Search Results for the EPA National Library Catalog

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Select Item Title Year Published
Nitrate interference in total kjeldahl nitrogen determinations and its removal by anion exchange resins / 1977
Nitrification and Denitrification Facilities. 1971
Nitrification in Surface Waters Tributary to Lake Superior. 1971
Nitrification inhibition biokinetics / 1983
Nitrification of secondary municipal waste effluents by rotating bio-discs / 1978
Nitrogen - Ammonia/Nitrate/Nitrite. Water Quality Standards Criteria Summaries. A Compilation of State/Federal Criteria. 1990
Nitrogen in Industry. 1971
Nitrogen Removal and Identification for Water Quality Control. 1971
Nitrogen removal by ammonia stripping / 1973
Nitrogen Removal by Ammonia Stripping. 1973
Nitrogen Removal by Breakpoint Chlorination. 1970
Nitrogen removal from wastewaters 1970
Nitrogen Removal from Wastewaters. 1970
Nitrogen Removal Today. 1971
Nitrogen Sources and Cycling in Natural Waters. 1973
Nitrogen Turnover in Impoundments. 1973
Nitrogen-ammonia/nitrate/nitrite : water quality standards criteria summaries a compilation of state/federal criteria / 1988
Nitrogenous compounds in the environment. 0
Non-Point Source Studies on Chesapeake Bay. II. Nutrients in Land Runoff from Rhode River Watersheds in 1975 and 1976. 1977
Notice of intent to re-evaluate the aquatic life ambient water quality criteria for Ammonia / 2004
NOx formation in CO flames / 1977
Nutrient Regeneration by Zooplankton in Southern Lake Huron. 1983
Nutrient Removal from Waste Water, 1970 Status. 1970
Nutrient Removal from Wastewater by Physical-Chemical Processes. 1971
Occupational exposure to ammonia. 1974
Odors from confined livestock production : a state-of-the-art / 1974
On-Line Colorimetric Analyzers for Monitoring Nitrate-Nitrite, Ammonia, Orthophosphorus and Total Hydrolyzable Phosphorus in Wastewater-Treatment Process Streams. 1974
On-Road Motor Vehicle Emissions including NH3, SO2 and NO2. 2009
Open space as an air resource management measure ... / 1976
Open Space as an Air Resource Management Measure. Volume IA: Appendix to Sink Factors. 1976
Operational Experience of the EPA Owned Bench Scale Pilot Plant for Evaluating SCR DeNOx Catalysts. 1991
Optimization of ammonia removal by ion exchange using clinoptilolite / 1972
Optimized chemiluminescence system for measuring atmospheric ammonia / 1979
Organic Analyses in Water Quality Control Programs - Training Manual. 1980
Organic Analyses in Water Quality Control Programs. Training Manual. 1977
Organic Analyses in Water Quality Control Programs; Instructor's Guide for Conducting the Course. 1980
Organic Analyses in Water Quality Control Programs; Training Manual. 1978
Overview of current spill cleanup technology 1982
Oxidation ditch treatment of meatpacking wastes / 1979
Oxidation of ammonia in air behind a normal shock / 1974
Oxidation of Nitrapyrin to 6-Chloropicolinic Acid by the Ammonia-Oxidizing Bacterium 'Nitrosomonas europaea'. 1992
Oxides of nitrogen/ammonia control technology for oil shale retort emissions : Final report {MICROFICHE} / 1984
Performance study of four automatic ammonia monitors under controlled conditions / 1994
Perspectives on nonpoint source pollution : proceedings of a national conference, Kansas City, Missouri, May 19-22, 1985. 1985
PFOA: Lactational and Placental Transport Pharmacokinetic Study in Rats. 2003
Physical and Mathematical Modeling of Nitrification in a Lotic System. 1978
Physical-Chemical Nitrogen Removal from Municipal Wastewater. 1971
Physical-Chemical Nitrogen Removal Wastewater Treatment. 1974
Physical-Chemical Treatment Technology. Training Manual. 1972
Phytoplankton Assemblages of the Nearshore Zone of Southern Lake Michigan. 1979
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