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1970•Soil Science Society of America JournalRequires access

Effects of Different Aqueous Buffers on the Zinc Extractability of Dithizone

R. I. Pietz, Russell Adams, John M. MacGregor

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Abstract

Abstract The effect of several aqueous buffers on the Zn extractability of dithizone was examined on three Minnesota soils: Zimmerman s, Brainerd sl, and Blue Earth sicl. The five aqueous solutions used with dithizone were water, 1N NH4OAc, 1N NaOAc, 1N Ba(OAc)2, and 1N Ca(OAc)2. Dithizone‐1N NH4OAc extracted the greatest amounts of Zn and dithizone‐water extracted the least. The data indicated that the variation in dithizone extractable Zn with different buffers may be related to the buffering capacity of the aqueous solutions, the NH4 ion, and the soil organic matter present.

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Abstract The effect of several aqueous buffers on the Zn extractability of dithizone was examined on three Minnesota soils: Zimmerman s, Brainerd sl, and Blue Earth sicl. The five aqueous solutions used with dithizone were water, 1N NH4OAc, 1N NaOAc, 1N Ba(OAc)2, and 1N Ca(OAc)2. Dithizone‐1N NH4OAc extracted the greatest amounts of Zn and dithizone‐water extracted the least. The data indicated that the variation in dithizone extractable Zn with different buffers may be related to the buffering capacity of the aqueous solutions, the NH4 ion, and the soil organic matter present.

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Available abstract

Abstract The effect of several aqueous buffers on the Zn extractability of dithizone was examined on three Minnesota soils: Zimmerman s, Brainerd sl, and Blue Earth sicl. The five aqueous solutions used with dithizone were water, 1N NH4OAc, 1N NaOAc, 1N Ba(OAc)2, and 1N Ca(OAc)2. Dithizone‐1N NH4OAc extracted the greatest amounts of Zn and dithizone‐water extracted the least. The data indicated that the variation in dithizone extractable Zn with different buffers may be related to the buffering capacity of the aqueous solutions, the NH4 ion, and the soil organic matter present.

Key concepts: Dithizone, Aqueous solution, Chemistry, Zinc, Nuclear chemistry, Inorganic chemistry, Soil water, Environmental chemistry

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