Comparative studies of the matrix-assisted laser desorption/ionization (MALDI) of 30 antibiotics were made using a-cyano-4-hydroxycinnamic acid (HCCA), 2,5-dihydroxybenzoic acid (DHB), 5,10,15,20tetrakis(4-hydroxyphenyl)-21H,23H-porphyrin and meso-tetra(N-methyl-4-pyridyl)porphyrin matrices. Most an
Study of laser desorption/ionization time-of-flight mass spectrometry for the analysis of pesticides
β Scribed by M. Benazouz; B. Hakim; J. L. Debrun
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 67 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0951-4198
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β¦ Synopsis
Direct desorption/ionization (no matrix) and matrix-assisted laser desorption/ionization (MALDI) were tested for the analysis of four pesticides, aldicarb, aminotriazole, dinoterb and ioxynil, at the 0.1 mg/L level in water. Only MALDI provided good sensitivities, except for aldicarb. The most interesting result is that quantitative analysis of aminotriazole at the required level should be feasible using MALDI, which is not possible using standard methods, at the present time.
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