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Fluorine in Agricultural Soils of Southeastern Pennsylvania¹

ABSTRACT

Three fractions of fluorine were measured in a variety of Pennsylvania soils using a fluoride electrode. Mean total, soluble and resin-extractable F values for 55 samples were 377±27, 0.38±0.5 and 21.7±1.6 ppm, respectively, in a variety of soils typical of the Piedmont and Triassic Lowlands of southeastern Pennsylvania. Each of the F fractions was related to soil pH. Selected soils were leached with a standard F solution and found to retain substantial amounts of F.

¹ Contribution from the Department of Geology, University of Pennsylvania, Philadelphia, PA 19104.

² Currently Graduate Assistant, Department of Geology, Cornell University, Ithaca, NY, and Assistant Professor, University of Pennsylvania, respectively.

Received for publication June 22, 1979. Accepted for publication October 22, 1979.