共 20 条
[2]
BREMNER JM, 1965, AGRONOMY, V9, P1256
[3]
Deines P., 1970, INT J MASS SPECTROM, V4, P283, DOI DOI 10.1016/0020-7381(70)85044-6
[5]
PRESSURE EFFECT AND PEAK BROADENING IN GAS SOURCE STABLE ISOTOPE MASS-SPECTROMETRY
[J].
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES,
1977, 25 (02)
:155-165
[7]
THERMAL DECOMPOSITION OF HYDRAZOBENZENE, STUDIED BY THE USE OF NITROGEN ISOTOPES
[J].
JOURNAL OF THE CHEMICAL SOCIETY,
1953, (JUN)
:1666-1669
[8]
Kjeldahl J., 1883, Z ANAL CHEM, V22, P366, DOI [10.1007/BF01338151, DOI 10.1007/BF01338151]
[10]
RAPID SIMULTANEOUS DETERMINATION OF N-15 AND TOTAL NITROGEN BY DIRECT COUPLING OF MASS-SPECTROMETER AND AUTOMATIC ELEMENTAL ANALYZER
[J].
FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE,
1978, 292 (01)
:44-45