Estimation of copper, zinc and cobalt (with nickel) in soil extracts - Dithizone methods particularly adapted to examination of soils

[1] CLIFFORD, 1936, J ASS OFFICIAL AGR C, V19, P130

[2] Fischer H, 1937, MIKROCHIM ACTA, V1, P30

[3] FISCHER H, 1936, ANGEW CHEM, V50, P919

[4] HIBBARD P. L., 1937, Industrial and Engineering Chemistry. Analytical edition, V9, P127, DOI 10.1021/ac50107a009

[5] HUBBARD D. M., 1937, INDUST AND ENG CHEM ANAL ED, V9, P493, DOI 10.1021/ac50114a021

[6] JACOBS, 1931, J BIOL CHEM, V93, P686

[7] LINDNER, 1937, UNPUB COMMUNICATION

[8] PHILLIPS, 1928, J AM CHEM SOC, V50, P2465

[9] SANDELL EB, 1937, IND ENG CHEM ANAL ED, V9, P464

[10] STOLZE E., 1936, Bodenk. PflErnahr., V1, P115

[1] CLIFFORD, 1936, J ASS OFFICIAL AGR C, V19, P130

[2] Fischer H, 1937, MIKROCHIM ACTA, V1, P30

[3] FISCHER H, 1936, ANGEW CHEM, V50, P919

[4] HIBBARD P. L., 1937, Industrial and Engineering Chemistry. Analytical edition, V9, P127, DOI 10.1021/ac50107a009

[5] HUBBARD D. M., 1937, INDUST AND ENG CHEM ANAL ED, V9, P493, DOI 10.1021/ac50114a021

[6] JACOBS, 1931, J BIOL CHEM, V93, P686

[7] LINDNER, 1937, UNPUB COMMUNICATION

[8] PHILLIPS, 1928, J AM CHEM SOC, V50, P2465

[9] SANDELL EB, 1937, IND ENG CHEM ANAL ED, V9, P464

[10] STOLZE E., 1936, Bodenk. PflErnahr., V1, P115