Approaches to the Nitrogen Cycle

There are many ways molecular biological approaches contribute to our understanding of the nitrogen cycle ... 

Using an approach analogous to that for carbon, Sano et al. (1998, 2001) have attempted to understand the nitrogen cycle at subduction zones. Again, the problem is to identify and quantify the various contributory sources to the volcanic output. At subduction zones, there are three major sources of nitrogen the mantle (M), atmosphere (A), and subducted sediments (S), and each has a diagnostic value and N2/ Ar... 

Jaffe D. A. (1992) The nitrogen cycle. In Global biogeochemical cycles (Ed. S. S. Butcher, R. J. Charlson, G. H. Orian and G. V. Wolfe), Acad. Press, London, pp. 263-284 Jang, M., Czoschke, N. M., S. Lee and K. M. Kamens (2002) Heterogeneous atmospheric aerosol production by acid-catalyzed particle-phase reactions. Science 298, 814-817 Jensen, J. N. (2003) A problem-solving approach to aquatic chemistry. John Wiley Sons Inc., 480 pp. 

Plutonium Purification. The aqueous feed for the second plutonium cycle is typically prepared by adding HNO and an excess of sodium nitrite, NaN02, to destroy the excess reductant and oxidize the Pu to the more extractable Pu . An alternative approach which reduces the amount of salt in the Hquid waste involves absorbing nitrogen tetroxide, N2O4, as a substitute for the NaN02 ... 

---