ESTHAG 16(8) 425A-484A 443-540 (1982) ISSN 0013-936X
ES&T
CONTENTS Volume 16, Number 8, August 1982
OUTLOOK
RESEARCH
437A Remote area baselines. N S F studies analyze air over glaciers in Greenland to establish natural from man-made activity.
443 Influence of copper and zinc on the growth of a freshwater alga, scenedesmus quadncauda: the significance of chemical speciation. Richard Petersen A general model is proposed that accounts for the observed biological effects as a function of the chemical speciation of both metals.
442A Radiation and health. The effects of radiofrequency and microwave radiation on workers and the general public are not known with certainty. 445A The environmental decade. Recent books on "state of the environment" show the trends in pollution that have occurred during the past 10 years.
REGULATORY FOCUS 447A Clean Water Act. Michael Deland charts the debated issues up for amendments.
FEATURES 448A Wildlife toxicology. The call for field and laboratory studies. Ronald J. Kendall, Western Washington University, Bellingham, Wash.
CRITICAL REVIEW 454A The environmental implications of offshore oil and gas activities. The American experience. Charles A. Menzie, E G & G Environmental Consultants, Waltham, Mass.
Environmental Science & Technology
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Environ. Sci. Technol., Vol. 16, No. 8, 1982
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448 Destruction of pollutants in water with ozone in combination with ultraviolet radiation. 1. General principles and oxidation of tetrachloroethylene. Gary R. Peyton, Francis Y. Huang, Jimmie L. Burleson, and William H. Glaze* The procedures used and some general aspects of the application of the O3/UV process to the destruction of several organic micropollutants in H 2 0 are reported. 454 Destruction of pollutants in water with ozone in combination with ultraviolet radiation. 2. Natural trihalomethane precursors. William H. Glaze,* Gary R. Peyton, Simon Lin, R. Y. Huang, and Jimmie L. Burleson Batch scale kinetic studies are reported which verify the potential of the O3/U V process for the control of trihalomethane. 459 Accumulation by fish of contaminants released from dredged sediments. James G. Seelye,* Robert J. Hesselberg, and Michael J. Mac
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Credits: 434A, 439A, ES& T's Julian Josephson; 440A, Cliff Davidson (Carnegie-Mellon University); 449A, 450A, 452A, U.S. Fish and Wildlife Service (Washington, D.C); 449A (osprey), W. C. Krantz; 449A (bird eggs), J. C. Jones; 450A (quail), E. P. Haddon; and 452A (grouse), H. H. Dill; 467A, R. Y. Richie— Texaco. Coven An adult peregrine falcon by Jo Keller, U.S. Fish & Wildlife Service (Washington, D.C.)
This study ascertained whether chemical pollutants associated with bottom sediments are accumulated by fish during exposure to a slurry of contaminated sediments. 464 Phthalate ester concentration variations in dated sediment cores from the Chesapeake Bay. James C. Peterson and David H. Freeman* All phthalates detected showed definite increases in concentration toward the sediment surface that closely paralleled their production rates. 470 The fate of fenitrothion in aquatic microcosms and the role of aquatic plants. Pearl Weinberger, Roy Greenhalgh,* Richard P. Moody, and Bruce Boulton Results suggest a light energized active uptake mechanism by plants and algae for the accumulation of fenitrothion from water. 473 Influence of bromide and ammonia upon the formation of trihalomethanes under water-treatment conditions. Tieu V. Luong, Christopher J. Peters, and Roger Perry* Described are the effects of bromide and ammonia upon the trihalomethane balance obtained when water is chlorinated under varying conditions. 479 Halocarbons as tracer substances in studies of the distribution patterns of chlorinated waters in coastal areas. Elisabet Fogelqvist,* Bjôrn Josefsson, and Claes Roos The method presented is simple and fast and permits large areas to be monitored when stable meteorological conditions are prevailing. 483 Fate and distribution of a quaternary ammonium surfactant, octadecyltrimethylammonium chloride (OTAQ, in wastewater treatment. Larry M. Games, James E. King, and Robert J. Larson*
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488 Decomposition of nitroguanidine. David L. Kaplan,* John H. Cornell, and Arthur M. Kaplan This investigation evaluates the susceptibility of nitroguanidine to microbial degradation. 492 Experimental and theoretical study of a two-dimensional virtual impactor. Larry J. Forney,* David G. Ravenhall, and Seung S. Lee Effects of throat angle and void width on the magnitude of the particle cutoff diameter, slope of the efficiency curve, and number of particles lost internally are studied. 498 Physical-chemical weathering of petroleum hydrocarbons from the Ixtoc I blowout: chemical measurements and a weathering model. Paul D. Boehm,* David L. Fiest, Donald Mackay, and Sally Paterson It is suggested that the model presented could be used in a predictive mode for similar future spills. 505 Lipid-soluble metal compounds in a coal gasifier process stream. Alan R. Dahl* and Suzanne H. Weissman Iron, chromium, zinc, and aluminum were identified and quantified in lipid-soluble fractions of coal gasifier tar along with trace amounts of lead and nickel. 510 Estimating drift and exposure due to aerial application of insecticides in forests. Masood Ghassemi,* Page Painter, Michael Powers, Norman B. Akesson, and Michael Dellarco This method provides a rational basis for estimating the maximal exposure to humans caught in the path of drifting spray.
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Results show that naturally occurring wastewater microorganisms have the potential to extensively mineralize OTAC.
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514 Visibility and aerosol composition in Houston, Tex. Thomas G. Dzubay,* Robert K. Stevens, Charles W. Lewis, Don H. Hern, William J. Courtney, John W. Tesch, and Mark A. Mason Empirical relationships among optical coefficients, visual range, and mass and composition of aerosol measured in Houston are presented. 525 In situ rapid-response measurement of H 2 S04/(NH4)2S04 aerosols in rural Virginia. Ray E. Weiss,* Timothy V. Larson, and Alan P. Waggoner In addition to aerosol measurements, data are presented on the response of particle light scattering to ambient relative humidity. 532 Chlorobenzenes in sediments, water, and selected fish from lakes Superior, Huron, Erie, and Ontario. Barry G. Oliver* and Karen D. Nicol The CB concentrations in the sediments and fish of Lake Ontario were higher than in those of the other lakes. NOTES 536 Cleaning procedures for removal of external deposits from plant samples. Hiroshi Saiki and Osamu Maeda* Of the three cleaning procedures presented, washing with HC1 was found to be the most effective. * To whom correspondence should be addressed. This issue contains no papers for which there is supplementary material in microform.
DEPARTMENTS 429A 430A 433A 475A 477A 479A 481A 482A 484A
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Environ. Sci. Technol., Vol. 16, No. 8, 1982
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