| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device of monitoring the concentration of a metal for in-line measurement capable of reducing the consumption amount of a washing solution. Ž<P>SOLUTION: The device of monitoring the concentration of the metal is equipped with: a control part 20 for automatically repeating a series of operations, which are composed of the collection step for collecting a sample solution in a reservoir 13a through a sample solution supplying flow channel 14; the measuring step for injecting a part of the sample solution collected in the reservoir in a furnace 11b by a sample injecting mechanism 12 and performing the measurement of absorbance to measure the concentration of the metal contained in the sample solution; and the washing step for washing the reservoir and a movable nozzle 12b after the sample solution is injected in the furnace at a predetermined time interval. This device of monitoring the concentration of the metal is also equipped with a flow channel selecting part 21 for selecting the supply of the sample solution to the reservoir from the sample solution supplying flow channel at the time of the washing step or the supply of the washing solution to the reservoir from a washing solution supplying flow channel 15 at the time of the washing step and the sample solution is supplied at the time of in-line measurement. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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