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 Related articles in JEQ 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 ISI Web of Science (13) Citing Articles via Google Scholar Google Scholar Articles by Nolan, A. L. Articles by McLaughlin, M. J. Search for Related Content PubMed PubMed Citation Articles by Nolan, A. L. Articles by McLaughlin, M. J. Agricola Articles by Nolan, A. L. Articles by McLaughlin, M. J. Related Collections Heavy Metals Plant and Soil Interactions Soil Pollution

Prediction of Zinc, Cadmium, Lead, and Copper Availability to Wheat in Contaminated Soils Using Chemical Speciation, Diffusive Gradients in Thin Films, Extraction, and Isotopic Dilution Techniques

^a CSIRO Land and Water, PMB 2, Glen Osmond, SA 5064, Australia
^b Soil and Land Systems, School of Earth and Environmental Sciences, University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia
^c Current address: National Measurement Institute, PO Box 385, Pymble, NSW 2073, Australia

View larger version (30K): [in a new window]   Fig. 1. Dependence of log concentration of Zn in plant tissue on the log of (a) effective Zn concentration, CE, before growth, (b) effective Zn concentration, CE, after growth, (c) soil solution Zn, before growth, (d) soil solution Zn, after growth, (e) free Zn2+ activity, (f) CaCl2–extracted Zn, (g) Zn E value, and (h) total soil Zn. The quadratic regression equations and regression coefficients are shown.

View larger version (30K): [in a new window]   Fig. 2. Dependence of log concentration of Cd in plant tissue on the log of (a) effective Cd concentration, CE, before growth, (b) effective Cd concentration, CE, after growth, (c) soil solution Cd, before growth, (d) soil solution Cd, after growth, (e) free Cd2+ activity, (f) CaCl2–extracted Cd, (g) Cd E value, and (h) total soil Cd. The quadratic regression equations and regression coefficients are shown.

View larger version (26K): [in a new window]   Fig. 3. Dependence of log concentration of Pb in plant tissue on the log of (a) effective Pb concentration, CE, before growth, (b) effective Pb concentration, CE, after growth, (c) soil solution Pb, before growth, (d) soil solution Pb, after growth, (e) free Pb2+ activity, (f) CaCl2–extracted Pb, and (g) total soil Pb. The quadratic regression equations and regression coefficients are shown. Only nine soils are included as Kapunda soils were below Pb detection limit for some measurements. The E values were not determined for Pb (no suitable radioisotope available).

View larger version (26K): [in a new window]   Fig. 4. Dependence of log concentration of Cu in plant tissue on the log of (a) effective Cu concentration, CE, before growth, (b) effective Cu concentration, CE, after growth, (c) soil solution Cu, before growth, (d) soil solution Cu, after growth, (e) CaCl2–extracted Cu, (f) Cu E value, and (g) total soil Cu. The quadratic regression equations and regression coefficients are shown. Free Cu2+ activities were not determined (below method detection limit).

View larger version (15K): [in a new window]   Fig. 5. Plots of plant yields as dry weight versus (a) Zn CE before growth, and (b) free Zn2+ activities on logarithmic scales. The solid line represents the calculated dose–response curves.