A wide variety of organic chemicals (contaminants) was efficiently decomposed in a short time, it can be separated and recovered as an insoluble matter, the primary purpose of providing a simple method.
Specific metal compound in water or soil containing organic chemicals and ionic transition metal compound was added, followed by performing light irradiation, a variety of organic chemicals and efficiently decomposed, can be insolubilized, harmless the reduction is organic chemicals by separating and recovering, it is possible to purify the contaminated material.