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Polonium

Description: From foreword: This is a report on the efforts of Monsanto Chemical Co. to solve some of the chemical problems involved in the atomic energy program.
Date: July 1956
Creator: Moyer, Harvey Vernon; Gnagey, Lloyd B. & Rogers, Adrian J.
Partner: UNT Libraries Government Documents Department

A Review of the Utilization of Fission Fragment Energy for the Fixation of Nitrogen

Description: Report issued by the Brookhaven National Laboratory discussing methods of nitrogen fixation, and their economic impacts. As stated in the introduction, "studies are described on circulating dust fuels, as well as fixed plated, porous bed, and other types of fuels as the basis for chemo-nuclear reactor designs, and the various fuel systems are compared on a technical and economic basis" (p. 3). This report includes tables, and illustrations.
Date: January 17, 1961
Creator: Steinberg, Meyer; Powell, J. R. & Green, Leon
Partner: UNT Libraries Government Documents Department

Agriculture Biotechnology: Background and Recent Issues

Description: This report discusses issues regarding the impacts of GE crops on the environment and food safety, and whether GE foods should be specially labeled. Underlying these issues is the question of whether U.S. regulation and oversight of biotechnology—with responsibilities spread primarily among the U.S.
Date: February 13, 2009
Creator: Cowan, Tadlock & Becker, Geoffrey S.
Partner: UNT Libraries Government Documents Department

Regulation of Fertilizers: Ammonium Nitrate and Anhydrous Ammonia

Description: This report focuses on some of the federal regulatory programs overseeing storage of ammonium nitrate and anhydrous ammonia by retailers. It discusses federal occupational safety, environmental, and security statutes and regulations applicable to each chemical. Select policy issues regarding these federal regulatory programs will be highlighted.
Date: May 14, 2013
Creator: Shea, Dana A.; Schierow, Linda-Jo & Szymendera, Scott D.
Partner: UNT Libraries Government Documents Department

Regulation of Fertilizers: Ammonium Nitrate and Anhydrous Ammonia

Description: This report focuses on some of the federal regulatory programs overseeing storage of ammonium nitrate and anhydrous ammonia by retailers. It discusses federal occupational safety, environmental, and security statutes and regulations applicable to each chemical. Select policy issues regarding these federal regulatory programs will be highlighted.
Date: May 9, 2013
Creator: Shea, Dana A.; Schierow, Linda-Jo & Szymendera, Scott D.
Partner: UNT Libraries Government Documents Department

The Chemical Thermodynamic Properties of Hydrocarbons and Related Substances: Properties of 100 Linear Alkane Thiols, Sulfides, and Symmetrical Disulfides in the Ideal Gas State from 0° to 1,000° K

Description: Report describing the chemical thermodynamic properties of 100 linear alkane thiols, sulfides, and symmetrical disulfides in their ideal gas state. Comprehensive tables of basic data are provided.
Date: 1961
Creator: Scott, Donald W. & McCullough, John P.
Partner: UNT Libraries Government Documents Department

Analytical Methodologies for Detection of Gamma-Valerolactone, Delta-Valerolactone, Acephate and Azinphos Methyl and Their Associated Metabolites in Complex Biological Matrices

Description: Non-invasive biomonitoring for chemicals of interest in law enforcement and similar monitoring of pesticides, together with their metabolites, can not only save money but can lead to faster medical attention for individuals exposed to these chemicals. This study describes methods developed for the analysis of gamma-valerolactone (GVL), delta-valerolactone (DVL), acephate, and azinphos methyl in saliva and serum. Liquid chromatography/mass spectrometry (LC/MS) operated in the negative and positive ion mode and gas chromatography/mass spectrometry (GC/MS) were used to analyze GVL and DVL. Although both analytical techniques worked well, lower detection limits were obtained with GC/MS. The lactones and their corresponding sodium salts were spiked into both saliva and serum. The lactones were isolated from saliva or serum using newly developed extraction techniques and then subsequently analyzed using GC/MS. The sodium salts of the lactones are nonvolatile and require derivatization prior to analysis by this method. N-methyl-N-(t-butyldimethylsilyl)-trifluoroacetamide (MTBSTFA) was ultimately selected as the reagent for derivatization because the acidic conditions required for reactions with diazomethane caused the salts to undergo intramolecular cyclization to the corresponding lactones. In vitro studies were conducted using rat liver microsomes to determine other metabolites associated with these compounds. Azinphos methyl and acephate are classified as organophosphate pesticides, and are known to be cholinesterase inhibitors in humans and insects, causing neurotoxicity. For this reason they have both exposure and environmental impact implications. These compounds were spiked into serum and saliva and prepared for analysis by GC/MS. Continuation of this research would include analysis by GC/MS under positive ion mode to determine the parent ions of the unknown metabolites. Further research is planned through an in vivo analysis of the lactones and pesticides. These methodologies could be extended for further analysis of other similar compounds.
Date: January 1, 2005
Creator: Zink, Erica; Clark, Ryan; Grant, Karen; Campbell, James & Hoppe, Erik
Partner: UNT Libraries Government Documents Department

