The Carl von Ossietzky University in Oldenburg, Germany, developed a method which markedly improved the quantitative determination of hydrogen. A so-called TPR is conducted by coupling a flame ionization detector (FID) to a methanizer. Adding a certain amount of carbon monoxide (CO) and an excess amount of hydrogen immediately upstream of the FID, CO will react with hydrogen to yield methane. Methane produces a FID signal which is proportional to the amount of hydrogen in the sample.
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