REDUCTION OF NITRATE PRIOR TO KJELDAHL DIGESTION

[1] The determination of nitrogen in heavy clay soils [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1925, 15 : 454 - 459

[2] Bremner J.M., 1965, METHODS SOIL ANAL PA, P1149

[3] Cope WC., 1916, J IND ENG CHEM, V8, P592

[4] GEHRKE CW, 1972, J ASSOC OFF ANA CHEM, V55, P467

[5] COMPARISON AND EVALUATION OF METHODS FOR INCLUDING NITRATE IN TOTAL NITROGEN DETERMINATION OF SOILS [J]. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 1972, 23 (03) : 275 - +

[6] DEVARDA ALLOY METHOD FOR TOTAL NITROGEN DETERMINATION [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1981, 45 (05) : 852 - 855

[7] PREPARATION OF STANDARD CHROMOUS SULFATE OR CHROMOUS CHLORIDE SOLUTIONS OF DETERMINATE CONCENTRATION [J]. ANALYTICAL CHEMISTRY, 1948, 20 (05) : 425 - 428

[8] VOLUMETRIC DETERMINATION OF NITRATE ION - BY REDUCTION WITH CHROMOUS ION [J]. ANALYTICAL CHEMISTRY, 1949, 21 (05) : 622 - 625

[9] OLSEN C, 1929, COMPT REND TRAV LAB, V17

[10] PRUDEN G, 1984, FERT RES

[1] The determination of nitrogen in heavy clay soils [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1925, 15 : 454 - 459

[2] Bremner J.M., 1965, METHODS SOIL ANAL PA, P1149

[3] Cope WC., 1916, J IND ENG CHEM, V8, P592

[4] GEHRKE CW, 1972, J ASSOC OFF ANA CHEM, V55, P467

[5] COMPARISON AND EVALUATION OF METHODS FOR INCLUDING NITRATE IN TOTAL NITROGEN DETERMINATION OF SOILS [J]. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 1972, 23 (03) : 275 - +

[6] DEVARDA ALLOY METHOD FOR TOTAL NITROGEN DETERMINATION [J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1981, 45 (05) : 852 - 855

[7] PREPARATION OF STANDARD CHROMOUS SULFATE OR CHROMOUS CHLORIDE SOLUTIONS OF DETERMINATE CONCENTRATION [J]. ANALYTICAL CHEMISTRY, 1948, 20 (05) : 425 - 428

[8] VOLUMETRIC DETERMINATION OF NITRATE ION - BY REDUCTION WITH CHROMOUS ION [J]. ANALYTICAL CHEMISTRY, 1949, 21 (05) : 622 - 625

[9] OLSEN C, 1929, COMPT REND TRAV LAB, V17

[10] PRUDEN G, 1984, FERT RES