement costs can matter; (2) the optimal ...


Climate Change Sensitivity Assessment On Upper Mississippi River Basin Streamflows Using Swat, Manoj K. Jha, Jeffrey G. Arnold, Philip W. Gassman, Filippo Giorgi, Roy R. Gu Aug 2006

Climate Change Sensitivity Assessment On Upper Mississippi River Basin Streamflows Using Swat, Manoj K. Jha, Jeffrey G. Arnold, Philip W. Gassman, Filippo Giorgi, Roy R. Gu

Civil, Construction and Environmental Engineering Publications

The Soil and Water Assessment Tool (SWAT) model was used to assess the effects of potential future climate change on the hydrology of the Upper Mississippi River Basin (UMRB). Calibration and validation of SWAT were performed using monthly stream flows for 1968–1987 and 1988–1997, respectively. The R2 and Nash-Sutcliffe simulation efficiency values computed for the monthly comparisons were 0.74 and 0.69 for the calibration period and 0.82 and 0.81 for the validation period. The effects of nine 30-year (1968 to 1997) sensitivity runs and six climate change scenarios were then analyzed, relative to ...


Leopold Letter Summer 2006, Leopold Center For Sustainable Agriculture Jul 2006

Leopold Letter Summer 2006, Leopold Center For Sustainable Agriculture

Leopold Letter

2006 Spencer Award goes to Rosmann family ; Field peas, pigs make good combination ; Director column: How do partnerships relate to our mission? ; Kirschenmann column: Agriculture needs a new ethic ; Does five-a-day pay for Iowans? ; Finding the right fit, support for ag entrepreneurs ; Four-year rotations offer promise at bottom line ; Projects involve students for education, outreach ; New report summarizes work on 21 projects


Partitioning Of E. Coli And Enterococci Between Planktonic And Sorbed Phases In Runoff From Pasturelands, Michelle L. Soupir, H. E. Saied Mostaghimi, Elizabeth F. Alphin Jul 2006

Partitioning Of E. Coli And Enterococci Between Planktonic And Sorbed Phases In Runoff From Pasturelands, Michelle L. Soupir, H. E. Saied Mostaghimi, Elizabeth F. Alphin

Michelle L. Soupir

Pathogens are the leading cause of surface water impairments in Virginia. Currently, Nonpoint Source (NPS) pollution models are most frequently used to determine the maximum allowable loading rates of bacteria from identified sources and they typically simulate bacterial transport to surface waters as a planktonic or free pollutant. Very few models attempt to partition between the planktonic and attached phases primarily because data on bacteria partitioning during overland flow events are currently not available. A field study was conducted to evaluate the partitioning of E. coli and enterococci between the planktonic and attached phases in runoff from pasturelands and to ...


Decision Support For Nitrogen Management In Tile-Drained Agriculture, Philip Heilman, Robert W. Malone, Liwang Ma, Jerry L. Hatfield, Lajpat R. Ahuja, J. Ayen, Kevin P. Boyle, Rameshwar S. Kanwar Jul 2006

Decision Support For Nitrogen Management In Tile-Drained Agriculture, Philip Heilman, Robert W. Malone, Liwang Ma, Jerry L. Hatfield, Lajpat R. Ahuja, J. Ayen, Kevin P. Boyle, Rameshwar S. Kanwar

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Farmers will adopt alternative management systems to improve water quality more readily if they understand how those management alternatives affect the release of contaminants, crop yields, and ultimately, their net income. We propose a method to address these issues by integrating observed data from field experiments, a comprehensive simulation model, review by local experts, and application through a decision support system by technically trained conservationists. An example for reducing nitrogen loading from tile-drained corn and soybean production in Iowa demonstrates the approach. Fourteen years of observed data from 30 research plots on the Northeast Research and Demonstration Farm near Nashua ...


The Global Relevance Of Bio-Based Industries To Engineering And Technology Education, Kurt A. Rosentrater, Radha Balamuralikrishma Jun 2006

The Global Relevance Of Bio-Based Industries To Engineering And Technology Education, Kurt A. Rosentrater, Radha Balamuralikrishma

Kurt A. Rosentrater

The society in which we live has developed an insatiable demand for energy and material goods. In particular, recent data reveals that the aggressive pursuit of improved standards of living in the highly populated countries of India and China has contributed to increased demand for fossil fuels, which has exacerbated the recent spike in energy costs. Historically, these needs have been met primarily by fossil fuels and other non-renewable raw materials. As environmental concerns grow, however, renewable resources are gaining increased attention. This paper examines the emergence and importance that bio-based industries are increasingly beginning to play. A bio-based enterprise ...


