For tobacco-related samples however, with a large nicotine peak, 2MN eluted on the tail of nicotine, which will always create a problem for low-resolution-MS-based confirmation of the presence of a low level of 2MN because with m / z = 84 amu as the MS base peak for both nicotine and 2MN, obtaining a mass spectrum for a small candidate 2MN peak using subtraction of the background signal from a large nicotine tail will not result in a properly-sized m / z = 84 amu signal for proper MS pattern concordance
I have also discovered I can take the shredder outside and flush the blades with a good, long flow of household rubbing alcohol and let it dry overnight
But sometimes it feels like they know who to go after. His concern is not about individual inspectors, but about how enforcement functions structurally
A solvent blank was prepared following the same extraction method as for the artifacts, but with no artifact present in the beaker
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