LAMMS (Laser Microprobe Mass Spectrometry) has been used to observe the presence and location of a herbicide on plant lea, es. Leaves from soybean plants, sprayed with imazaquin, a member of the imidazolinone class of herbicides, at varying application rates, were examined by LAMMS without any special preparation. A rapid analysis for imazaquin was obtained confirming the suitability of LAMMS as an organic microprobe analyser. A comparison with standard chemical ionization and electron impact mass spectra of imazaquin showed evidence for laser‐induced fragmentation.
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Brinen et al. (1988) studied this question.
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