The Preparation and Properties of Distilled Yttrium

Description: From abstract: "Distillation procedures used for purifying yttrium metal, producing metal containing less than 150 ppm oxygen and lower concentrations of most of the other common impurities, are discussed. Some of the physical and mechanical properties of the distilled yttrium indicate: (1) a melting point of 1510°C, (2) a solid state transformation at 1459°C obtained from high temperature resistivity data, (3) a Rockwell H hardness of 60 and (4) improved rolling and swagging characteristics."
Date: July 27, 1962
Creator: Habermann, C. E. & Daane, A. H. (Adrian Hill), 1919-
Partner: UNT Libraries Government Documents Department

Statistical methods for environmental pollution monitoring

Description: The application of statistics to environmental pollution monitoring studies requires a knowledge of statistical analysis methods particularly well suited to pollution data. This book fills that need by providing sampling plans, statistical tests, parameter estimation procedure techniques, and references to pertinent publications. Most of the statistical techniques are relatively simple, and examples, exercises, and case studies are provided to illustrate procedures. The book is logically divided into three parts. Chapters 1, 2, and 3 are introductory chapters. Chapters 4 through 10 discuss field sampling designs and Chapters 11 through 18 deal with a broad range of statistical analysis procedures. Some statistical techniques given here are not commonly seen in statistics book. For example, see methods for handling correlated data (Sections 4.5 and 11.12), for detecting hot spots (Chapter 10), and for estimating a confidence interval for the mean of a lognormal distribution (Section 13.2). Also, Appendix B lists a computer code that estimates and tests for trends over time at one or more monitoring stations using nonparametric methods (Chapters 16 and 17). Unfortunately, some important topics could not be included because of their complexity and the need to limit the length of the book. For example, only brief mention could be made of time series analysis using Box-Jenkins methods and of kriging techniques for estimating spatial and spatial-time patterns of pollution, although multiple references on these topics are provided. Also, no discussion of methods for assessing risks from environmental pollution could be included.
Date: 1987~
Creator: Gilbert, R. O.
Partner: UNT Libraries Government Documents Department

The Emergency Planning and Community Right-to-Know Act (EPCRA): A Summary

Description: This report summarizes the Emergency Planning and Community Right-to-Know Act (EPCRA) and the major regulatory programs that mandate reporting by industrial facilities of releases of hazardous chemicals to the environment, as well as local planning to respond in the event of significant, accidental releases.
Date: February 2, 2010
Creator: Schierow, Linda-Jo
Partner: UNT Libraries Government Documents Department

Effects of Water Source, Suspended Solids, and Acclimation on Biotransformation of 2 /4-Dichlorophenoxy Acetic Acid in Aquatic Systems

Description: In recent years there has been a great deal of scientific interest in processes that affect the fate of organic chemicals in the environment. one main reason for this increased interest is due to greater environmental concern over accidental or purposeful release of these chemicals into the environment by man. A major environmental concern is the increased use of pesticides over the last few years. In the thirty years prior to 1978 the use of pesticides has increased by a factor of forty (Ridgeway et al., 1978). Recently the use of herbicides has been increasing, but that of insecticides has stabilized (Willis, 1983). Detectable amounts of organic pesticides can be found in many areas of the biosphere. For toxic organic chemicals to be used safely, researchers must have a clear understanding of the fate and persistence of these chemicals when they are released into the environment. This understanding will also allow the development of new products that, when properly used, will not produce adverse effects to man or the environment (Weber, 1972). According to the Toxic Substance Control Act (TSCA) any new or expanded-use chemical that might be released into the environment must be tested for environmental hazard.
Date: August 1985
Creator: Moses, Christopher K. (Christopher Karam)
Partner: UNT Libraries

Bisphenol A (BPA) in Plastics and Possible Human Health Effects

Description: This report discusses Bisphenol A (BPA). BPA is used to produce certain types of plastic that are used in thousands of formulations for myriad products. Containers made with these plastics may expose people to small amounts of BPA in food and water. Medical devices and other more ubiquitous products, such as thermal paper coatings, also may contribute significantly to human exposure. Some animal experiments have found that fetal and infant development may be harmed by small amounts of BPA, but scientists disagree about the value of the animal studies for predicting harmful effects in people.
Date: August 13, 2010
Creator: Schierow, Linda-Jo & Lister, Sarah A.
Partner: UNT Libraries Government Documents Department

The Emergency Planning and Community Right-to-Know Act (EPCRA): A Summary

Description: This report summarizes the Emergency Planning and Community Right-to-Know Act (EPCRA) and the major regulatory programs that mandate reporting by industrial facilities of releases of hazardous chemicals to the environment, as well as local planning to respond in the event of significant, accidental releases.
Date: March 4, 2009
Creator: Schierow, Linda-Jo
Partner: UNT Libraries Government Documents Department

Brainstem Lipids' Relationship to Death

Description: Previous work relating postmortem findings with cause of death have focused on the vitreous portion of the body. This research investigated the link between phospholipids in the brainstem and cause of death. The lipids were extracted by the Folch extraction method and then separated by High Performance Thin Layer Chromatography. These techniques gave excellent separation and resolution. Results showed no link between cause of death and the type of lipids found in the brainstem after death.
Date: December 1982
Creator: Schrynemeeckers, Patrick J.
Partner: UNT Libraries