Development of ion chromatography methods for the determination of trace anions in ultra pure water from power plants

A suppressed ion chromatography (IC) technique, using a carbonate/hydrogen carbonate or a hydroxide eluent, has been evaluated as a monitoring tool for the detection of major anions (F-, Cl-, NO3-, PO43- and SO42-) in ultra pure water and condensed steam from thermal power plants. An electrical cond...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Serbian Chemical Society 2005, Vol.70 (7), p.995-1003
Main Authors: Cickaric, Dragana, Dersek-Timotic, Ivana, Onjia, Antonije, Rajakovic, Ljubinka
Format: Article
Language:English
Subjects:
anions
power plant
trace analysis
ultra pure water
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A suppressed ion chromatography (IC) technique, using a carbonate/hydrogen carbonate or a hydroxide eluent, has been evaluated as a monitoring tool for the detection of major anions (F-, Cl-, NO3-, PO43- and SO42-) in ultra pure water and condensed steam from thermal power plants. An electrical conductivity detector with an anion-exchange column (IonPac AS14), an auto self-regenerating suppressor (ASRS), and an isocratic high-pressure pump system were used for the detection of low concentrations of inorganic anions. It was shown that the suppressed IC technique provides a suitable means for preventing possible damage to generating equipment in power plants. The detection limits of the method for the anions of interest were < 0.3 ?g/L. Tehnika supresivne jonske hromatografije (IC) razvijena je za analizu tragova anjona (F-, Cl-, NO3-, PO43- and SO42-) u uzorcima ultra ciste vode. Detektor elektricne provodljivosti sa kolonom za jonsku izmenu (IonPac AS14) samoregenerisuci anjonski supresor (ASRS) i izokraticna IC pumpa visokog pritiska uspesno su primenjeni za otkrivanje niskih koncentracija neorganskih anjona. Razvijene su dve IC metode, jedna sa karbonatnim (za analizu NO3 PO43- i SO42- -jona), a druga sa hidroksidnim eluentom (za analizu F- i Cl--jona). Granice detekcije primenjenih metoda bile su: < 0,3 ?g/L (metoda sa karbonatnim eluntom) i < 0,1 ?g/L (metoda sa hidroksidnim eluentom). Na ovaj nacin razvijene su dve IC metode koje se mogu primeniti za kontrolu tragova anjona u sistemu voda-para u termoelektranama.
ISSN:0352-5139
1820-7421
DOI:10.2298/JSC0507995C