| 摘要 |
A flame atomic absorption spectrophotometer of the present invention includes: a gas selector for selecting the fuel gas from a plurality of reserve fuel gases and/or the assist gas from a plurality of reserve assist gases; a fuel gas flow controller for changing the flow rate of the fuel gas; an assist gas flow controller for changing the flow rate of the assist gas; a memory for storing data of an optimal flow rate of the fuel gas and an optimal flow rate of the assist gas for stabilizing the flame in a period spanning the time when the fuel gas and/or the assist gas is changed by the gas selector, where the data is prepared for every possible changing combination of the reserve fuel gas and the reserve assist gas; and a controller for changing the flow rate of the fuel gas and the flow rate of the assist gas according to data read out from the memory corresponding to the changing combination of the fuel gas and the assist gas before the fuel gas and/or the assist gas is changed by the gas selector, and for further changing the flow rate of the fuel gas and the flow rate of the assist gas to optimize the analysis using the flame after the fuel gas and/or the assist gas is changed by the gas selector.
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