Configuration with internally coupled valves to overcome shortcomings in the simultaneous determination of nitrite and nitrate by flow-injection analysis |
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Authors: | Bermudez B Rios A de Castro M D Valcarcel M |
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Affiliation: | Department of Analytical Chemistry, Faculty of Sciences, University of Córdoba, Córdoba, Spain. |
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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. |
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