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Series / Report no.
Open Access
Type
Report
Language
nl
Date
1999-10-30
Research Projects
Organizational Units
Journal Issue
Title
Anionchromatografische analyse met een on-line
eluens generator
Translated Title
Anion chromatografic analysis with an on-line
eluens generator
Published in
Abstract
Dit rapport bevat de resultaten van het onderzoek naar
het ontwikkelen van een geautomatiseerde ionchromatografische methode voor
de bepalingen van micro- en macro gehalten van anionen in water. Het
onderzoek heeft geresulteerd in een methode voor de gelijktijdige bepalingen
van fluoride, chloride, nitriet, bromide, nitraat, sulfaat en sulfiet in
diverse waterige milieu's. Resoluties tussen de anionen zijn hoger dan 1,6.
De aantoonbaarheidsgrenzen voor de anionen zijn beter dan 5 umol/l. De
precisies voor chloride, nitraat en sulfaat op een nivo van 0,1 mmol/l zijn
beter dan 5 %. De robuuste, gebruiksvriendelijke en gevoelige methode voor
de bepaling van diverse anionen in water is eenvoudig genoeg om routinematig
verricht te worden. Sturing en dataverwerking met Peaknet versie 5.1
levert een millenniumbestendig analysesysteem op.'On-line' eluens generatie
en chemische suppressie met behulp van electrodialyse levert een ultra lage
achtergondgeleidbaarheid op en reduceert het eluens-, regenerant- en helium
verbruik tot nihil.
An automated sensitive and selective ion chromatographic method was developed and described for the simultaneous determinations of minor and major analytes in water. The study resulted in a method for the simultaneous determinations of fluoride, chloride, nitrite, nitrate, sulphate, bromide and sulphite in water samples. The detection limit appears to be better than 5 4mol/l for the anions. The precision for chloride, nitrate and sulphate on the level of 0.1 mmol/l is better than 5% and the resolution between the anions is better than 1.6. High sensitivity was achieved using an on-line eluent generator for the creation of a gradient mobile phase. The system is millennium proof, robust and suitable for routine analysis. The microbore method with gradient elution reduces the eluent, helium and regenerant consumptions to a minimum. Also the shift of the retention times, caused by high anion concentrations, is minimised. Application of the method was tested for drinking water, rain water, groundwater and surface water. The analysis time of the anions is less than 25 min. The operational parameters for the method are described in a useful format.
An automated sensitive and selective ion chromatographic method was developed and described for the simultaneous determinations of minor and major analytes in water. The study resulted in a method for the simultaneous determinations of fluoride, chloride, nitrite, nitrate, sulphate, bromide and sulphite in water samples. The detection limit appears to be better than 5 4mol/l for the anions. The precision for chloride, nitrate and sulphate on the level of 0.1 mmol/l is better than 5% and the resolution between the anions is better than 1.6. High sensitivity was achieved using an on-line eluent generator for the creation of a gradient mobile phase. The system is millennium proof, robust and suitable for routine analysis. The microbore method with gradient elution reduces the eluent, helium and regenerant consumptions to a minimum. Also the shift of the retention times, caused by high anion concentrations, is minimised. Application of the method was tested for drinking water, rain water, groundwater and surface water. The analysis time of the anions is less than 25 min. The operational parameters for the method are described in a useful format.
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