HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Frink, C. R. Search for Related Content PubMed Articles by Frink, C. R. GeoRef GeoRef Citation Agricola Articles by Frink, C. R.

Fractionation of Phosphorus in Lake Sediments: Analytical Evaluation¹

ABSTRACT

Methods for the fractionation of P in soils were evaluated in the fractionation of P in lake sediments. Both Al-P and Fe-P may be determined readily and precisely by the Chang and Jackson procedure. Reductant-soluble P was more difficult: modifications of a citrate oxidation procedure utilizing KMnO₄ produced an acceptable method. Large amounts of Fe in the Ca-P extracts caused low results, but this was overcome by limiting the aliquot size. Organic P determined by difference between total and inorganic P was not related to the organic matter content of the sediments. An alternative measure of inorganic P, obtained by summing the inorganic P fractions, yielded values for organic P which were correlated with organic matter.

¹ Contribution from The Connecticut Agr. Exp. Sta., New Haven.

² Soil Chemist.

Received for publication August 29, 1968. Accepted for publication January 16, 1969.