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Dde Ddt Dieldrin
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Book Synopsis DDE, DDT + Dieldrin by : Stanley N. Wiemeyer
Download or read book DDE, DDT + Dieldrin written by Stanley N. Wiemeyer and published by . This book was released on 1986 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Toxicological Profile for DDT, DDE, and DDD by :
Download or read book Toxicological Profile for DDT, DDE, and DDD written by and published by . This book was released on 1989 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Toxicological Profile for DDT, DDE, and DDD by :
Download or read book Toxicological Profile for DDT, DDE, and DDD written by and published by . This book was released on 1994 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis DDE, DDT + Dieldrin by : Stanley N. Wiemeyer
Download or read book DDE, DDT + Dieldrin written by Stanley N. Wiemeyer and published by . This book was released on 1986 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Draft Toxicological Profile for DDT, DDE, and DDD by :
Download or read book Draft Toxicological Profile for DDT, DDE, and DDD written by and published by . This book was released on 2000 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Residues of DDT, Dieldrin, and Heptachlor in Earthworms During Two Years Following Application by : Charles D. Gish
Download or read book Residues of DDT, Dieldrin, and Heptachlor in Earthworms During Two Years Following Application written by Charles D. Gish and published by . This book was released on 1982 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Study plots were treated with specific quantities of active ingredient per hectare with either DDT, dieldrin, or heptachlor. Earthworms and soils were sampled from each treated plot at specific time intervals (up to 2 years after treatment) and analyzed by gas chromatography for specific pesticide residues. Individual and total metabolites in soils and earthworms tended to increase linearly with increasing levels of application. In soils, losses of specified biocides varied by species over time ranging from no significant loss to a decrease in heptachlor during the two years following application. In earthworms, maximum residues usually occurred 2-4 months after application, then declined. During the decline, residue levels were cyclic: levels elevated from late spring to early fall and depressed from late fall to early spring. High levels (usually May) and lows (usually January) coincided with seasonal high and low activity of eathworms.
Book Synopsis DDE, DDT + Dieldrin by : Stanley N. Wiemeyer
Download or read book DDE, DDT + Dieldrin written by Stanley N. Wiemeyer and published by . This book was released on 1986 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proposed Toxic Pollutant Effluent Standards for Aldrin/dieldrin, DDT, DDD, and DDE, Endrin and Toxaphene by : United States. Environmental Protection Agency
Download or read book Proposed Toxic Pollutant Effluent Standards for Aldrin/dieldrin, DDT, DDD, and DDE, Endrin and Toxaphene written by United States. Environmental Protection Agency and published by . This book was released on 1977* with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mercury, Dieldrin, DDT, DDE, and PCB Levels in Tissues from Fish and Wildlife in Utah by : Fred A. Smith
Download or read book Mercury, Dieldrin, DDT, DDE, and PCB Levels in Tissues from Fish and Wildlife in Utah written by Fred A. Smith and published by . This book was released on 1973 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish and wildlife were randomly sampled in Utah from pre-selected x areas and analyzed for levels of total mercury, dieldrin, DDT, and DDE. Levels were well within consumptive tolerance or guideline limits except for mercury levels of fish in Willard Bay Reservoir. PCB's were also identified in a large proportion of samples. None of the chukars, 6 percent of the pheasants, 4 percent of the waterfowl, and none of the fish sampled, excluding Willard Bay Reservoir, were above the 0.5 ppm guideline level for mercury established by the Food and Drug Administration. Seventy-seven percent of the fish sampled from Willard Bay Reservoir were above the 0.5 ppm guideline level. Only one duck (2 percent) was above the maximum permissible concentration for dieldrin. All of the chukars, pheasants, other waterfowl, and fish were well below human consumptive tolerance limits for dieldrin and DDT + DDE. It is recommended that studies be initiated to more closely define possible sources of mercury and the health hazard involved in consumption of these fish.
