Improved Diffusive Gradients in Thin Films (DGT) Measurement of Total Dissolved Inorganic Arsenic in Waters and Soils Using a Hydrous Zirconium Oxide Binding Layer

2014 ◽  
Vol 86 (6) ◽  
pp. 3060-3067 ◽  
Author(s):  
Qin Sun ◽  
Jing Chen ◽  
Hao Zhang ◽  
Shiming Ding ◽  
Zhu Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Zirconium Oxide ◽  
Inorganic Arsenic ◽  
Hydrous Zirconium Oxide ◽  
Dissolved Inorganic Arsenic ◽  
Diffusive Gradients ◽  
Hydrous Zirconium

scholarly journals Speciation of Dissolved Inorganic Arsenic by Diffusive Gradients in Thin Films: Selective Binding of AsIIIby 3-Mercaptopropyl-Functionalized Silica Gel

2011 ◽  
Vol 83 (21) ◽  
pp. 8293-8299 ◽  
Author(s):  
William W. Bennett ◽  
Peter R. Teasdale ◽  
Jared G. Panther ◽  
David T. Welsh ◽  
Dianne F. Jolley
Keyword(s):  
Thin Films ◽  
Silica Gel ◽  
Inorganic Arsenic ◽  
Functionalized Silica ◽  
Selective Binding ◽  
Dissolved Inorganic Arsenic ◽  
Diffusive Gradients

In Vitro Adsorption of Oxalic Acid and Glyoxylic Acid onto Activated Charcoal, Resins and Hydrous Zirconium Oxide

1982 ◽  
Vol 5 (1) ◽  
pp. 33-36 ◽  
Author(s):  
R. Scholtens ◽  
J. Scholten ◽  
H.W.M. de Koning ◽  
J. Tijssen ◽  
H.W.M. ten Hoopen ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Activated Charcoal ◽  
Zirconium Oxide ◽  
Ionic Composition ◽  
Plasma Concentrations ◽  
Glyoxylic Acid ◽  
Primary Hyperoxaluria ◽  
Hydrous Zirconium Oxide ◽  
Hydrous Zirconium

Patients suffering from primary hyperoxaluria show elevated plasma concentrations of oxalic acid and glyoxylic acid. The in vitro adsorption of these compounds onto activated charcoal, a series of neutral and ion exchange resins and onto hydrous zirconium oxide has been investigated. Hydrous zirconium oxide was the most effective sorbent studied for the removal of both oxalic acid and glyoxylic acid. In batch experiments, the zirconium oxide was capable of binding 5.5 μ mol oxalic acid and 8 μ mol glyoxylic acid per gram sorbent using 0.5 gram sorbent and 50 ml of solutions with initial concentrations of 100 μ mol. L−1 and an ionic composition resembling that of plasma. Recirculation of 2 L of the same solutions through 12 gram of a mixture of hydrous zirconium oxide and alumina for 6 hours at a flow rate of 12 ml.min−1, resulted in a final concentration of 70 μ mol. L−1 of oxalic acid and 50 μ mol. L−/ of glyoxylic acid.

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