Amino Acids in Soil. I. Water-soluble Acids.

Abstract
Free amino acids in the H-layer of a pine forest soil profile from Western Norway were studied by partition chromatography technique with circular filter papers as the stationary phase. The soil samples were first extracted with ether and then (after drying) with cold water, and the water extracts were concentrated in vacuo. 25 ninhydrin-positive spots were observed. Of these 22 were identified and 14 were quantitatively determined.