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

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (9) Citing Articles via Google Scholar Google Scholar Articles by Uusitalo, R. Articles by Turtola, E. Search for Related Content PubMed PubMed Citation Articles by Uusitalo, R. Articles by Turtola, E. Agricola Articles by Uusitalo, R. Articles by Turtola, E. Related Collections Water Quality Ecological Risk Assessment Water Pollution Phosphorus

Determination of Redox-Sensitive Phosphorus in Field Runoff without Sediment Preconcentration

MTT Agrifood Research Finland, FIN-31600 Jokioinen, Finland

View larger version (34K): [in a new window]   Fig. 1. Changes in Eh, pH, total dissolved phosphorus (TDP), and soluble Fe in five runoff samples from two fine-textured soils (Sj, Sjökulla; Jo, Jokioinen) as a function of time after addition of bicarbonate and dithionite (BD); time-zero subsample is the original sample without BD addition.

View larger version (16K): [in a new window]   Fig. 2. Particulate phosphorus solubilized in chemical reduction (BD-PP) as a function of the concentration of particulate phosphorus (PP) in runoff from the Jokioinen field, n = 79.

View larger version (15K): [in a new window]   Fig. 3. Concentration of phosphorus determined after bicarbonate–dithionite extraction, filtration, and digestion of the filtrate (BD-Pt) as related to total phosphorus (TP) concentration in the 10 runoff samples studied; mean of 5 replications; the error bars represent 95% confidence intervals. The line represents the BD-Pt concentration as predicted from the equation in Fig. 2 (redox-sensitive particulate phosphorus [BD-PP] was calculated from the particulate phosphorus concentration and added to the measured total dissolved phosphorus [TDP] to give BD-Pt).