共 45 条
- [2] 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
- [3] 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
- [9] THE USE OF HEXAMETHYLENETETRAMINE FOR N-15 ISOTOPE ABUNDANCE MEASUREMENTS WITH AN ORGANIC MASS-SPECTROMETER BIOMEDICAL MASS SPECTROMETRY, 1982, 9 (01): : R3 - R3