title: Configuration with internally coupled valves to overcome shortcomings in the simultaneous determination of nitrite and nitrate by flow-injection analysis.
abstract: A configuration with internally coupled valves and a reductant column located in the loop of the secondary valve is proposed for the simultaneous determination of nitrite and nitrate. Depending on the column characteristics, a washing stream flowing in the opposite direction to the sample may or may not be required. The washing step may conveniently be performed by use of the proposed configuration.
authors.affiliation: Department of Analytical Chemistry, Faculty of Sciences, University of Córdoba, Córdoba, Spain.
authors.forename: B
authors.initials: B
authors.lastname: Bermudez
authors.forename: A
authors.initials: A
authors.lastname: Rios
authors.forename: M D
authors.initials: MD
authors.lastname: de Castro
authors.forename: M
authors.initials: M
authors.lastname: Valcarcel