A COMPARISON OF HPLC ANALYSIS OF NITRATE IN SOILS WITH THE PHENOLDISULFONIC ACID AND HYDRAZINE SULFATE METHODS
- 1 February 1986
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Soil Science
- Vol. 66 (1) , 151-157
- https://doi.org/10.4141/cjss86-015
Abstract
Six Manitoba soils of varying physical and chemical compositions were used to determine the efficiency of nitrate analysis by high-performance liquid chromatography (HPLC). The nitrate was extracted with distilled water and the extract was analyzed with a reverse phase column using a mobile phase of 1:1 methanol-water, pH 3.0. In five soils, the HPLC method of nitrate analysis resulted in near 100% recovery of added nitrate. An average 90.2% recovery was obtained with the hydrazine sulfate method using sodium bicarbonate, pH 8.5, as the soil extractant. Variable recoveries were obtained with the phenoldisulfonic acid method using a silver sulfate-copper sulfate extractant. Key words: HPLC, nitrate analysis, soilThis publication has 3 references indexed in Scilit:
- Inorganic Forms of NitrogenPublished by Wiley ,2016
- Determination of nitrate and bromide in foodstuffs by high-performance liquid chromatographyJournal of Chromatography A, 1980
- Automated analysis for nitrate by hydrazine reductionWater Research, 1967