Biorefining Of Renewable Resources—Emerging Opportunities For Engineering Education, Kurt A. Rosentrater Jun 2006

Biorefining Of Renewable Resources—Emerging Opportunities For Engineering Education, Kurt A. Rosentrater

Kurt A. Rosentrater

The society in which we live has developed an insatiable demand for energy and material goods. Historically these needs have primarily been met by utilizing fossil fuels and other nonrenewable raw materials. As environmental concerns grow, however, renewable resources are gaining increased attention. This paper examines industrial biorefineries, which are at the leading edge of the development of emerging biobased industries. Biorefineries, similar in concept to traditional petroleum refineries, utilize various conversion technologies to produce multiple products, including fuels, chemicals, industrial products, and electrical power from renewable biomass sources, such as corn stover, residue straw, perennial grasses, legumes, and other ...


Off-Stream Water, Shade And Nutritional Supplementation To Modify Animal Behavior, James R. Russell, Matthew M. Haan, Daryl R. Strohbehn Jun 2006

Off-Stream Water, Shade And Nutritional Supplementation To Modify Animal Behavior, James R. Russell, Matthew M. Haan, Daryl R. Strohbehn

Agriculture and Environment Extension Publications

Another way to manage pasture water for positive water quality is to modify animal behavior. Find out about providing off-stream water, shade, and nutritional supplementation.


Welfare Maximization, Pricing, And Allocation With A Product Performance Or Environmental Quality Standard: Illustration For The Gasoline And Additives Market, Paul W. Gallagher, Hosein Shapouri, Jeffrey Price Jun 2006

Welfare Maximization, Pricing, And Allocation With A Product Performance Or Environmental Quality Standard: Illustration For The Gasoline And Additives Market, Paul W. Gallagher, Hosein Shapouri, Jeffrey Price

Economics Publications

Programming models approximate market prices and quantities when regulations constrain firm choices, because market outcomes result when welfare is appropriately defined and includes performance and environmental constraints. This study discusses market operation in quality-constrained sectors, like gasoline and additives; processors expand output until marginal processing cost equals the processing margin between product revenues and raw material costs; retailers who buy gasoline and additives from processors and sell blended retail gasoline price sales at a marginal cost that includes the blended input value plus adjustments for values of constrained attributes; and market supplies and demands of measurable attributes like octane are ...


Watershed Learning Activity: Coming To Terms With Geographic Scale, Tricia G. Knoot, Nancy Grudens-Schuck, Lisa A. Schulte Jun 2006

Watershed Learning Activity: Coming To Terms With Geographic Scale, Tricia G. Knoot, Nancy Grudens-Schuck, Lisa A. Schulte

Natural Resource Ecology and Management Publications

Want better dialogue in your watershed group? Proles may result from participants' misunderstanding of geographic scale. The Watershed Learning Activity can foster an understanding of the importance of geographic scale through group-based experiential learning that combines aerial photography and conceptual change theory. Try it at your next watershed meeting.


Groundwater-Supported Evapotranspiration Within Glaciated Watersheds Under Conditions Of Climate Change, Denis Cohen, Mark Person, Ronnie Daannen, Sharon Locke, Dave Dahlstrom, Victor Zabielski, Thomas C. Winter, Donald Rosenberry, Herb Wright, Emi Ito, John L. Nieber, William J. Gutowski Jr. Apr 2006

Groundwater-Supported Evapotranspiration Within Glaciated Watersheds Under Conditions Of Climate Change, Denis Cohen, Mark Person, Ronnie Daannen, Sharon Locke, Dave Dahlstrom, Victor Zabielski, Thomas C. Winter, Donald Rosenberry, Herb Wright, Emi Ito, John L. Nieber, William J. Gutowski Jr.

Geological and Atmospheric Sciences Publications

This paper analyzes the effects of geology and geomorphology on surface-water/-groundwater interactions, evapotranspiration, and recharge under conditions of long-term climatic change. Our analysis uses hydrologic data from the glaciated Crow Wing watershed in central Minnesota, USA, combined with a hydrologic model of transient coupled unsaturated/saturated flow (HYDRAT2D). Analysis of historical water-table (1970–1993) and lake-level (1924–2002) records indicates that larger amplitude and longer period fluctuations occur within the upland portions of watersheds due to the response of the aquifer system to relatively short-term climatic fluctuations. Under drought conditions, lake and water-table levels fell by as much as ...


