Reply to the ‘Comment on “A photoelectron spectroscopy study of lava stones”’ by M. Zappia and A. Nicoletti, Anal. Methods, 2016, 8, DOI: 10.1039/c3ay41326h

Abstract

Both the Environmental Protection Agency and the Food and Drug Administration recommend a concentration of manganese in drinking water not in excess of 0.05 mg L⁻¹. Drinking water delivered to cities around the Etna volcano as well as wells that deliver water to some cities of West Sicily show a high concentration of manganese. Excess of manganese can lead to manganism, a disorder that strongly resembles Parkinson's disease.