Seasonal trends of NH⁺₄ and NO^-₃ nitrogen isotope composition in rain collected at Jülich, Germany

References

• Aly, A. I. M. 1975. “N-Untersuchungen zur anthropo-genen Störung des natiirlichen Stickstoffzyklus. Thesis, Rheinisch-Westfilische Technische Hoch-schule Aachen, FRG.
   Google Scholar
• Ångström, A. and Högberg, L. 1952. On the content of nitrogen NH4-N and NO,-N) in atmospheric preci-pitation. Tellus 4, 31-42. On the content of nitrogen in atmospheric precipitation in Sweden. II. Tellus 4, 271–279.
   Google Scholar
• Bokhoven, C. and Theeuwen, H. J. 1966. Determina-tion of the abundance of carbon and nitrogen iso-topes in Dutch coals and natural gas. Nature 5052, 927–929.
   Google Scholar
• Bremner, J. M. and Tabatabai, M. A. 1973. Nitrogen-15 enrichment of soils and soil-derived nitrate. J. Environ. Quality 2, 363–365.
   Google Scholar
• Cheng, H. H., Bremner, J. M. and Edwards, A. P. 1964. Variations of nitrogen-15 abundance in soils. Science 146, 1574–1575.
   PubMed Web of Science ®Google Scholar
• Delwiche, C. C. 1970. The nitrogen cycle. Scientlfic American 223 (3), 137–146.
   Google Scholar
• Delwiche, C. C. and Steyn, P. L. 1970. Nitrogen iso-tope fractionation in soils and microbial reactions. Environ. Set TechnoL 4, 929–935.
   Web of Science ®Google Scholar
• Eriksson, E. 1958. On the isotopic composition of the ammonia and the nitrate ion in rain. Geochim. Cosmochim. Acta 15, 153.
   Google Scholar
• Feigin, A., Kohl, D. H., Shearer, G. and Commoner, B. 1974. Variation in the natural nitrogen-15 abun-dance in nitrate mineralized during incubation of several Illinois soils. Soil Set Soc. Amer. Proc. 38, 90–95.
   Web of Science ®Google Scholar
• Freyer, H. D. and Aly, A. I. M. 1974. Nitrogen-15 variations in fertilizer nitrogen. J. Environ. Quality 3, 405–406.
   Web of Science ®Google Scholar
• Freyer, H. D. 1975. Discussion of a paper presented by Edwards, A. P. Isotope effects in relation to the inter-pretation of 15N/141•1 ratios in tracer studies. In isotope ratios as pollutant source and behaviour indica-tors, pp. 467-468. Vienna: IAEA.
   Google Scholar
• Freyer, H. D. and Aly, A. I. M. 1975. Nitrogen-15 studies on identifying fertilizer excess in environ-mental systems. In Isotope ratios as pollutant source and behaviour indicators, pp. 21–33. Vienna: IAEA.
   Google Scholar
• Freyer, H. D. 1977.45“N values and chemical concentrations of ammonium and nitrate in rain collected at Mich, Germany, during 1975-1976. JUL-Report (to be published).
   Google Scholar
• Galbally, I. E. 1975. Emission of oxides of nitrogen (N0,) and ammonia from the earth's surface. Tellus 27, 67–70.
   Google Scholar
• Georgii, H. W. 1960. Untersuchungen iiber atmosphiri-sche Spurenstoffe und ihre Bedeutung fur die Chemie der Niederschläge. Geofis. pura e app!. 47, 47-155.
   Google Scholar
• Hauck, R. D., Bartholomew, W. V., Bremner, J. M., Broadbent, F. E., Cheng, H. H., Edwards, A. P., Keeney, D. R., Legg, J. O., Olsen, S. R. and Porter, L. K. 1972. Use of variations in natural N-isotope abundance for environmental studies: A question-able approach. Science 177, 453–454.
   PubMedGoogle Scholar
• Healy, T. V., McKay, H. A. C., Pilbeam, A. and Scargill, D. 1970. Ammonia and ammonium sulfate in the troposphere over the United Kingdom. J. Geophys. Res. 75,2317–2321.
   Google Scholar
• Hoering, T. 1957. The isotopic composition of the ammonia and the nitrate ion in rain. Geochim. Cosmochim. Ada 12, 97–102.
   Web of Science ®Google Scholar
• Junge, C. E. 1958. The distribution of ammonia and nitrate in rain water over the United States. Trans. Am. Geophys. Union 39, 241–248.
   Google Scholar
• Junge, C. E. 1963. Air chemistry and radioactivity. New York and London: Academic Press, 382 pp.
   Google Scholar
• Keeney, D. R. and Gardner, W. R. 1975. The dynamics of nitrogen transformations in the soil. In The changing global environment (ed. S. F. Singer), pp. 367–375. Dordrecht/Holland: D. Reidel Publ. Comp.
