A COMPARISON OF METHODS OF DETERMINING NITROGEN FRACTIONS IN SOILS

[1] GREENSTEIN JP, 1961, CHEM AMINO ACIDS, V2, P1299

[2] KEENEY D. R., 1964, SOIL SCI SOC AMER PROC, V28, P653

[3] MacFadyen DA, 1944, J BIOL CHEM, V153, P507

[4] QUANTITATIVE CHROMATOGRAPHIC METHODS .5. AN IMPROVED NINHYDRIN-HYDRINDANTIN REAGENT [J]. CANADIAN JOURNAL OF BIOCHEMISTRY AND PHYSIOLOGY, 1961, 39 (02): : 417 - &

[5] THE CHEMISTRY OF NINHYDRIN [J]. CHEMICAL REVIEWS, 1960, 60 (01) : 39 - 51

[6] FRACTIONATION OF SOIL NITROGEN AND FACTORS AFFECTING DISTRIBUTION [J]. SOIL SCIENCE, 1951, 71 (04) : 253 - 267

[7] SOBEL AE, 1945, J BIOL CHEM, V161, P99

[8] SOWDEN F. J., 1959, SOIL SCI, V88, P138, DOI 10.1097/00010694-195988030-00004

[9] STEVENSON F. J., 1957, SOIL SCI SOC AMER PROC, V21, P283

[10] STEWART B. A., 1963, SOIL SCI SOC AMER PROC, V27, P302

[1] GREENSTEIN JP, 1961, CHEM AMINO ACIDS, V2, P1299

[2] KEENEY D. R., 1964, SOIL SCI SOC AMER PROC, V28, P653

[3] MacFadyen DA, 1944, J BIOL CHEM, V153, P507

[4] QUANTITATIVE CHROMATOGRAPHIC METHODS .5. AN IMPROVED NINHYDRIN-HYDRINDANTIN REAGENT [J]. CANADIAN JOURNAL OF BIOCHEMISTRY AND PHYSIOLOGY, 1961, 39 (02): : 417 - &

[5] THE CHEMISTRY OF NINHYDRIN [J]. CHEMICAL REVIEWS, 1960, 60 (01) : 39 - 51

[6] FRACTIONATION OF SOIL NITROGEN AND FACTORS AFFECTING DISTRIBUTION [J]. SOIL SCIENCE, 1951, 71 (04) : 253 - 267

[7] SOBEL AE, 1945, J BIOL CHEM, V161, P99

[8] SOWDEN F. J., 1959, SOIL SCI, V88, P138, DOI 10.1097/00010694-195988030-00004

[9] STEVENSON F. J., 1957, SOIL SCI SOC AMER PROC, V21, P283

[10] STEWART B. A., 1963, SOIL SCI SOC AMER PROC, V27, P302