Relatively high strontium concentrations and their isotopic composition in Roman glass of the Imperial period indicate the general use of shells as carbonate raw material. Lead, iron, and barium concentrations and lead isotopes of glass of the late fourth century from Hambach and Gellep (western Germany) are conformable with the use of glass sand from Eifel rivers. Each of three pairs of six simultaneously operating Roman glasshouses in the Hambach area made its own raw glass from different quartz sands.
The study of drug metabolism reactions in an electrochemical cell enables the prediction as well as the synthesis of oxidative metabolites. In particular, reactive metabolites are directly detected using online EC/electrospray ionization mass spectrometry. Thus, the electrochemical technique is a promising tool that complements existing in vivo and in vitro techniques in drug metabolism studies.
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