Book Synopsis Verifying 303(d) DDT/DDE and Dieldrin Listings for the Upper Yakima River by : David Rogowski
Download or read book Verifying 303(d) DDT/DDE and Dieldrin Listings for the Upper Yakima River written by David Rogowski and published by . This book was released on 2000 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Epidemiology of DDT. by : John E. Davies
Download or read book Epidemiology of DDT. written by John E. Davies and published by . This book was released on 1972 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Uptake, Metabolism, and Elimination of DDT and Dieldrin by Freshwater Mussels by : James William Bedford
Download or read book Uptake, Metabolism, and Elimination of DDT and Dieldrin by Freshwater Mussels written by James William Bedford and published by . This book was released on 1970 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hormonally Active Agents in the Environment by : National Research Council
Download or read book Hormonally Active Agents in the Environment written by National Research Council and published by National Academies Press. This book was released on 2000-02-03 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some investigators have hypothesized that estrogens and other hormonally active agents found in the environment might be involved in breast cancer increases and sperm count declines in humans as well as deformities and reproductive problems seen in wildlife. This book looks in detail at the science behind the ominous prospect of "estrogen mimics" threatening health and well-being, from the level of ecosystems and populations to individual people and animals. The committee identifies research needs and offers specific recommendations to decision-makers. This authoritative volume: Critically evaluates the literature on hormonally active agents in the environment and identifies known and suspected toxicologic mechanisms and effects of fish, wildlife, and humans. Examines whether and how exposure to hormonally active agents occursâ€"in diet, in pharmaceuticals, from industrial releases into the environmentâ€"and why the debate centers on estrogens. Identifies significant uncertainties, limitations of knowledge, and weaknesses in the scientific literature. The book presents a wealth of information and investigates a wide range of examples across the spectrum of life that might be related to these agents.
Book Synopsis DDT by : United States. Environmental Protection Agency
Download or read book DDT written by United States. Environmental Protection Agency and published by . This book was released on 1975 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Residue Reviews/Rückstandsberichte by : Francis A. Gunther
Download or read book Residue Reviews/Rückstandsberichte written by Francis A. Gunther and published by Springer. This book was released on 1971-04-06 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: That residues of pesticide and other "foreign" chemicals in food stuffs are of concern to everyone everywhere is amply attested by the reception accorded previous volumes of "Residue Reviews" and by the gratifying enthusiasm, sincerity, and efforts shown by all the in dividuals from whom manuscripts have been solicited. Despite much propaganda to the contrary, there can never be any serious question that pest-control chemicals and food-additive chemicals are essential to adequate food production, manufacture, marketing, and storage, yet without continuing surveillance and intelligent control some of those that persist in our foodstuffs could at times conceivably endanger the public health. Ensuring safety-in-use of these many chemicals is a dynamic challenge, for established ones are continually being dis placed by newly developed ones more acceptable to food technologists, pharmacologists, taxicologists, and changing pest-control requirements in progressive food-producing economies. These matters are of genuine concern to increasing numbers of governmental agencies and legislative bodies around the world, for some of these chemicals have resulted in a few mishaps from improper use. Adequate safety-in-use evaluations of any of these chemicals per sisting into our foodstuffs are not simple matters, and they incorporate the considered judgments of many individuals highly trained in a variety of complex biological, chemical, food technological, medical, pharmacological, and toxicological disciplines.
Book Synopsis Toxicological Profile for Aldrin/dieldrin by :
Download or read book Toxicological Profile for Aldrin/dieldrin written by and published by . This book was released on 2002 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Means for Controlled Self-destruction of Pesticides by : Aerojet-General Corporation. Environmental Systems Division
Download or read book Investigation of Means for Controlled Self-destruction of Pesticides written by Aerojet-General Corporation. Environmental Systems Division and published by . This book was released on 1970 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory studies demonstrated the feasibility of controlled destruction of chlorinated pesticides such as DDT. The concept comprised (1) means to degrade DDT to a harmless form, and (2) methods to delay the reaction for given pest-control action. Chemical methods for degrading DDT were screened and reduction was selected as the most promising technique. Destruction of DDT, without forming DDE as a product, was demonstrated in laboratory studies by mildly acidic reduction with zinc powder. The principal product is bis(p-chlorophenyl) ethane, DDT with all three aliphatic chlorines removed; a material stated to be "void of the neurotoxic effects of DDT." Catalysis of the reaction resulted in complete destruction of DDT in 1 hr at 25°C and conversion to bis(chlorophenyl) ethane in 4-8 hrs. Catalyzed aluminum or iron reduction of DDT produced tetra(p-chlorophenyl)tetrachlorobutane, reportedly lipoid insoluble. A 90% destruction of DDT in soil in 4 days was demonstrated in a laboratory test with spray-applied integral, catalyzed zinc-DDT particles (5-micron). Reaction delay can be achieved with wax or silicone coatings on the reductant which are slowly dissolved or eroded, or possibly slow air oxidation of sulfur. Coatings were produced which stopped zinc-acid reaction. A test of combined reductant - delayed action technique was made using silanized, catalyzed zinc (5 microns)-DDT particles sprayed onto soil. Although faulty coating prevented the desired delay, 95% decomposition of DDT was obtained. Effective reductive degradation of the chlorinated pesticides dieldrin, endrin, aldrin, chlordane, toxaphene, Kelthane, methoxychlor, Perthane and lindane, and selected polychlorinated biphenyls was shown. Degradation of DDT in water was demonstrated, a 421 mg/l DDT suspension being reduced to 1 ppm after 1 hr reaction at 75°C.