| abstract |
[PROBLEMS] Anionic surfactant which facilitates peak integration by measuring anionic surfactant after eluting an interfering component eluting as a main component using high performance liquid chromatography An agent measuring device is provided. SOLUTION: The sample is captured and concentrated by a concentration column of a sample valve, and an anionic surfactant in the captured and concentrated sample is injected into a separation column by an eluent, In the anionic surfactant measuring device comprising a detector for detecting the separated anionic surfactant, prior to the detection of the anionic surfactant, a flush liquid was flowed into the concentration column, and the trapped liquid was collected. Interfering components other than the anionic surfactant were eluted. |