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ABOUT THE LIBRARY
The LUMCON Library collection was originally housed in Ellender Memorial Library, located at Nicholls State University in Thibodaux, Louisiana. After completion of the DeFelice Marine Center in 1986, the collection was moved to its present location. Since that time, the Library has become an active resource center for LUMCON faculty and staff as well as Consortium member institutions, visiting researchers, students, and the public.
The library contains a computer lab and several study spaces available to visiting students, scientists, or groups (such as attendees of a writing retreat).
The collection and development of library materials reflects LUMCON’s research programs. The collection has approximately:
- 4,600 monographs
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- 200 journal titles
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- 3,600 government documents
- 1,500 reprints
In addition, the library houses a complete collection of research products generated by DeFelice Marine Center personnel since LUMCON’s inception.
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INTERNSHIP PROGRAM
The LUMCON Library is available as an internship site for graduate-level students who have completed at least two semesters toward a Master’s degree in Library and Information Science. Applications will be accepted on a continuing basis and internships may be completed during any semester. Prior library experience or an undergraduate degree in science is desirable, but not necessary. Credits will be awarded based on the number of person-hours completed (40 person-hours per credit hour).
The internship will consist of both field experience, encompassing many operations of a special library, and a special project in technical services. The Librarian will give the intern an overview of reference services, technical services, library administration, and budgeting, and will guide the intern through special projects. The LUMCON Library uses SIRSI/Dynix’s Symphony Integrated Library System as well as OCLC for Cataloging/Interlibrary Loan services.
Contact the Librarian for more information or to apply for an internship.
ACKNOWLEDGMENTS
We would like to thank the following individuals for their guidance and input when creating the Dispersants Bibliography:
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- Victoria Broje, Per Daling, Alun Lewis, and Francois-Xavier Merlin offered valuable assistance in the early phases of this project. Per Daling’s support was especially noteworthy, by providing conference proceedings that otherwise could not be obtained.
- Deborah Ansell, ITOPF’s librarian, contributed by sharing her sizeable list of library holdings on dispersant publications with us, and filling in gaps where existing citation information was incomplete.
- Likewise, Julie Anne Richardson, librarian for Environment Canada, compiled a publication listing on dispersants housed in her collection, which provided us with additional citations for our project.
- Qianxin Lin at Louisiana State University provided API conference proceedings for us to use in transcribing abstracts.
- Nancy Kinner at the Coastal Response Research Center provided encouragement, focus, and connected us with some of the aforementioned people.
- Finally, Don Davis and Karen Reeder Emory at OSRADP deserve special mention for all of their help and direction during the span of this project.
The LUMCON Library is a member of the International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC), the Southeast Affiliate of IAMSLIC Libraries (SAIL), and the Louisiana Library Network and Information Consortium (LOUIS). Additionally, the Library has access to OCLC Cataloging/Interlibrary loan services.
Click here to search LUMCON’s e-Library catalog using the LOUIS portal.
DISPERSANTS BIBLIOGRAPHY
Emulsifier treatment, burning, and cutting have been experimentally investigated as possible cleaning methods for oiled salt-marsh vegetation [Spartina and Puccinellia]. The results given show that none of these methods decrease the damage due to the oil, and they may increase it. In general it is, therefore, best to leave oiled salt marsh to recover naturally
Field experiments were carried out to compare the littoral fate and ecological effects of chemically dispersed oil and nondispersed oil. The basic experimental design was a series of treatments applied to marked plots on rocky shores, a salt marsh, an intertidal sea-grass bed, and sand and mud flats. The treatments included a variety of oils and the dispersants BP 1100 WD, BP 1100X, Corexit® 8667, and Corexit 7664, applied directly to the intertidal plots. Results from treatments on intertidal rock suggested that oil deposition or oil deposition followed by dispersant cleaning had a greater effect than dispersant cleaning alone on limpets (Patella spp.) and small winkles (Littorina spp.). On the salt marsh, oil or oil followed by dispersant cleaning significantly reduced the density of the perennial grass Spartina anglica C.E. Hubbard and the annual plant Salicornia spp. Dispersant alone had relatively little effect on the vegetation. On the sea-grass bed, although variability was high, all treatments reduced the percentage cover of the sea-grass Zostera noltii Hornem. Sediment hydrocarbon analysis indicated little long-term retention of applied oil (whether dispersant treated or not) in the salt marsh mud and in muddy sand on a waterlogged intertidal flat. However, in the sea-grass bed sediments and in the fine sands on freely draining intertidal flats, dispersant-treated oil was, in some cases, retained at greater concentrations than untreated oil. The results are discussed with reference to the rocky shore Exposure Scale of Ballantine, to the shoreline Vulnerability Index of Gundlach and Hayes, and to factors such as the behavior of the water table, particle size, and depth of disturbance of sediments
