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Ion chromatography (IC) is a separation technique used to analyse aqueous solutions for ionic species for anions, cations and weak organic acids. The IC analysis methods available at LPD Lab Services allows the detection, identification and quantification of concentrations of major anions such as:
IC can also be used for the following cations:
The laboratory has the capability to detect, identify and measure numerous weak organic acid WOA species. The laboratory has a UKAS accredited method to measure water soluble anions. Applications of Anion, Cation and WOA Chromatography The Anions and Cations can be analysed over a large dynamic range of concentrations on a wide range of samples including:-
Methods can also be performed on a diverse range of sample matrices allowing accurate reliable results. Weak Organic Acids Ion Chromatography can be used to analyse a variety of weak organic acids WOA. These are organic compounds that have acidic properties but do not fully dissociate in water (which make them weak acids). While there are many organic acids, not all of them are sensitive enough to be detected by ion chromatography. Below is a list of common organic acids that are easily detected by ion chromatography, this list is not definitive and it may be possible to analyse for less common weak organic acids as well.
Anion, Cation and Weak Organic Acid Chromatography Detection Limits The limit of detection that can be obtained in most cases will be dependent on the anions or cations being analysed for, however typical detection limits of 0.1 ppm down to parts per billion levels are achievable. Ion Chromatography Instrumentation For the analysis of anions and weak organic acids LPD uses a dedicated Dionex Integrion HPIC system. For the analysis of cations LPD uses a Dionex DX320 IC system. Each system uses a dedicated auto-sampler allowing large numbers of samples to be analysed efficiently. Please contact us if you do not see the specific activity you require, we may still be able to help you. |
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