title: Determination of soluble bromine in an extra-high-pressure mercury discharge lamp by sodium hydroxide decomposition-suppressed ion chromatography.
abstract: We have established a simple method for assaying the quantity of soluble bromine in the discharge tubes of an extra-high-pressure mercury discharge lamp. Each discharge tube is destroyed in 5 ml of 10 mM sodium hydroxide, and the recovered sodium hydroxide solution is analyzed by suppressed-ion chromatography using gradient elution. We have clarified that this method can assay less than 1 microg of soluble bromine in a discharge tube.
authors.affiliation: Lighting Company, Matsushita Electric Industrial Co., Ltd., 1-1, Saiwai-cho, Takatsuki 569-1193, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Mitsumata
authors.forename: Toshio
authors.initials: T
authors.lastname: Mori
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Maeda
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Kita
authors.forename: Osamu
authors.initials: O
authors.lastname: Kohatsu