An improved hydrazine reduction method for the automated determination of low nitrate levels in freshwater
作者： M.T. Downes
DOI: 10.1016/0043-1354(78)90177-X
关键词: Nitrite 、 Catalysis 、 Hydrazine 、 Inorganic chemistry 、 Cadmium 、 Natural water 、 Hydrazine sulphate 、 Chemistry 、 Nitrate
摘要: Abstract An automated nitrate determination is described in which reduced to nitrite with hydrazine sulphate under alkaline conditions the presence of Cu 2+ and Zn . Interferances encountered natural water samples were eliminated by addition catalyst solution. The method suitable for low NO 3 −N concentrations compares favourably manual copperised cadmium technique freshwater containing 10–800 mg m −3 −N. also linear at below 10 N standard deviations (S.D.) blanks 2 0.013 0.06 respectively an analysis rate 30 h −1
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