共 50 条
- [26] DETERMINATION OF BORON TRACES IN RYE GRASS BCR-281 BY ISOTOPE-DILUTION MASS-SPECTROMETRY FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1988, 332 (06): : 645 - 647
- [29] A METHOD FOR THE DETERMINATION OF THEOPHYLLINE IN SERUM BY ISOTOPE-DILUTION MASS-SPECTROMETRY FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1992, 344 (12): : 549 - 553