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| Keywords: High TEM electrospray.jpg High_TEM_electrospray - Sample preparation of synthetic polymers that will not dissolve at room temperature presents a significant obstacle to the MALDI analysis of such materials Bill Blair has constructed a device in our laboratory for the electrospray deposition of polymer samples dissolved in solvent up to 150 °C The electrospray apparatus the MALDI target and a small reservoir of dissolved polymer are contained in a thermostated heated zone allowing the dissolved polymer to be electrosprayed onto the target without precipitation out of solution To electrospray a sample solvent delivered by a syringe pump operating at room temperature displaces hot polymer-solvent solution within the heated zone of the apparatus We have found that electrospray MALDI sample preparation crucial for creating reproducible mass spectra which is critical to our standards development effort http //polymers msel nist gov/facilities/maldi/image/High_TEM_electrospray jpg author Images of mass spectrometers PD-USGov | ||||
