Detection methods and detection apparatus of the anions in the liquid

摘要

PPROBLEM TO BE SOLVED: To provide a detection method and an in-liquid negative ion detector which enhance monolith strength, reduce pressure loss, when the liquid is circulated, increase ion-exchange capacity per volume, and reduce power consumption. PSOLUTION: In the negative ion detector, the sample liquid is circulated through to a desalination chamber in an electro-positive ion deionization apparatus; after the positive ion is removed from the sample liquid, the negative ion is measured in the liquid; in the method for detecting the negative ion in the liquid, a positive ion exchanger filling the desalination chamber is a composite structure comprising: an organic porous body entirely or partially composed of a continuous skeletal phase and a continuous hole phase; and a plurality of particle bodies fixed to a skeletal surface of the organic porous body, and having a diameter of 4-40 μm; or a plurality of protrusion bodies formed on the skeletal surface of the organic porous body, and having a size of 4-40 μm. The average diameter of the hole is in the range of 10-150 μm in a water moist state, and the total pore volume is in the range of 0.5-5 ml/g. PCOPYRIGHT: (C)2011,JPO&INPIT