Hi all
Remember that the surface of your Al pot is not Al, it's aluminium oxide (Al2O3) as Al immediately oxidises in air. It's really the porosity of the oxide coating that may adsorb any oils from the first coffee that is run through a cleaned pot. I bet that if you run an analysis across the surface of your pot you will find a lot of adsorbed organics.
Just cut up your pot and place a bit of the pot (just a one sq. cm) with the inside facing up in an electron microscope and do a light element analysis. Or use a laser ablation mass spec scan over the surface.
Mike
Mike
Remember that the surface of your Al pot is not Al, it's aluminium oxide (Al2O3) as Al immediately oxidises in air. It's really the porosity of the oxide coating that may adsorb any oils from the first coffee that is run through a cleaned pot. I bet that if you run an analysis across the surface of your pot you will find a lot of adsorbed organics.
Just cut up your pot and place a bit of the pot (just a one sq. cm) with the inside facing up in an electron microscope and do a light element analysis. Or use a laser ablation mass spec scan over the surface.
Mike
Mike



Comment