The acute and sublethal effects of a dispersant and crude oil on anisomotic and isosmotic regulation in flounder have been tested. Flounder were exposed to different concentrations of Corexit 9527 and crude oil by use of a biotest system. Fourteen days' exposure to 20 ppm of Corexit 9527, alone or in a 1:1 mixture with crude oil, had no effect on the blood parameters. On the other hand, 96 hours' exposure to 80 ppm of the same compounds led to 50% mortality and significant effects on the blood parameters in surviving fish. The comparability between effects obtained in fish exposed to lethal and sublethal concentrations of toxicants, respectively, is discussed
Research was conducted using 14 dispersants to determine toxicity to Carassius auratus in both freshwater and saltwater experiments. The least toxic of the dispersants were Esso Corexit 8666 and 7664, followed by Finasol OSR/2 and SC
A multidisciplinary long-term field experiment was conducted to evaluate the use of chemical dispersants as a means of reducing adverse environmental effects of oil spills in nearshore, tropical waters. Three study sites whose intertidal and subtidal components consisted of mangroves, seagrass beds, and coral reefs were studied in detail before, during, and after exposure to untreated crude oil or chemically dispersed oil. This study was intended to simulate an unusually high, worst-case exposure level of dispersed oil and a moderate exposure level of untreated oil. The third site served as an untreated reference site. Assessments were made of the distribution and extent of contamination by hydrocarbons over time, and the short-term and long-term effects on survival, abundance, and growth of the dominant flora and fauna of each habitat. The whole, untreated oil had severe, long-term effects on survival of mangroves and associated fauna and relatively minor effects on seagrasses, corals and associated organisms. Chemically dispersed oil caused declines in the abundance of corals, sea urchins, and other reef organisms; reduced coral growth rate in one species; and had minor or no effects on sea grasses and mangroves. Conclusions were drawn from these results with respect to decision making at the site of the actual spills based upon trade-offs on the consequences of dispersing or not dispersing the oil
A multidisciplinary long-term field experiment was conducted to evaluate the use of chemical dispersants to reduce the adverse environmental effects of oil spills in nearshore, tropical waters. Three study sites, whose intertidal and subtidal components consisted of mangroves, seagrass beds, and coral reefs, were studied in detail before, during, and after exposure to untreated crude oil or chemically dispersed oil. This study simulated an unusually high ("worst case") exposure level of dispersed oil and a moderate exposure level of untreated oil. The third site served as an untreated reference site. Assessments were made of the distribution and extent of contamination by hydrocarbons over time, and the short- and long-term effects on survival, abundance, and growth of the dominant flora and fauna of each habitat. The whole, untreated oil had severe, long-term effects on survival of mangroves and associated fauna, and relatively minor effects on seagrasses, corals, and associated organisms. Chemically dispersed oil caused declines in the abundance of corals, sea urchins, and other reef organisms, reduced coral growth rate in one species, and had minor or no effects on seagrasses and mangroves. Conclusions were drawn from these results on decision making for actual spills based on trade-offs between dispersing or not dispersing the oil. This report deals only with the major results of the study. A large number of parameters were monitored, but in the interest of brevity only the most important aspects of the study are reported here. A detailed description of the methods used and a complete presentation and discussion of results is given in Ballou et al
An agricultural forced-air spray gun was modified to apply dispersant from the deck of a ship at sea. Under no-wind conditions, this sprayer had a range of up to 30 meters; with the wind behind it, dispersant could be applied over a slick area up to 60 meters from the ship. Further development will involve testing in actual spill conditions by one of the subsidiaries of the Elf Aquitaine Group
Details are given of an experiment conducted using the brown shrimp (Crangon crangon) in toxicity tests with Noramium DA50, in order to determine the toxicity of chemically dispersed oil. Closed and flow-through systems used showed similar toxicities; the size of oil droplet appeared to be a determining factor in toxicity as mortality was observed to be greater with small diameter droplets
Since it is desirable to minimize the area covered by oil spilled on water, and since all oil recovery devices operate more efficiently on thicker oil layers, there is much interest in chemicals which can slow the spreading of oil or even drive the oil back into a thicker layer after it has already spread. 47 commercially available chemicals capable of controlling oil were examined in the lab during 1971 to determine which were practical oil collecting agents. A series of screening tests was developed, based upon physical properties and surface-chemical properties. The materials judged to be most useful by these tests are presently being evaluated in multicomponent field tests of oil recovery equipment. Both lab and field tests have indicated that such materials can aid in cleaning up spilled oil