Leopold Letter Spring 2006, Leopold Center For Sustainable Agriculture Apr 2006

Leopold Letter Spring 2006, Leopold Center For Sustainable Agriculture

Leopold Letter

Leopold Center funds 30 new projects for 2006 ; Research confirms link between extended crop rotations, soil quality ; Director column: What are your top priorities? ; Kirschenmann column: Aldo Leopold and 21st Century agriculture ; Burlington forum explores Leopold's Iowa roots ; Southwest Iowa Entrepreneurial Center ; New generation' producer finds new markets ; Advice from distributors: Tell us your story ; Workshop targets niche beef market opportunities ; ISU researchers advice Chinese hoop project ; Team completes external review of Leopold Center programs


Ethanol Blend: Ready For Prime Time?, Paul W. Gallagher Mar 2006

Ethanol Blend: Ready For Prime Time?, Paul W. Gallagher

Economics Publications

People and decision-makers know about the jobs benefit from the Midwest's growing ethanol industry. However, the possibility of relief from high gasoline prices is not as well-advertised. E85, an ethanol-based fuel substitute for gasoline has potential. But important aspects of the market situation have been excluded or described in a one-sided fashion.


Bridge Frost Prediction By Heat And Mass Transfer Methods, Tina M. Greenfield, Eugene S. Takle Mar 2006

Bridge Frost Prediction By Heat And Mass Transfer Methods, Tina M. Greenfield, Eugene S. Takle

Geological and Atmospheric Sciences Publications

Frost on roadways and bridges can present hazardous conditions to motorists, particularly when it occurs in patches or on bridges when adjacent roadways are clear of frost. To minimize materials costs, vehicle corrosion, and negative environmental impacts, frost-suppression chemicals should be applied only when, where, and in the appropriate amounts needed to maintain roadways in a safe condition for motorists. Accurate forecasts of frost onset times, frost intensity, and frost disappearance (e.g., melting or sublimation) are needed to help roadway maintenance personnel decide when, where, and how much frost-suppression chemical to use. A finite-difference algorithm (BridgeT) has been developed ...


Quantifying Relationships Between Bird And Butterfly Community Shifts And Environmental Change, Diane M. Debinski, Ron E. Vannimwegen, Mark E. Jakubauskas Feb 2006

Quantifying Relationships Between Bird And Butterfly Community Shifts And Environmental Change, Diane M. Debinski, Ron E. Vannimwegen, Mark E. Jakubauskas

Ecology, Evolution and Organismal Biology Publications

Quantifying the manner in which ecological communities respond during a time of decreasing precipitation is a first step in understanding how they will respond to longer-term climate change. Here we coupled analysis of interannual variability in remotely sensed data with analyses of bird and butterfly community changes in montane meadow communities of the Greater Yellowstone Ecosystem. Landsat satellite imagery was used to classify these meadows into six types along a hydrological gradient. The northern portion of the ecosystem, or Gallatin region, has smaller mean patch sizes separated by ridges of mountains, whereas the southern portion of the ecosystem, or Teton ...


Characterization Of Volatile Organic Compounds And Odorants Associated With Swine Barn Particulate Matter Using Solid-Phase Microextraction And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Yin-Cheung Lo, Steven J. Hoff Jan 2006

Characterization Of Volatile Organic Compounds And Odorants Associated With Swine Barn Particulate Matter Using Solid-Phase Microextraction And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Yin-Cheung Lo, Steven J. Hoff

Agricultural and Biosystems Engineering Publications

Swine operations can affect air quality by emissions of odor, volatile organic compounds (VOCs) and other gases, and particulate matter (PM). Particulate matter has been proposed to be an important pathway for carrying odor. However, little is known about the odor–VOCs–PM interactions. In this research, continuous PM sampling was conducted simultaneously with three collocated TEOM 1400a analyzers inside a 1000-head swine finish barn located in central Iowa. Each TEOM was fitted with total suspended particulate (TSP), PM-10, PM-2.5 and PM-1 preseparators. Used filters were stored in 40 mL vials and transported to the laboratory. VOCs adsorbed/absorbed ...