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Affiliation(s)

Department of Applied Chemistry, School of Advanced Engineering, Kogakuin University, Nakano-machi 2665-1, Hachioji-City 192-0015, Tokyo, Japan

ABSTRACT

A simple rapid method for the determination of hydrogen molecule in water is developed. This method is based on the redox reaction of ferric ion and hydrogen molecule in the presence of colloidal platinum. The released ferrous ion was developed with o-phenanthroline and spectrophotometrically measured at 510 nm. The suitable pH condition of redox reaction of ferric ion and hydrogen molecule is pH 2. And 1 mol of molecular hydrogen reduced 2 mol of ferric ion. The molar coefficient for hydrogen molecule is 2.25 × 104 L⋅mol-1⋅cm-1. The stability of hydrogen water was also discussed.

KEYWORDS

Molecular hydrogen, colloidal platinum, ferroine, spectrophotometry.

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