Apparatus and procedure for distillation and determination of ammonium.

Determination and isotope-ratio analysis of different forms of nitrogen in soils: I.

vogt s fractionation method dating-66

Combined use of ground-water dating, chemical, and isotopic analyses to resolve the history and fate of nitrate contamination in two agricultural watersheds, atlantic coastal plain, Maryland.

Stable isotope evidence for an atmospheric origin of desert nitrate deposits in northern Chile and southern California, U.

Use of multiple isotope tracers to evaluate denitrification in groundwater: case study of nitrate from a large-flux septic system plume, Ground Water, in press (Dec.

Interlaboratory comparison of reference materials for nitrogen-isotope-ratio measurements, In: Reference and intercomparison materials for stable isotopes of light elements, International Atomic Energy Agency, IAEA TECDOC 825, pp.

1 « In the summer of 1897, Freud undertook his most heroic feat – a psychoanalysis of his own unconscious. For no one again can be the first to explore those depths » [1] Jones, 1953, 319..

The suspicion may stem from the manner in which this singular event is staged. Vous recevrez un email à chaque nouvelle parution d'un numéro de cette revue. It is tempting for a critical historian to perceive this self-analysis as a mere hagiographic invention. It is hard for us nowadays to imagine how momentous this achievement was, that difficulty being the fate of most pioneering exploits. This depiction of Freud as the heroic discoverer of the dark continent of the unconscious was published in the first volume of Ernest Jones’s biography in the 1950s.Nevertheless, the reliable quantification of the in situ biodegradation process it is still a major challenge.Compound-specific stable isotope analysis has become an established method for the qualitative analysis of biodegradation in the field and this method is also proposed for a quantitative analysis.Biodegradation of contaminants is a common remediation strategy for subsurface environments.