A comparison was made of glass and quinhydrone electrodes for determining the pH of some Iowa soils. Particular attention was given to the "QH error" and the "QH electrode error," and also to any changes in the hydrogen-ion concentration of the soil as it is permitted to stand in contact with water. The modified bulb, silver-silver chloride type of glass electrode and the ordinary type of platinum electrode with quinhydrone were employed in making the determinations.
Proceedings of the Iowa Academy of Science
©1935 Iowa Academy of Science, Inc.
Dean, Harold L. and Walker, R. H.
"A Comparison of Glass and Quinhydrone Electrodes for Determining the pH of Some Iowa Soils,"
Proceedings of the Iowa Academy of Science, 42(1), 105-106.
Available at: https://scholarworks.uni.edu/pias/vol42/iss1/37