| 摘要 |
PURPOSE:To measure a quantity of a particular component in a sample solution by an apparatus wherein a column filled with solid matter is used in a flow injection mechanism instead of addition of a reagent solution to measure a dissolved amount of the solid component contained in the effluent. CONSTITUTION:A sample is first sent out of a liquid tank, etc. by means of a feeding tube 1 and feeding pump 2, and then divided at a branching point 3 into two streams one of which passes through a feeding tube 4 and a reference cell 5a of a colorimeter in a detecting section, and the other of which passes through a feeding tube 6, four- way selector 7, feeding tube 8 and a four-way selector 9 and is then discharged after passing a sample cell 5b. When the selectors 7, 9 are switched simultaneously, the sample now flows into the cell 5b through the tube 6, selector 7, column 7 and the selector 9. By keeping such a state for a certain time, a cleaning solution initially filled in the column 12 is discharged and then the sample dissolves a certain quantity of the solid in the column which is determined by a flow rate, while coming into a stationary state. It thus becomes possible to obtain concentration of a particular component in the sample based on the dissolved amount of the solid, by measuring the difference in absorbance between the cells 5a and 5b with a not shown colorimetric mechanism. |
