| 摘要 |
The change in the sample size and a change in background intensity due to the coexisting element are measured in real time to thereby automatically change a measurement time, the detection lower limit is kept constant, so that a fluorescent X-ray apparatus is provided that is capable of measuring every time in the same detection lower limit even in a case where there have existed a change in size of a sample, a change in sensitivity due to a difference in main ingredient, and a change of a magnitude in background due to an influence of a coexisting element.
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