Abstract
A hot vacuum extraction technique for the determination of hydrogen in metal and alloy samples has been standardised. After measuring the total pressure of the evolved gases, individual hydrogen and deuterium intensities are measured using an on-line quadrupole mass spectrometer. Synthetic mixtures of H2 and D2, in known concentrations, have been analysed by QMS and an analytical expression correlating the measured [D2]/[HD] intensity ratio with the mole fraction of deuterium in the synthetic mixture has been arrived at. The precision and accuracy in the measurement of hydrogen is about 10% at 50 ppmw level.
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Sayi, Y.S., Ramakumar, K.L., Prasad, R. et al. Determination of H2 and D2 content in metals and alloys using hot vacuum extraction. J Radioanal Nucl Chem 230, 5–9 (1998). https://doi.org/10.1007/BF02387438
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DOI: https://doi.org/10.1007/BF02387438