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- [3] DETERMINATION OF N-15 AND TOTAL NITROGEN BY COUPLING OF AN EMISSION SPECTROMETRIC N-15-ANALYZER WITH AN AUTOMATIC N-ANALYZER FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1981, 307 (05): : 385 - 388
- [4] SEPARATION OF AMMONIUM AND HYDROXYLAMINE NITROGEN FOR THE N-15 DETERMINATION ISOTOPENPRAXIS, 1990, 26 (02): : 85 - 87
- [7] EXPERIENCES WITH SIMULTANEOUS DETERMINATION OF TOTAL NITROGEN AND N-15 BY COUPLING OF DUMAS NITROGEN ANALYZER WITH THE NOI-6 ISOTOPENPRAXIS, 1992, 28 (01): : 85 - 96
- [8] FACILE INTRODUCTION OF N-15 INTO CHALCOGEN NITROGEN SYSTEMS USING N-15-LABELED AMMONIA JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1992, (13): : 2129 - 2130
- [9] DETERMINATION OF NITROGEN LOSSES FROM PLANTS BY MEANS OF N-15 SOVIET SOIL SCIENCE, 1984, 16 (06): : 117 - 121