title: Determination of manganese in Chinese tea leaves by a catalytic kinetic spectrophotometric method.
abstract: The catalytic effect of manganese(II) on the oxidation of Rhodamine B with potassium periodate in the presence of 1,10-phenanthroline in acetic acid-sodium acetate was studied. A catalytic kinetic spectrophotometric method for determination of manganese(II) was developed. Manganese in the range 0.1-5.0 ng ml-1 can be determined, and the detection limit is 0.02 ng ml-1. Manganese in Chinese tea leaves was successfully determined.
authors.affiliation: Department of Chemistry, Liaocheng Teachers College, Shandong, China.
authors.forename: R
authors.initials: R
authors.lastname: Liu
authors.forename: A
authors.initials: A
authors.lastname: Zhang
authors.forename: D
authors.initials: D
authors.lastname: Liu
authors.forename: S
authors.initials: S
authors.lastname: Wang
mesh_terms: D002384:Catalysis; D002681:China; D007700:Kinetics; D008345:Manganese / Q000032:analysis*; D013054:Spectrophotometry, Atomic; D013056:Spectrophotometry, Ultraviolet; D013662:Tea / Q000737:chemistry*
chemical_list: D013662:Tea; D008345:Manganese