METHOD OF REMOVING MERCURY

摘要

PROBLEM TO BE SOLVED: To develop a new reusable mercury collecting agent for collecting mercury in a high efficiency and a method of removing mercury by using the collecting agent, by which a very small amount of the mercury to be mixed in reagents and disturb a high sensitive analysis can be removed. SOLUTION: A cross-linked chitosan having a characteristic imposing no load on an ecological system and the environment is used as a base material of the collecting agent for increasing the mercury adsorbing/collecting efficiency. The mercury collected on the collecting agent can be recovered almost quantitatively by using an eluting solution consisting of a mixed solution of hydrochloric acid with thiourea and the mercury-removed collecting agent is made usable repeatedly. COPYRIGHT: (C)2004,JPO