  Hydrogen concentrations in thin self-supporting samples of polyphenylene
sulfide and muscovite have been determined by nuclear-elastic recoil detection
analysis of transmission layout. The analysis procedure is based only on the
database of stopping power and recoil cross section for material analysis,
without using any reference sample of known H content. For the polyphenylene
sulfide sample, the determined value of $(2.87\pm 0.26)\times 10^{22}\,{\rm
H}/$cm$^{3}$ is in good agreement with the calculated value of $3.01 \times
10^{22}\,{\rm H}/$cm$^{3}$. For the muscovite sample, the H concentration
originating each from bound water and absorbed water is uniform over the entire
thickness of the sample. The determined concentration $(9.43 \pm 0.75) \times
10^{21}$ H$/$cm$^{3}$ of the muscovite agrees excellently with the value of
$9.36 \times 10^{21}$ H$/$cm$^{3}$ obtained from other quantitative analyses
typically applied for minerals. The present results demonstrate the capability
of accurate determination of H contents in materials and minerals by
transmission ERDA.
