Pub Date : 1981-12-31DOI: 10.1515/9783112524145-005
H. Gerstenberger, G. Meier
{"title":"Die Stellung der Emissionsspektrometrie unter den nichtmassenspektrometrischen Methoden der Isotopenanalyse","authors":"H. Gerstenberger, G. Meier","doi":"10.1515/9783112524145-005","DOIUrl":"https://doi.org/10.1515/9783112524145-005","url":null,"abstract":"","PeriodicalId":296572,"journal":{"name":"April 1981","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116015890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1981-12-31DOI: 10.1515/9783112524145-004
H. Hübner
{"title":"Wird der özonschild der Erde durch den zunehmenden Stickstoff- Dün gern ittelverbr auch zerstört ? — Ein Beitrag der Isotopenforschung","authors":"H. Hübner","doi":"10.1515/9783112524145-004","DOIUrl":"https://doi.org/10.1515/9783112524145-004","url":null,"abstract":"","PeriodicalId":296572,"journal":{"name":"April 1981","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129142359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1981-12-31DOI: 10.1515/9783112524145-003
K. Wetzel, A. Runge
{"title":"Über die Isotopenzusammensetzung der Elemente Wasserstoff, Sauerstoff, Kohlenstoff, Stickstoff und Schwefel im menschlichen Organismus","authors":"K. Wetzel, A. Runge","doi":"10.1515/9783112524145-003","DOIUrl":"https://doi.org/10.1515/9783112524145-003","url":null,"abstract":"","PeriodicalId":296572,"journal":{"name":"April 1981","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128821970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1981-12-31DOI: 10.1515/9783112524145-011
L. Kaden, B. Lorenz, K. Schmidt, H. Sprinz, M. Wahren
{"title":"Nitridokomplexe des Technetium (Y)","authors":"L. Kaden, B. Lorenz, K. Schmidt, H. Sprinz, M. Wahren","doi":"10.1515/9783112524145-011","DOIUrl":"https://doi.org/10.1515/9783112524145-011","url":null,"abstract":"","PeriodicalId":296572,"journal":{"name":"April 1981","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117140021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1981-12-31DOI: 10.1080/10256018108544581
K. Hirschberg, P. Krtnnbiegel, H. Faust
Zwischen wasirigen Harnstofflosungen und stark sauren Kationenaustauscher-Harzen vom Typ der Polystyrolsulfon-sauren stellt sich ein Fest-FIussig-Phasenverteilungsgleichgewicht mit einem Isotopiceffekt des Stickstoffs und Kohlenstoffs im Harnstoff ein. Die [13C, 15N] Harnstoff-Molekule werden bevorzugt an die Austauschermatrix gebunden. Die elementaren Trennfaktoren fur die 15N- und fur die 13C-Anreichernng werden zu 1,004 bestimmt. Durch saulenchromatographische Trennung an Dowex 50 WX8 wird die praaparativc Darstellung doppelt markierten Harnstoffs moglich.
{"title":"Isotopenfraktionierung des Stickstoffs und Kohlenstoffs durch Harnstoff-Chromatographie","authors":"K. Hirschberg, P. Krtnnbiegel, H. Faust","doi":"10.1080/10256018108544581","DOIUrl":"https://doi.org/10.1080/10256018108544581","url":null,"abstract":"Zwischen wasirigen Harnstofflosungen und stark sauren Kationenaustauscher-Harzen vom Typ der Polystyrolsulfon-sauren stellt sich ein Fest-FIussig-Phasenverteilungsgleichgewicht mit einem Isotopiceffekt des Stickstoffs und Kohlenstoffs im Harnstoff ein. Die [13C, 15N] Harnstoff-Molekule werden bevorzugt an die Austauschermatrix gebunden. Die elementaren Trennfaktoren fur die 15N- und fur die 13C-Anreichernng werden zu 1,004 bestimmt. Durch saulenchromatographische Trennung an Dowex 50 WX8 wird die praaparativc Darstellung doppelt markierten Harnstoffs moglich.","PeriodicalId":296572,"journal":{"name":"April 1981","volume":"134 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130982437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1981-12-31DOI: 10.1080/10256018108544578
H. Sprinz, E. Winkler, H. Schäfer
In aqueous solutions of sonicated egg-lecithin vesicles (5 weight-%) the 1H-NMR parameters line width, area, and chemical shift of the signal of the (CH3)3N+ group were determined in dependence on the dose of gamma radiation (0 … 12 kGy). The application of curopium ions made it possible, by means of a line shape analysis, to calculate these parameters for the inside as well as for the outside lipid layer. With increasing 60Co-radiation dose the line widths increase linearly. The line width for the outside lipid layer increases significantly more rapidly than for the inside layer. This fact allows us to conclude that there exists a preferred radiation damage of the outside lipid layer. The asymmetry may he a consequence of an indirect radiation action mediated by the radicals of the water radiolysis. From the temporal change of the NMR parameters information can be obtained about the radiation action on transport processes in the vesicles. Beginning at a threshold value (approx. 5 kGy) the permeation of t...
