A mercury-containing material, a method for producing the same and a
fluorescent lamp using the same that can enclose a minimal amount of
mercury in a glass bulb precisely, prevent flaws in a fluorescent coating
while suppressing a noise during a lamp transportation, and prevent
deterioration in appearance are provided. A surface of liquid mercury is
coated with a continuous film made of metal oxide or metal complex oxide
by dipping the mercury in a metal alkoxide solution and then heating the
mercury on which the metal alkoxide solution adheres. Accordingly, the
minimal amount of the mercury can be enclosed in the fluorescent lamp
precisely, thus achieving friendliness to the environment. It also is
possible to prevent flaws in the fluorescent coating while suppressing a
noise during the lamp transportation and further to prevent deterioration
in appearance.