Humic Acid Complexation of Calcium and Copper

Janet G. Herlng; Francois M. M. Morel

doi:10.1021/es00175a018

Humic Acid Complexation of Calcium and Copper

Janet G. Herlng, Francois M. M. Morel

Research output: Contribution to journal › Article › peer-review

207 Scopus citations

Abstract

High-affinity metal binding by isolated humic acids has been observed for both copper and calcium in metal titration experiments. Results of titrationsof humicacids with a single metal (either calcium or copper) are consistent with a discrete ligand site model of humate-metal binding. However, copper titrations in thepresence of excess calcium do not show competitive effects predicted by such a model. Hence, different ligand sites mustbe involved in calcium and copper binding, or a binding mechanism other than discrete ligand binding must be operative.

Original language	English (US)
Pages (from-to)	1234-1237
Number of pages	4
Journal	Environmental Science and Technology
Volume	22
Issue number	10
DOIs	https://doi.org/10.1021/es00175a018
State	Published - Oct 1 1988

All Science Journal Classification (ASJC) codes

General Chemistry
Environmental Chemistry

Access to Document

10.1021/es00175a018

Cite this

@article{468a00d257b5444f920592a516b6eccd,

title = "Humic Acid Complexation of Calcium and Copper",

abstract = "High-affinity metal binding by isolated humic acids has been observed for both copper and calcium in metal titration experiments. Results of titrationsof humicacids with a single metal (either calcium or copper) are consistent with a discrete ligand site model of humate-metal binding. However, copper titrations in thepresence of excess calcium do not show competitive effects predicted by such a model. Hence, different ligand sites mustbe involved in calcium and copper binding, or a binding mechanism other than discrete ligand binding must be operative.",

author = "Herlng, {Janet G.} and Morel, {Francois M. M.}",

year = "1988",

month = oct,

day = "1",

doi = "10.1021/es00175a018",

language = "English (US)",

volume = "22",

pages = "1234--1237",

journal = "Environmental Science and Technology",

issn = "0013-936X",

publisher = "American Chemical Society",

number = "10",

}

TY - JOUR

T1 - Humic Acid Complexation of Calcium and Copper

AU - Herlng, Janet G.

AU - Morel, Francois M. M.

PY - 1988/10/1

Y1 - 1988/10/1

N2 - High-affinity metal binding by isolated humic acids has been observed for both copper and calcium in metal titration experiments. Results of titrationsof humicacids with a single metal (either calcium or copper) are consistent with a discrete ligand site model of humate-metal binding. However, copper titrations in thepresence of excess calcium do not show competitive effects predicted by such a model. Hence, different ligand sites mustbe involved in calcium and copper binding, or a binding mechanism other than discrete ligand binding must be operative.

AB - High-affinity metal binding by isolated humic acids has been observed for both copper and calcium in metal titration experiments. Results of titrationsof humicacids with a single metal (either calcium or copper) are consistent with a discrete ligand site model of humate-metal binding. However, copper titrations in thepresence of excess calcium do not show competitive effects predicted by such a model. Hence, different ligand sites mustbe involved in calcium and copper binding, or a binding mechanism other than discrete ligand binding must be operative.

UR - http://www.scopus.com/inward/record.url?scp=0024096115&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024096115&partnerID=8YFLogxK

U2 - 10.1021/es00175a018

DO - 10.1021/es00175a018

M3 - Article

C2 - 22148621

AN - SCOPUS:0024096115

SN - 0013-936X

VL - 22

SP - 1234

EP - 1237

JO - Environmental Science and Technology

JF - Environmental Science and Technology

IS - 10

ER -

Humic Acid Complexation of Calcium and Copper

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this