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Adsorption of Suwannee River fulvic acid on aluminum oxyhydroxide surfaces: an in situ ATR-FTIR study.
Langmuir. 2004 Jul 06; 20(14):5655-8.L

Abstract

The adsorption of Suwannee River fulvic acid (SRFA) on boehmite, gamma-AlO(OH), has been examined by both macroscopic adsorption and in situ ATR-FTIR spectroscopic techniques. At a SRFA concentration approaching surface saturation (F = 5.3 micromol m(-2)), adsorption is at a maximum at low pH and decreases as pH is increased. The ATR-FTIR spectral features of adsorbed SRFA are very similar to those measured approximately 1-2 pH units higher in solution, indicating that (i) the SRFA appears to be predominantly adsorbed at the boehmite/water interface in an outer-sphere complexation mode and (ii) the positively charged boehmite/water interface stabilizes SRFA molecules against protonation at low pH.

Authors+Show Affiliations

Surface & Aqueous Geochemistry Group, Department of Geological & Environmental Sciences, Stanford University, Stanford, California 94305-2115, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16459573

Citation

Yoon, Tae Hyun, et al. "Adsorption of Suwannee River Fulvic Acid On Aluminum Oxyhydroxide Surfaces: an in Situ ATR-FTIR Study." Langmuir : the ACS Journal of Surfaces and Colloids, vol. 20, no. 14, 2004, pp. 5655-8.
Yoon TH, Johnson SB, Brown GE. Adsorption of Suwannee River fulvic acid on aluminum oxyhydroxide surfaces: an in situ ATR-FTIR study. Langmuir. 2004;20(14):5655-8.
Yoon, T. H., Johnson, S. B., & Brown, G. E. (2004). Adsorption of Suwannee River fulvic acid on aluminum oxyhydroxide surfaces: an in situ ATR-FTIR study. Langmuir : the ACS Journal of Surfaces and Colloids, 20(14), 5655-8.
Yoon TH, Johnson SB, Brown GE. Adsorption of Suwannee River Fulvic Acid On Aluminum Oxyhydroxide Surfaces: an in Situ ATR-FTIR Study. Langmuir. 2004 Jul 6;20(14):5655-8. PubMed PMID: 16459573.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Adsorption of Suwannee River fulvic acid on aluminum oxyhydroxide surfaces: an in situ ATR-FTIR study. AU - Yoon,Tae Hyun, AU - Johnson,Stephen B, AU - Brown,Gordon E,Jr PY - 2006/2/8/pubmed PY - 2007/3/21/medline PY - 2006/2/8/entrez SP - 5655 EP - 8 JF - Langmuir : the ACS journal of surfaces and colloids JO - Langmuir VL - 20 IS - 14 N2 - The adsorption of Suwannee River fulvic acid (SRFA) on boehmite, gamma-AlO(OH), has been examined by both macroscopic adsorption and in situ ATR-FTIR spectroscopic techniques. At a SRFA concentration approaching surface saturation (F = 5.3 micromol m(-2)), adsorption is at a maximum at low pH and decreases as pH is increased. The ATR-FTIR spectral features of adsorbed SRFA are very similar to those measured approximately 1-2 pH units higher in solution, indicating that (i) the SRFA appears to be predominantly adsorbed at the boehmite/water interface in an outer-sphere complexation mode and (ii) the positively charged boehmite/water interface stabilizes SRFA molecules against protonation at low pH. SN - 0743-7463 UR - https://www.unboundmedicine.com/medline/citation/16459573/Adsorption_of_Suwannee_River_fulvic_acid_on_aluminum_oxyhydroxide_surfaces:_an_in_situ_ATR_FTIR_study_ L2 - https://doi.org/10.1021/la0499214 DB - PRIME DP - Unbound Medicine ER -