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1-Nitropyrene was converted by photolysis to a new compound, deep red needles, which was identified to be 1-nitro-2-hydroxypyrene.
For measuring the exact distribution of metal atoms in the flame, HITACHI 207 atomic absorption spectrophotometer was modified to a single light path with a smaller diameter of the light beam. Using… (More)
The spectral line profiles of emission lines from hollow cathode lamps and an inductively coupled argon plasma have been measured by using a wavelength-modulation echelle monochromator. The data for… (More)
When a solution of indium dissolved in HClO4 was aspirated into an air-acetylene flame, molecular absorption spectrum of InCl in the flame was observed by molecular flame absorption spectroscopy.… (More)
Absorption spectra of sodium halides have been observed in the air-acetyrene flame. Those spectra show the meaningful absorptions with hyperfine structure in the ultraviolet reagion. The absorptions… (More)
Molecular absorption spectrum of InCl was observed in the flame for the first time at the wavelengths near 2670 A, when 0,2 M indium in 2 M HCl aqueous solution was aspirated into the air-acetylene… (More)
Nitrate reductase activity dissolved in natural water was detected for the first time. The characteristics of this enzymatic activity were compared with the commercial nitrate reductase in terms of… (More)