   Google Scholar
• Kohl, D. H., Shearer, G. B. and Commoner, B. 1971. Fertilizer nitrogen: Contribution to nitrate in surface water in a corn belt watershed. Science 174, 1331–1334.
   PubMed Web of Science ®Google Scholar
• McConnell, J. C. 1973. Atmospheric ammonia. J Geophys. Res. 78, 7812–7821.
   Google Scholar
• Meinecke, J. and Bonnenberg, H. 1972. Umweltbelastung durch Energieerzeugung in Nordrhein-Westfalen. Interner Bericht KFA-IRE-6-72. Kernforschungsanlage Jiilich GmbH.
   Google Scholar
• Moore, H. 1974. Isotopic measurement of atmospheric nitrogen compounds. Tellus 26, 169–174.
   Google Scholar
• Mrose, H. 1966. Measurements of pH, and chemical analyses of rain-, snow-, and fog-water. Tellus 18. 266–270.
   Web of Science ®Google Scholar
• Rennie, D. A. and Paul, E. A. 1975. Nitrogen isotope ratios in surface and sub-surface soil horizons. In Isotope ratios as pollutant source and behaviour indicators, pp. 441-453. Vienna: IAEA.
   Google Scholar
• Robinson, E. and Robbins, R. C. 1975. Gaseous atmos-pheric pollutants from urban and natural sources. In The changing global environment (ed. S. F. Singer), pp. 111–123. Dordrecht/Holland: D. Reidel Publ. Comp.
   Google Scholar
• Scalan, R. S. 1959. The isotopic composition, concentra-tion and chemical state of nitrogen in igneous rocks. Thesis, Univ. Arkansas/U.S.A. Cited by F. Wlotzka (I. c.).
   Google Scholar
• Schalich, J. 1968. Bodenkarte von Nordrhein-Westfalen 1:25 000, Erlduterungen Bl. 5104 Ddren. Geo-logisches Landesamt Nordrhein-Westfalen, Krefeld, 102 pp.
   Google Scholar
• Schalich, J. 1972a. Bodenkarte von Nordrhein-Westfalen 1:25 000, Erlduterungen Bl. 5003 Lin-nich. Geologisches Landesamt Nordrhein-Westfalen, Krefeld, 91 pp.
   Google Scholar
• Schalich, J. 1972.. Bodenkarte von Nordrhein-Westfalen 1:25 000, Erlduterungen Bl. 5004 Mich. GeologischesLandesamtNordrhein-Westfalen,Krefeld, 96 pp.
   Google Scholar
• Shearer, G. B., Kohl, D. H. and Commoner, B. 1974. The precision of determinations of the natural abun-dance of nitrogen-15 in soils, fertilizers, and shelf chemicals. Soil Science 118, 308–316.
   Web of Science ®Google Scholar
• Söderlund, R. and Svensson, B. H. 1976. The global nitrogen cycle. In Nitrogen, phosphorus and sul-phur-Global cycles. SCOPE Report 7 (eds. B. H. Svensson and R. Söderlund). Ecol. Bull. (S tockhol m) 22, 23–73.
   Google Scholar
• Spindel, W. 1954. The calculation of equilibrium con-stants for several exchange reactions of nitrogen-15 between oxygen compounds of nitrogen. J. Chem. Phys. 22, 1271–1272.
   Google Scholar
• Statistisches Jahrbuch 1975 für die Bundesrepublik Deutschland. Statistisches Bundesamt, Wiesbaden. Stuttgart und Mainz: Verlag W. Kohlhammer GmbH.
   Google Scholar
• Statistisches Jahrbuch Nordrhein-Westfalen 1975. 17. Jahrgang. Landesamt Fur Datenverarbeitung und Statistik Nordrhein-Westfalen.
   Google Scholar
• Syers, J. K. 1966. The relationship between the con-centration of nitrate- and ammonia-nitrogen in precipitation. Tellus 18, 146–147.
   Web of Science ®Google Scholar
• United Nations Statistical Yearbook 1974. United Nations, New York, 1975.
   Google Scholar
• Virtanen, A. J. 1952. Molecular nitrogen fixation and nitrogen cycle in nature. Tellus 4,304–306.
   Google Scholar
• Wellmann, R. P., Cook, F. D. and Krouse, H. R. 1968. Nitrogen-15: Alteration of abundance. Science 161, 269–270.
   Google Scholar
• Wlotzka, F. 1972. Nitrogen isotopes in nature. In Handbook of geochemistry (ed. K. H. Wedepohl), Vol. 1111, Chap. 7-B-2. Berlin, Heidelberg, New York: Springer-Verlag.
   Google Scholar