Ion Chromatography
Introduction
Ion Chromatography (IC) is the separation of inorganic and
organic ionic species by ion exchange chromatography followed
by suppressed conductivity detection. The technique was
pioneered by Dow Chemical Company in 1974 and has grown in
popularity since.
The species analyzed by IC include both anions and cations. The
separation of anions is accomplished via anion exchange
chromatography. The separations of cations are accomplished via
cation exchange chromatography.Transgenomic provides a broad
range of columns for the separation of both anions and cations.
The resins used for anion and cation exchange chromatography in
IC employ a functionalized, macroporous polystyrene/divinyl
benzene copolymer. Resins functionalized with quaternary alkyl or
alkynol ammonium groups are used with hydroxide or carbonatebased
eluents for anion exchange IC. Resins functionalized with
sulfonic acid or carboxylic acid groups are used with acidic eluents
for cation exchange IC.
Features
The key features of the Transgenomic IC columns are:
- Polymeric substrate
- Solvent compatibility
- High efficiency
- Reproducibility
- pH Stability from 0 to 14
Column Selection
Transgenomic IC columns have been designed to run on a variety
of systems. They are tested to be compatible with Ion
Chromatographs from: Metrohm-Peak, Dionex, Hach-Lachat, and
Alltech. The selectivities have been optimized to be compatible
with many of the common IC columns currently available. This
includes columns that meet the requirements of E.P.A. methods
300 parts a and b, and E.P.A. method 300.1.
Column Equivalents Guide
| ICSep AN300 |
|
Dionex AS4A |
|
F-, Cl-, NO2-, Br-, NO3-, HPO42-, SO42-, By E.P.A. Method 300.0(a) |
| ICSep AN1 |
|
Dionex AS9-HC |
|
F-, Cl-, NO2-, Br-, NO3-, HPO42-, SO42-,
Low molecular weight, Organic acids in medium to high ionic strength matrices, Cr(III), Cr(VI) as CrO3-, CrO42- |
| ICSep ANSC |
|
Dionex AS4A-SC |
|
Polyvalent Phosphates, Arsentate, Sulfite Selenate, Arsenite, Selenite, F-, Cl-, NO2-, Br-, NO3-, HPO42-, SO42-, Low molecular weight, Organic acids |
| ICSep AN1-SC |
|
Dionex AS9-HC |
|
F-, Cl-, NO2-, Br-, NO3-, HPO42-, SO42-, Low molecular weight, Organic acids in medium to high ionic strength matrices |
| ICSep AN2 |
|
Dionex AS14 |
|
Arsenate, Sulfite, Selenate, Arsenite, Selenite, F-, Cl-, NO2-, Br-, NO3-, HPO42-, SO42-, Low molecular weight Organic acids |
| ICSep AN300B |
|
Dionex AS9 |
|
F-, Cl-, NO2-, Br, NO3-, HPO42-, SO42-, ClO2-, ClO3-, BrO3- |
| ICSep CN2 |
|
Dionex CS15 |
|
Li+, Na+, K+, Rb+, Cs+,Mg2+, Ca2+, NH4+, Cu2+, Ni2+, Zn2+, Co2+, Cd2+, Pb2+, Mn2+, Fe2+, Fe3+ |
|