共 8 条
- [3] GIOUMOUSIS G, 1963, J CHEM PHYS, V39, P1413
- [5] PULSED POSITIVE NEGATIVE-ION CHEMICAL IONIZATION MASS-SPECTROMETRY [J]. ANALYTICAL CHEMISTRY, 1976, 48 (14) : 2098 - 2105
- [6] MCLAREN AD, 1967, SOIL BIOCH
- [7] Munson B., 1977, ANAL CHEM, V49, p772A