{"title":"NMR Experiments on Ion Permeation in Irradiated Model Membranes","authors":"H. Sprinz, E. Winkler, H. Schäfer","doi":"10.1080/10256018108544578","DOIUrl":"https://doi.org/10.1080/10256018108544578","url":null,"abstract":"In aqueous solutions of sonicated egg-lecithin vesicles (5 weight-%) the 1H-NMR parameters line width, area, and chemical shift of the signal of the (CH3)3N+ group were determined in dependence on the dose of gamma radiation (0 … 12 kGy). The application of curopium ions made it possible, by means of a line shape analysis, to calculate these parameters for the inside as well as for the outside lipid layer. With increasing 60Co-radiation dose the line widths increase linearly. The line width for the outside lipid layer increases significantly more rapidly than for the inside layer. This fact allows us to conclude that there exists a preferred radiation damage of the outside lipid layer. The asymmetry may he a consequence of an indirect radiation action mediated by the radicals of the water radiolysis. From the temporal change of the NMR parameters information can be obtained about the radiation action on transport processes in the vesicles. Beginning at a threshold value (approx. 5 kGy) the permeation of t...","PeriodicalId":296572,"journal":{"name":"April 1981","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114928386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1981-12-31DOI: 10.1080/10256018108544580
S. Rumml, B. Bayrol, I. Heine, M. Wahren
Be der Disproportionwrung von Damin- und Hydbazinderaten kommt cs zu Fraktronwrung der Stickstoff tope in den Reaktionsprodukten im Verglech zum Ausgangsprodukt. Untersuchungen im Berach der naturlichen. Haufigkeiten der Stickstoffisotope ergaben stets eine relat Anreicherung des 15N - Isotops im Reaktionsprodukt mit der groseren Anzuhl von Schungungsfrehetsgraden
{"title":"Isotopenfraktionierungseffekte in Disproportionierungsreaktionen von Diimin- und Hydrazinderivaten","authors":"S. Rumml, B. Bayrol, I. Heine, M. Wahren","doi":"10.1080/10256018108544580","DOIUrl":"https://doi.org/10.1080/10256018108544580","url":null,"abstract":"Be der Disproportionwrung von Damin- und Hydbazinderaten kommt cs zu Fraktronwrung der Stickstoff tope in den Reaktionsprodukten im Verglech zum Ausgangsprodukt. Untersuchungen im Berach der naturlichen. Haufigkeiten der Stickstoffisotope ergaben stets eine relat Anreicherung des 15N - Isotops im Reaktionsprodukt mit der groseren Anzuhl von Schungungsfrehetsgraden","PeriodicalId":296572,"journal":{"name":"April 1981","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125151062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1981-12-31DOI: 10.1515/9783112524145-006
I. Maass, G. Weise
{"title":"Untersuchungen zur regionalen Ausbreitung von Schadstoffen mit Hilfe technogener Isotopenvariationen","authors":"I. Maass, G. Weise","doi":"10.1515/9783112524145-006","DOIUrl":"https://doi.org/10.1515/9783112524145-006","url":null,"abstract":"","PeriodicalId":296572,"journal":{"name":"April 1981","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124894103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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