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Adducts of catechols and histidine, which are produced by reactions of 1,2-quinones andp-quinone methides with histidyl residues in proteins incorporated into the insect exoskeleton, were characterized using electrospray ionization mass spectrometry (ESMS), tandem electrospray mass spectrometry (ESMS–MS, collision-induced dissociation), and ion trap mass spectrometry (ITMS). Compounds examined included...
Conventional capillary liquid chromatography/mass spectrometry (LC/MS) typically employs low μl/min flow rates with gas/liquid sheath to enhance spray stability. Over the past several years a number of reports have demonstrated success with electrospray (ES) interface designs optimized for submicroliter/min flows which have clear advantages in terms of enhancement of detection limit, lower sample...
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