The Southern California Oil Spill Test Program is described in detail and operational aspects of the program are discussed. The report states that vessel application of chemical dispersants is an effective method of delivery, and that aircraft is even more effective in terms of area coverage and response time from notification of spill. Four dispersant spraying methods were found to be practical means of application at sea
SMART (Scientific Monitoring of Advanced Response Technologies) is a new monitoring program designed to provide the Unified Command with real-time field data when in situ burning and dispersants are used during oil spill response. For dispersant monitoring, SMART recommends a three-tiered approach. Tier I has visual observation by trained observers from vessels or from aerial platforms. Tier II combines visual observations with water-column sampling using a fluorometer at a single depth. Tier III expands the fluorometry monitoring to several water depths, and uses a water-quality lab. Water samples for later analysis and correlation of fluorometry readings are taken both in Tier II and Tier III. For in situ burning, SMART recommends deploying three or more monitoring teams, each equipped with a real-time particulate monitor with data-logging capability. The teams deploy downwind of the burn at sensitive locations, and report particulate concentration trends to the United Command
Emulsions of Venezuelan crude oil and the dispersant, Oilsperse 43, in both unweathered and artificially weathered forms, increased the coughing rate of post smolt Atlantic salmon (S. salar L.) in fresh water at sublethal concentrations ranging from 0.01 to 0.7 toxic units in 12-h tests. Coughing rates increased significantly in what appeared to be a concentration- and time-related basis while respiration rates declined at the higher sublethal levels. At most concentrations tested, there were no significant differences between the physiological responses in either unweathered or artificially weathered emulsions
Larvae of pacific herring (Clupea pallasi) were used to study the photoenhanced toxicity of North Slope crude oil alone or in the presence of Corexit® 9527. Dispersant and oil had similar toxicities as oil alone when tested in control and with UVA treatments. However, exposure to sunlight created significant levels of increased toxicity. Corexit® sped up the dissolution of PAHs into the aqueous phase, which accelerated toxicity of the material. 96 h no-observed-efect concentrations in UVA treatments were 0.2 μg/L tPAH, while sunlight treatments were 0.01 μg/g tPAH
The aquatic organism toxicity testing protocols developed by the Chemical Response to Oil Spills: Ecological Research Forum (CROSERF) were evaluated for applicability to assessing chemical dispersant toxicity under subarctic conditions. CROSERF participants developed aquatic toxicity testing protocols with the foremost objective of standardizing test methods and reducing inter-laboratory variability. A number of refinements are recommended to adapt the CROSERF protocols for testing with subarctic species under conditions of expected longer oil persistence. Recommended refinements of the CROSERF protocols include testing fresh and moderately weathered oil under conditions of moderate mixing energy, preparing toxicity test solutions using variable dilutions rather than variable loading, performing tests with subarctic species using static exposures in open chambers, increasing the duration of tests from 4 to 7 days, quantifying approximately 40 PAHs and their alkyl homologs, assessing the potential for photoenhanced toxicity, and incorporating a bioaccumulation endpoint by measuring tissue concentrations of PAHs. Refinements in the preparation of oil dosing solutions, exposure and light regimes, and analytical chemistry should increase the utility of the test results for interpreting the toxicity of chemically dispersed oil and making risk management decisions regarding dispersant use under subarctic conditions
A cost effectiveness analysis was performed for equipment, materials, and techniques for removal of spilled petroleum products from the surface of port and harbor waters used by US Naval craft. Effectiveness criteria, formulated for present methods and presently available equipment and materials, included speed of application, completeness of removal, ease of operation, effect on marine life, operating continuity, and availability. Parameters for the effectiveness study were based on the petroleum products now in use or those planned for future use and a detailed review of the geographic, hydrographic, physical, and environmental characteristics of ports used by the US Navy. The two most cost-effective systems for broad application were found to be mechanical recovery of spilled material by surface suction devices, supplemented by mechanical containment, and the application of chemical dispersants by pier or vessel-mounted high pressure spray equipment
A dispersing agent, Shell SD LTX, was found to be highly toxic to Nerita (Melanerita) atramentosa melanotragus when applied in combination with Maui Condensate. The agent was not found to produce significant mortality in the mollusc when applied in the absence of the crude oil. However, sublethal effects were identified, including large reductions in weight, changes in gonad tissue structure, and fertility
