Dissolved Trace Metal–Organic Complexes in the Lot–Garonne River System Determined Using the C18 Sep-Pak System

2006 ◽  
Vol 12 (1) ◽  
pp. 21-38 ◽  
Author(s):  
E. Lemaire ◽  
G. Blanc ◽  
J. Schäfer ◽  
A. Coynel ◽  
H. Etcheber
Keyword(s):  
Trace Metal ◽  
River System ◽  
Organic Complexes ◽  
Garonne River ◽  
Metal Organic

Role of Ecklonia radiata (C. Ag.) J. Agardh in determining trace metal availability in coastal waters. II. Trace metal speciation

1987 ◽  
Vol 38 (3) ◽  
pp. 317 ◽  
Author(s):  
HW Higgins ◽  
DJ Mackey
Keyword(s):  
Trace Metal ◽  
Coastal Waters ◽  
Metal Speciation ◽  
Complexing Agents ◽  
Metal Availability ◽  
Complexing Capacity ◽  
Organic Complexes ◽  
Nearshore Environments ◽  
Metal Organic

Detrital decomposition of the kelp E. radiata leads to the leaching of substantial amounts of trace metals and dissolved organic carbon (DOC). About 15% of the total Fe, 30% of Cu and Mn, 80% of Zn and Cd, and 25% of the DOC were released. The holdfast was more resistant to decomposition than the other tissues. The high absolute concentration of Fe in E. radiata ensured that it was the predominant metal in the leachates. The DOC released contained organic ligands that were capable of forming strong complexes with Cu, Fe and Zn, and the complexing capacity of the DOC exceeded the total amount of these metals released during leaching. The copper complexing capacity of the leachate (15 nmol mg-1 DOC) is comparable to the copper complexing capacity of Australian coastal waters. Exudation of DOC by living E. radiata plants also results in the release by ligands with strong metal complexing abliity. Fractionation of the leachates by reverse-phase chromatography confirmed that Cu, Fe and Zn were present as metal-organic complexes. These complexes were generally of high polarity. Polyphenolic compounds were an important component of the exudate but HPLC analysis indicated that other complexing agents also occurred. E. radiata beds may play a major role in regulating both the concentration and speciation of heavy metals in nearshore environments.

Interplay of coordinative and supramolecular interactions in formation of a series of metal–organic complexes bearing diverse dimensionalities

2009 ◽  
pp. 5365 ◽  
Author(s):  
Jian-Qiang Liu ◽  
Ya-Nan Zhang ◽  
Yao-Yu Wang ◽  
Jun-Cheng Jin ◽  
Elmira Kh. Lermontova ◽  
...  
Keyword(s):  
Supramolecular Interactions ◽  
Organic Complexes ◽  
Metal Organic

Syntheses, Crystal Structures, and Properties of Four Metal–Organic Complexes Based on 1,4,5,6,7,7-Hexachlorobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic Acid

2015 ◽  
Vol 15 (9) ◽  
pp. 4198-4205 ◽  
Author(s):  
Jie Yang ◽  
Xiaobin Liu ◽  
Xiaoqing Wang ◽  
Fangna Dai ◽  
Yan Zhou ◽  
...  
Keyword(s):  
Dicarboxylic Acid ◽  
Crystal Structures ◽  
Organic Complexes ◽  
Structures And Properties ◽  
Metal Organic

Lyotropic Chromonic Mesophases Derived from Metal-Organic Complexes

2018 ◽  
Vol 13 (21) ◽  
pp. 3092-3105 ◽  
Author(s):  
Qin Gao ◽  
Chao Zou ◽  
Wei Lu
Keyword(s):  
Organic Complexes ◽  
Metal Organic

Synthesis, crystal structures and sensitivity to sunlight of two Ag (I) photoresponsive metal–organic complexes

2015 ◽  
Vol 54 ◽  
pp. 45-49 ◽  
Author(s):  
Hai-Juan Du ◽  
Wen-Li Zhang ◽  
Chao-Hai Wang ◽  
Yao Li ◽  
Yun-Yin Niu ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Organic Complexes ◽  
Metal Organic
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