Jnc Corporation

Xiaomao Xie

Noriyuki Ohnishi

Hideyuki Hata

Yuki Takahashi

The present invention provides a method for efficiently separating cesium ions in a short time from an aqueous solution with the number of human working steps being reduced as much as possible and recovering the cesium ions, and an apparatus therefor. Cesium ions in an aqueous solution are removed by preparing a cesium ion-containing magnetic particle in a cesium-containing aqueous solution and filtering or magnetically separating the magnetic particle.

Method for removing cesium ions from water

It is intended to provide a method capable of simply aggregating magnetic particles having a surface modified with a thermoresponsive polymer at a given temperature without heating or cooling an aqueous solution containing the magnetic particles, and a separation method and a detection method of a substance to be detected in a sample using the method. The method of separating a substance to be detected from a sample includes the steps of: mixing an adsorbent and the sample in an aqueous solution to adsorb the substance to be detected on the adsorbent, aggregating the adsorbent by changing a salt concentration in the aqueous solution; and collecting the adsorbent from the aqueous solution by a magnetic force, wherein said adsorbent comprises a magnetic particle of an average particle size of 50 to 1000 nm, a surface of which is modified with a thermoresponsive polymer and is immobilized with a substance having an affinity for the substance to be detected.

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Chiba, Japan

Xiaomao Xie