Intrinsic rhythmic activity of Nerita (Melanerita) atramentosa melanotragus was assessed under constant laboratory conditions. Activity proved to be a sensitive indicator of toxicity, and was affected by low levels of a relatively new oil dispersing agent, Shell SD LTX. How the state of activity influenced animal sensitivity to Shell SD LTX and to an oil, Maui Condensate, was investigated using short-term recovery experiments. Nerita were most sensitive during their active phase, and results during this period differed significantly from tests carried out during the inactive phase of the animal. Dispersant/oil mixture proved to be highly toxic. These findings have ecological implications and permit comment relating to the design of sublethal toxicity tests. These subjects are discussed
This paper describes the state-of-the-art approaches to dealing with the two major types of open-water pollution incidents encountered in bad weather — a tanker stranding where the oil is still contained within the tanks, and an actual spillage from a damaged tanker or fixed source. In the stranding case, the cargo off-loading approach is compared with cargo jettisoning (pumping part of the cargo overboard) and stabilization approaches. In the spillage case, the basic approaches that are feasible are skimming and the use of dispersants. The advantages of each are discussed. Systems including large containment barriers are estimated to be less effective than direct-acting skimmers because of the operational control problems in high sea states. Effective direct-acting skimmers are not in wide-spread use at present, although several systems are under development. Dispersant systems are estimated to have the highest sea-state operating capability, particularly aircraft-application systems, which could be effective in conditions up to where a slick is rapidly dispersed through natural wave turbulence
The Exxon Dispersant Effectiveness Test, EXDET, was developed to address certain concerns associated with currently available laboratory dispersant effectiveness test procedures. The EXDET procedure discussed is a modification of the Labofina/WSL test methods which have been recognized as standards for evaluation of dispersants in laboratory simulations. Modifications which have been incorporated in the EXDET procedure are: 1) an improved agitation method, 2) an enhanced sample collection, 3) a mass balance capability for dispersed/undispersed oil, 4) a technique for better interlab correlation, and 5) a better oil/water ratio. This procedure uses standard laboratory equipment and small volumes of water, oil, and chemical dispersant. The procedure can handle four replicates per test set. Four sets (16 data points) can easily be conducted per day, leading to sufficient data for effective statistical analysis
A new dispersant effectiveness test, named EXDET, was developed to address certain concerns associated with currently available laboratory dispersant effectiveness test procedures. This new procedure uses standard laboratory equipment (such as a Burrell Wrist-Action shaker) and small volumes of water, oil, and chemical dispersant. Other features include the capabilities to mass balance the dispersed and non-dispersed oil, and to generate replicate data for statistical analysis. Details of the new procedure are presented and data at various test conditions illustrate features of the laboratory test method. Variables, such as dispersant/oil ratio, dispersant addition method, water salinity and oil/water ratio can readily be investigated for various crude oils and dispersants with the new method
Several oil spill dispersants available since 1975 have successfully dispersed spills of light to medium oils. However, they generally have performed poorly on heavily weathered oil, low gravity viscous oils, waxy crudes, “chocolate mousse” emulsions, and any oil spilled in cold environments. Some also were not formulated for use on waters of low salinity. In many cases involving spills of low viscosity oils, the decision to use chemical treatment has been delayed until the oil is in a weathered state. Chemical treatment under any of these conditions requires that the active surfactants reach the oil/water interface with the aid of a penetrating hydrocarbon solvent. Such formulations lose effectiveness when diluted with water (as in boat spraying) and usually must be used undiluted at a high dosage. They also often are too low in viscosity and density to be sprayed efficiently by aircraft. This paper discusses the properties and performance of formulations which avoid the above oil viscosity and water salinity problems and offer, for the first time, opportunity for widespread chemical treatment of such spills by aerial spray from large aircraft
Four marine dispersant concentrates and two freshwater dispersant concentrates were tested in the laboratory for effectiveness in zero to average salinity using two different test oils. The data show that the comparative laboratory effectiveness for all the dispersants tested is lower at zero salinity, but that the variation in effectiveness as the salinity increases is different for each dispersant. Another part of the study compares the effectiveness of one marine dispersant and two freshwater dispersants in different electrolyte solutions. It is shown that effectiveness behavior in calcium and magnesium salt solutions is markedly different from that in sodium salt solutions. The results suggest that any future test protocol for dispersant effectiveness in fresh waters should take into account the detailed composition of the water in question
