Determination of Silver Speciation in Natural Waters. 1. Laboratory Tests of Chelex-100 Chelating Resin as a Competing Ligand

2001 ◽  
Vol 35 (10) ◽  
pp. 1953-1958 ◽  
Author(s):  
Russell T. Herrin ◽  
Anders W. Andren ◽  
David E. Armstrong
Keyword(s):  
Laboratory Tests ◽  
Natural Waters ◽  
Chelating Resin ◽  
Chelex 100

Automated determination of vanadium(IV) and (V) in natural waters based on chelating resin separation and catalytic detection with Bindschedler’s green leuco base

2001 ◽  
Vol 443 (1) ◽  
pp. 143-151 ◽  
Author(s):  
Kei Okamura ◽  
Masahito Sugiyama ◽  
Hajime Obata ◽  
Masahiro Maruo ◽  
Eiichiro Nakayama ◽  
...  
Keyword(s):  
Natural Waters ◽  
Chelating Resin ◽  
Resin Separation ◽  
Automated Determination

A batch method for the determination of ion-exchangeable trace metals in natural waters

1977 ◽  
Vol 28 (3) ◽  
pp. 397 ◽  
Author(s):  
BT Hart ◽  
HR Davies
Keyword(s):  
Trace Metals ◽  
Natural Water ◽  
Water Samples ◽  
Natural Waters ◽  
Field Studies ◽  
Metal Species ◽  
Batch Method ◽  
Chelex 100 ◽  
Natural Water Samples

A batch method for the determination of ion-exchangeable trace metals in natural waters is reported. The technique employs the resin Chelex 100 and has been tested for Cd, Cu, Pb, Zn and Fe using both synthetic and natural water samples. Quantitative recovery of ionic spikes was achieved and uptake was found to occur rapidly, being virtually completed within 1 h. Evidence is provided for the presence in the natural water samples of stable bound trace metal species. This batch method should prove particularly useful for field studies of the physicochemical forms of trace metals in aquatic environments.

scholarly journals Graphite furnace AAS determination of vanadium in natural waters after preconcentration with mini-column chelating resin.

1989 ◽  
Vol 38 (4) ◽  
pp. 201-203 ◽  
Author(s):  
Tokuo SHIMIZU ◽  
Kenji ICHIKAWA ◽  
Masayuki IZAWA ◽  
Yoshio SHIJO
Keyword(s):  
Natural Waters ◽  
Graphite Furnace ◽  
Chelating Resin ◽  
Graphite Furnace Aas

The Determination of Glycollic Acid in Sea Water

1973 ◽  
Vol 53 (2) ◽  
pp. 321-324 ◽  
Author(s):  
N. M. Shah ◽  
G. E. Fogg
Keyword(s):  
Natural Waters ◽  
Sea Water ◽  
Inorganic Ions ◽  
Ammonium Hydroxide ◽  
Chelating Resin ◽  
Aquatic Environments ◽  
Glycollic Acid ◽  
Energy Transfers ◽  
High Concentrations

Glycollic acid is probably a major component of the extracellular organic fraction liberated during phytoplankton photosynthesis and presumably plays an important part in energy transfers in aquatic environments (Fogg, 1966). It has been difficult to investigate these possibilities, however, because of the lack of a reliable and convenient method for the determination of glycollate in natural waters. With fresh water, ionexchange resins have been used for separating and concentrating glycollate which may then be estimated colorimetrically using Calkins's method (Fogg, Eagle & Kinson, 1969). This method is time consuming and is much more difficult and laborious with sea water because of the presence of high concentrations of inorganic ions. Koyama & Thompson (1964) determined various organic acids after extraction from sea water with organic solvents but this method is also laborious and for glycollic acid yields ambiguous results. Andrews & Williams (1971) measured free amino acids and also glucose occurring in sea water in μtgl−1 concentrations by retaining them on a copper chelating resin and a charcoal column respectively and eluting them with ammonium hydroxide or 10% ethanol as appropriate.

scholarly journals Use of a Polymer Inclusion Membrane and a Chelating Resin for the Flow-Based Sequential Determination of Copper(II) and Zinc(II) in Natural Waters and Soil Leachates

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 5062
Author(s):  
Tânia C. F. Ribas ◽  
Charles F. Croft ◽  
M. Inês G. S. Almeida ◽  
Raquel B. R. Mesquita ◽  
Spas D. Kolev ◽  
...  
Keyword(s):  
Metal Ions ◽  
Natural Waters ◽  
Polymeric Materials ◽  
Chelating Resin ◽  
Sequential Injection Analysis ◽  
Sequential Injection ◽  
Inclusion Membrane ◽  
Polymer Inclusion Membrane ◽  
Determination Of Copper

A bi-parametric sequential injection method for the determination of copper(II) and zinc(II) when present together in aqueous samples was developed. This was achieved by using a non-specific colorimetric reagent (4-(2-pyridylazo)resorcinol, PAR) together with two ion-exchange polymeric materials to discriminate between the two metal ions. A polymer inclusion membrane (PIM) and a chelating resin (Chelex 100) were the chosen materials to retain zinc(II) and copper(II), respectively. The influence of the flow system parameters, such as composition of the reagent solutions, flow rates and standard/sample volume, on the method sensitivity were studied. The interference of several common metal ions was assessed, and no significant interferences were observed (<10% signal deviation). The limits of detection were 3.1 and 5.6 µg L−1 for copper(II) and zinc(II), respectively; the dynamic working range was from 10 to 40 µg L−1 for both analytes. The newly developed sequential injection analysis (SIA) system was applied to natural waters and soil leachates, and the results were in agreement with those obtained with the reference procedure.

Sign in / Sign up

Export Citation Format

Share Document