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.