Download or read book Metabolism of Perchloroethylene and 1 1 1 2 Tetrachloroethane After Carbon Tetrachloride Pretreatment in B6C3F1 Mice written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Risk assessments for chlorinated solvents are typically only done for single chemicals, and clean up costs are based on these assessments. However, groundwater and drinking water supplies are usually contaminated with multiple compounds. The most commonly used approach for assessing risks to multiple chemical exposures assumes additivity of response. This study investigates the effect of exposure to mixtures of carbon tetrachloride and 2 other chlorinated solvents, perchloroethylene and 1,1,1,2-tetrachloroethane. Metabolite formation, which is the process thought to be responsible for toxicity is affect carbon tetrachloride. By understanding the alteration in metabolic outcome for perchlorethylene and 1,1,1,2-tetrachloroethane the assessment of risk associated with exposures to these types of mixtures may be more science-based.
Download or read book Sequential Transformation of Carbon Tetrachloride Perchloroethylene and 1 1 1 Trichloroethane Using Methanogenic and Methanotrophic Conditions written by Sarah Jane Christ and published by . This book was released on 1996 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: A methanogenic-methanotrophic system has been established to assess the capability of sequential treatment to transform the chlorinated aliphatics perchloroethylene (PCE), carbon tetrachloride (CT) and 1,1,1-trichloroethane (1, 1,1-TCA). Experiments compared the transformation of PCE alone and in a mixture of the target compounds. A comparison of acetate and iron as electron donors was also made. Data from the anaerobic systems have shown that PCE transformation is inhibited when in a mixture with CT and 1,1,1-TCA compared to when it is fed alone. When iron is the electron donor, PCE and 1,1,1-TCA are transformed without an acclimation period. CT was completely transformed regardless of the electron donor used. The acetate-fed system required approximately 60 days to acclimate to 1,1,1-TCA and 70 days for acclimation to PCE. Although the sequential system has been constructed, sampling from the aerobic column was not done before the thesis project ended. More investigation is required to determine the ability of the sequential system to degrade PCE, CT, and 1,1,1- TCA.
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1989 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WHO Guidelines for Indoor Air Quality written by and published by World Health Organization. This book was released on 2010 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents WHO guidelines for the protection of public health from risks due to a number of chemicals commonly present in indoor air. The substances considered in this review, i.e. benzene, carbon monoxide, formaldehyde, naphthalene, nitrogen dioxide, polycyclic aromatic hydrocarbons (especially benzo[a]pyrene), radon, trichloroethylene and tetrachloroethylene, have indoor sources, are known in respect of their hazardousness to health and are often found indoors in concentrations of health concern. The guidelines are targeted at public health professionals involved in preventing health risks of environmental exposures, as well as specialists and authorities involved in the design and use of buildings, indoor materials and products. They provide a scientific basis for legally enforceable standards.
Download or read book Toxicological Profile for Trichloroethylene written by and published by . This book was released on 1997 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicological Profile for Tetrachloroethylene written by and published by . This book was released on 1997 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemistry and Analysis of Volatile Organic Compounds in the Environment written by H.J. Bloemen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in the occurrence and behaviour of volatile organic compounds (VOCs) is increasing due to their adverse effects on the environment and human health. It is essential that information is made available on the various aspects of research on VOCs to enable better understanding and control of the various environmental and human health threats. The information in this book will be used to improve communication and understanding of the various approaches. In particular the potential and limitations of the described analytical methods will be essential in defining environmental studies and interpreting the results.
Download or read book Glyoxal written by J. Kielhorn and published by WHO. This book was released on 2004 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication, part of a series from the International Programme on Chemical Safety, evaluates the risk to human health and the environment posed by exposures to glyoxal. Glyoxal is used as a chemical intermediate in the production of pharmaceuticals and dyestuffs, as a cross-linking agent in the production of a range of different polymers, as a biocide, and as a disinfecting agent. It is frequently detected in fermented food and beverages since it is produced by microbial activity as well as non-enzymatic autoxidation of oil or browning reactions of saccharides.
Download or read book EPA 560 11 written by and published by . This book was released on 1980-07 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Re evaluation of Some Organic Chemicals Hydrazine and Hydrogen Peroxide written by IARC Working Group on the Evaluation of Carcinogenic Risks to Humans and published by . This book was released on 1999 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicological Profile for 1 1 2 2 tetrachloroethane written by and published by . This book was released on 1994 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Taking an Exposure History written by Arthur L. Frank and published by . This book was released on 2001 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicological Profile for 1 1 2 2 tetrachloroethane written by and published by . This book was released on 1990 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Identifying and Regulating Carcinogens written by United States. Congress. Office of Technology Assessment and published by Marcel Dekker Incorporated. This book was released on 1989 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: A background paper requested by the House Government Operations Committee and its subcommittee on Intergovernmental Relations and Human Resources. Describes policies issued by agencies of the US government concerning the identification, assessment, and regulation of carcinogenic chemicals; the chemicals that have been regulated because of carcinogenic risk; the US government's carcinogenicity testing program; and the Office of Technology Assessment's analysis of the extent of agency action on chemicals determined to be carcinogenic. No index. Annotation(c) 2003 Book News, Inc., Portland, OR (booknews.com)
Download or read book Drinking Water and Health written by National Research Council and published by National Academies Press. This book was released on 1977-01-01 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most recent volume in the Drinking Water and Health series contains the results of a two-part study on the toxicity of drinking water contaminants. The first part examines current practices in risk assessment, identifies new noncancerous toxic responses to chemicals found in drinking water, and discusses the use of pharmacokinetic data to estimate the delivered dose and response. The second part of the book provides risk assessments for 14 specific compounds, 9 presented here for the first time.
Download or read book Toxicological Profile for Toluene written by and published by . This book was released on 2000 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicological Profile for 1 1 2 2 tetrachloroethane written by and published by . This book was released on 1994 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
