title: [Flow injection analysis of 3,4-dihydroxybenzoic acid with inhibited chemiluminescent detection].
abstract: It was found that 3,4-dihydroxybenzoic acid (protocatechuric acid) inhibited chemiluminescence of luminol-H2O2 reaction catalyzed by Co2+. On this basis, a flow injection method has been developed for the determination of protocatechuric acid. The method is simple, convenient and sensitive with detection limit of 2.7 x 10(-7) mol/L and is effective to determine protocatechuric acid in the range of 1 x 10(-6)-1 x 10(-5) mol/L. The variation coefficient of eleven determinations for 8 x 10(-6) mol/L protocatechuric acid is 2.3%.
authors.affiliation: Department of Chemistry, University of Science and Technology of China, 230026 Hefei.
authors.forename: H
authors.initials: H
authors.lastname: Cui
authors.forename: H
authors.initials: H
authors.lastname: Jiang
authors.forename: R
authors.initials: R
authors.lastname: Meng
authors.forename: C
authors.initials: C
authors.lastname: He
authors.forename: H
authors.initials: H
authors.lastname: Zhao