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1. Determination of Nitrate in Forages by Using Selective Ion Electrode: Collaborative Study

Author

Carlson Mp and Schneider Nr

Subjects
Reproducibility, chemistry.chemical_compound, Aqueous solution, Chromatography, Nitrate, chemistry, Electrode, Analytical chemistry, Electroanalytical method, Forage, General Chemistry, Repeatability, Diluent
Abstract

Each of 10 collaborating laboratories analyzed 4 blind duplicate pairs of forage samples for nitrate, by using a potentiometric method. Two forage controls and a 100 000 mg KNO3/L standard were also provided. Nitrate was extracted into an aqueous Al2(SO4)3 solution containing 70 mg KNO3/L and quantitated with a nitrate-selective electrode. Standards were prepared using extracting solution as diluent. Nitrate concentrations in forage samples ranged from

Published
1986
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