| 摘要 |
PCT No. PCT/GB90/00975 Sec. 371 Date Feb. 20, 1992 Sec. 102(e) Date Feb. 20, 1992 PCT Filed Jun. 25, 1990 PCT Pub. No. WO91/04570 PCT Pub. Date Apr. 4, 1991.A sample for analysis by Laser Desorption Mass Spectrometry is prepared by dissolving the sample material in a solvent and applying the solution to a matrix material applied to a target for a mass spectrometer. The matrix material is selected from the group consisting of (i) cis-Cinnamic Acid with the aromatic ring substituted by one or more groups which possess an electron pair on the atom adjacent to the ring; (ii) trans-Cinnamic Acid with the aromatic ring substituted by one or more groups which possess an electron pair on the atom adjacent to the ring; (iii) Benzoic Acid, with one or more substituent groups as described in (i); and (iv) Coumarin, with one or more substituent groups as described in (i). |
