1934
DOI: 10.1002/jpln.19340350510
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Über die gleichzeitige Ermittlung des leichtlöslichen Phosphorsäure-Vorrats und der Festlegung der Dünger-Phosphorsäure im Boden

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Cited by 7 publications
(1 citation statement)
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“…The blue color thus formed is stable for several days. Alten, Weiland, and Loofmann {1) compared this method with others and it has been employed successfully by many other investigators (3,4,6,7,8,12,14,16,17,18). Since the earlier publications, slight changes in reagent preparation and analytical procedure have been made to eliminate the influence of silicates, arsenates, nitrates, and ferric iron.Colorless molybdenum trioxide, upon partial reduction in acid solution, yields a blue complex to which most investigators assign the formula M0O2.4M0O3.…”
mentioning
confidence: 99%
“…The blue color thus formed is stable for several days. Alten, Weiland, and Loofmann {1) compared this method with others and it has been employed successfully by many other investigators (3,4,6,7,8,12,14,16,17,18). Since the earlier publications, slight changes in reagent preparation and analytical procedure have been made to eliminate the influence of silicates, arsenates, nitrates, and ferric iron.Colorless molybdenum trioxide, upon partial reduction in acid solution, yields a blue complex to which most investigators assign the formula M0O2.4M0O3.…”
mentioning
confidence: 99%