ISSN:
1436-5073
Keywords:
process monitoring
;
brine analysis
;
high performance liquid chromatography
;
trace metal determination
;
automated analysis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Methodology based on high performance liquid chromatography (HPLC) has been developed for the determination of trace-metals in concentrated brines. Metal ions, (Al, Ba, Ca, Mg, Sr and Zn) were concentrated quantitatively and isolated from the sodium chloride matrix using a chelating ion-exchange column dynamically coated with the chelating dye xylenol orange. The pH dependence of the uptake of the metals was studied. Using the chelating ion-exchange preconcentration column followed by ion chromatography all the metals studied were determined at the low ng ml−1 level in concentrated brines and linear/workable calibrations were obtained in the concentration range of interest (〈100 ng ml−1). The methodology developed was successfully transferred to an automated on-line monitoring system for the determination of Ba, Ca, Mg and Sr in concentrated feed brines used in the chlor-alkali industry.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01245494
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