The procedure is described for a toxicity test of an oil dispersant (Dispolene 325) using fish (Mugil ramada, Atherina hepsetus and Aphanius fasciatus) and molluscs (Mytilus galloprovincialis and Tapes decussates). Findings show the dispersant to be very toxic even at low concentrations; the most resistant species shows a complete mortality in a few minutes
The use of chemicals for oil spill dispersal, while not presently widespread in the U.S., would have implications for the U.S. Coast Guard's Marine Environmental Protection program. This report explores the logistics of oil dispersant application by the U.S. Coast Guard. Data were reviewed for the 13 dispersants for which data had been submitted to the EPA as of October 1979. Manufacturer's data and published test results were also examined and information summarized with regard to classification, handling and storage application, availability and cost
Three studies, funded by the Environmental Studies Revolving Funds to investigate the effectiveness of chemical dispersants on oil, are reviewed. Each study employed large-scale laboratory testing which were conducted in an Ottawa facility. One study concentrated on the value of repeat applications of chemical dispersants on oil. A second study dealt with the development of using high pressure water mixing for dispersant application by boat. The third study focused on effectiveness testing of dispersants in a meso-scale laboratory
This paper discusses a project funded by Canada's Environmental Studies Revolving Fund to assess the potential of high-pressure water jets in assisting the chemical dispersion of oil at sea. Full-scale laboratory tests were conducted using 0.5-mm thick, fresh Alberta Sweet Mixed Blend crude oil treated with Corexit 9527 dispersant applied from an overhead spray boom at a dispersant-to-oil ratio of 1: 100. The effects on dispersion efficiency of mixing jet pressure, mixing jet flow rate, jet standoff distance, and vessel speed were evaluated. Based on the test results, specifications for a practical high-pressure water jet system have been suggested. The system would operate with a nozzle pressure of 7,000 kPa, a flow rate of 55 L/min per nozzle, and nozzles positioned about 0.6 m from the water surface. In laboratory tests such a system was capable of dispersing 80 to 100 percent of the surface slick, whereas similar tests with the well-known Warren Spring Laboratory breaker board system resulted in only a 10 percent dispersion
A foam application nozzle produced by Wormald Fire Systems was tested for use in dispersant application at sea. Although tests found that the nozzle did not produce a spray pattern suitable for dispersant application, researchers felt that it could be used in a neat spray application. The spray reach of the nozzle exceeded that of spray boom systems
Corexit 9527 and 9500 were used in large-scale laboratory tests to determine their effectiveness on Alaska North Slope crude oil when applied either neat or when diluted with salt water. Corexit 9527 was successful when diluted in water at a ratio of 1:10. However, the effectiveness of Corexit 9500 was reduced to either 1:10 or 3:10 dilutions. Because of this, researchers believe that Corexit 9500 should be applied by single-nozzle spray systems in neat form to avoid reduced effectiveness
Mesoscale testing was undertaken with Corexit 9500 on Hibernia crude in cold winter conditions. Results indicate that chemical dispersion would be effective on Hibernia in cold conditions until the crude had evaporated to about 9-10% in volume. After this, the oil begins to solidify, making dispersion extremely difficult
This database consists of citations found in journals, conference proceedings, government reports and gray literature covering over 40 years of published research on oil spill dispersants. Citations were collected from 1960 through June 2008. This bibliography was compiled and edited by John Conover, Associate Librarian at LUMCON, and funded by a grant from the Louisiana Applied and Educational Oil Spill Research and Development Program (OSRADP).
EFFECTS OF OFFSHORE OIL AND GAS DEVELOPMENT BIBLIOGRAPHY
Quarterly Issues
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Compilations
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- Biology
- Ecological, anatomical, and physiological effects of oil and/or gas, Species as biomarkers, PAH uptake and bioaccumulation, etc.
- Chemistry/Geochemistry/Geology
- Biochemistry, Biodegradation, Bioremediation, Hydrocarbon degradation, Environmental sampling, Soil contamination, etc.
- Engineering/Physics
- Technological advancements in facility/equipment design and use, Spill response and recovery equipment, Physical properties of oil and gas, etc.
- Environment/Ecosystem Management/Spills
- Environmental assessment and management, Oil and/or gas spill description and analysis, etc.
- Socioeconomic/Regulation/General
- Social and economic ramifications, Politics, Governmental policy and legislation, Organizational policy, General interest, etc.
This bibliography is a quarterly compilation of current publications (citations with abstracts) from a wide variety of electronic and print information sources relating to offshore oil and gas development. It is compiled and edited by John Conover, Associate Librarian at LUMCON. Items listed may or may not be available at the LUMCON Library. Items without annotations were unavailable for perusal prior to publication.
All questions about using library facilities, locating library resources, or searching LUMCON catalogs should be directed to the Librarian.