Gas Chromatograph studies were performed in São Paulo,
Brazil, and compared to Osaka, Japan, which does not burn ethanol fuel.
Gas Chromatograph studies were performed of ambient air in São Paulo Brazil,
and compared to Osaka Japan, which does not burn ethanol fuel.
Gas Chromatography is a largely automated type of chemical analysis you can do with a sophisticated piece of laboratory equipment called, not surprisingly,
a gas Chromatograph machine.