| 摘要 |
A glow discharge tube (1) atomises elements constituting a sample to be measured and emits a light. A spectrometer (8) forcuses the light emitted from te discharge tube by a lens, and diffracts the focused light using a hologram grating, depending upon the frequency and detects the strength of the diffracted light by a signle PM tube. The spectrometer determines the wavelength of the diffracted light by use of a laser beam generator and a number of photodiodes. An A/D converter (31) and amplifier convert an electric signal from the spectrometer into a digital signal. The signals from the photodiodes are amplified and then passed to a computer (4) for analysis.
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