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 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 (5) Citing Articles via Google Scholar Google Scholar Articles by Schulthess, C.P. Articles by Hu, Z. Search for Related Content PubMed Articles by Schulthess, C.P. Articles by Hu, Z. GeoRef GeoRef Citation Agricola Articles by Schulthess, C.P. Articles by Hu, Z. Related Collections Structure and Properties Soil Chemistry Soil Mineralogy

Impact of Chloride Anions on Proton and Selenium Adsorption by an Aluminum Oxide

Dep. of Plant Science, U-67, Univ. of Connecticut, Storrs, CT 06269

View larger version (24K): [in a new window]   Fig. 1. Chloride adsorption (Cl) on an Al oxide with and without 0.001 M selenate or selenite present. Chloride source was from added HCl for pH adjustments; no NaCl was added. Large circles over symbols or on lines highlight the zero point of titration for each set studied. Negative values result from autochthonous Cl- desorption

View larger version (24K): [in a new window]   Fig. 2. Adsorption of 0.001 M selenate (SeO4) on Al oxide varying in pretreatment wash at various ionic strengths

View larger version (19K): [in a new window]   Fig. 3. Adsorption of 0.001 M selenite (SeO3) on Al oxide at various ionic strengths

View larger version (27K): [in a new window]   Fig. 4. Proton adsorption (H) on an Al oxide (Lot 1) at various ionic strengths: (A) no selenate present (zero point of salt effect, ZPSE = 7.17, horizontal shift = -0.73), (B) with 0.001 M selenate present (ZPSE = 6.65, horizontal shift = 0)

View larger version (28K): [in a new window]   Fig. 5. Proton adsorption (H) on an Al oxide (Lot 2) at various ionic strengths: (A) no selenite present (zero point of salt effect, ZPSE = 7.90, horizontal shift = -0.10), (B) with 0.001 M selenite present (ZPSE = 6.90, horizontal shift = 1.60)

View larger version (28K): [in a new window]   Fig. 6. Proton adsorption (H) and Cl- adsorption (Cl) on Al oxide. No NaCl or Se was added. Solid lines are from Fig. 4A and 5A

View larger version (27K): [in a new window]   Fig. 7. Proton/anion coadsorption stoichiometries on Al oxide. No NaCl added. Anions are selenate and selenite at 0.001 M initial concentrations. Data extrapolated from Se adsorption and proton adsorption data, and corrected for Cl adsorption data (Eq. [6]) or not (Eq. [3]). Data from the pH-stat method are also shown