title: Chemiluminescence determination of nitrate with photochemical activation in a flow injection system.
abstract: A chemiluminescence flow injection system is described for the determination of nitrate, involving use of a laboratory-built flow-through photochemical reactor. Optimum analytical conditions were established. The linear range for nitrate is 7 x 10(-8)-1 x 10(-4)M. The sampling frequency is 60 samples per hour. The relative standard deviation for 1 x 10(-7), 1 x 10(-6) and 1 x 10(-5)M nitrate is 0.97, 0.84 and 0.76%, respectively. The method has been applied to the determination of nitrate in natural water samples, and recoveries of 96-103% have been attained.
authors.affiliation: Department of Chemistry, Liaocheng Teachers College, Shandong, P.R. China.
authors.forename: R
authors.initials: R
authors.lastname: Liu
authors.forename: D
authors.initials: D
authors.lastname: Liu
authors.forename: A
authors.initials: A
authors.lastname: Sun
authors.forename: G
authors.initials: G
authors.lastname: Liu