FIELD-TESTS FOR FERROUS IRON AND FERRIC-ORGANIC COMPLEXES (ON EXCHANGE SITES OR IN WATER-SOLUBLE FORMS) IN SOILS

[1] DETERMINATION OF FERROUS IRON IN NATURAL-WATERS WITH 2,2' BIPYRIDYL [J]. LIMNOLOGY AND OCEANOGRAPHY, 1977, 22 (04) : 753 - 760

[2] HOFFER G. N., 1945, Better Crops with Plant Food, V29, P6

[3] Jackson M.L., 1958, SOIL CHEM ANAL

[4] AN ACID-FREE BATHOPHENANTHROLINE METHOD FOR MEASURING DISSOLVED FERROUS IRON IN LAKE WATER [J]. WATER RESEARCH, 1969, 3 (10) : 743 - &

[5] INFLUENCE OF LIGHT AND ACID ON MEASUREMENT OF FERROUS IRON IN LAKE WATER [J]. LIMNOLOGY AND OCEANOGRAPHY, 1967, 12 (03) : 437 - &

[6] RICHARDSON JL, 1979, SOIL SCI SOC AM J, V43, P552, DOI 10.2136/sssaj1979.03615995004300030024x

[7] Schwertmann U., 1977, Minerals in Soil Environments (Dixon, J.B.

[8] Weed, S.B., Editors)., P145

[9] Stumm, 1960, J AM WATER WORKS ASS, V52, P1567, DOI 10.1002/j.1551-8833.1960.tb00631.x

[10] Theis T. L., 1973, TRACE METALS METAL O

[1] DETERMINATION OF FERROUS IRON IN NATURAL-WATERS WITH 2,2' BIPYRIDYL [J]. LIMNOLOGY AND OCEANOGRAPHY, 1977, 22 (04) : 753 - 760

[2] HOFFER G. N., 1945, Better Crops with Plant Food, V29, P6

[3] Jackson M.L., 1958, SOIL CHEM ANAL

[4] AN ACID-FREE BATHOPHENANTHROLINE METHOD FOR MEASURING DISSOLVED FERROUS IRON IN LAKE WATER [J]. WATER RESEARCH, 1969, 3 (10) : 743 - &

[5] INFLUENCE OF LIGHT AND ACID ON MEASUREMENT OF FERROUS IRON IN LAKE WATER [J]. LIMNOLOGY AND OCEANOGRAPHY, 1967, 12 (03) : 437 - &

[6] RICHARDSON JL, 1979, SOIL SCI SOC AM J, V43, P552, DOI 10.2136/sssaj1979.03615995004300030024x

[7] Schwertmann U., 1977, Minerals in Soil Environments (Dixon, J.B.

[8] Weed, S.B., Editors)., P145

[9] Stumm, 1960, J AM WATER WORKS ASS, V52, P1567, DOI 10.1002/j.1551-8833.1960.tb00631.x

[10] Theis T. L., 1973, TRACE METALS METAL O