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- W3140600775 abstract "In order to eliminate the interference from high carbonate matrix on the determination of anions by ion chromatography with suppression conductivity detector,a method in which Dionex Pre online sample preparation technique was used to remove carbonate matrix before column separation was developed.Sodium sarbonate solution for steel cleaning,solid sodium carbonate and concentrated sodium carbonate eluent were analyzed by this method.The separation between analytes and matrices was obtained using high-capacity of hydroxide-selectivity IonPac AS15 anion separation column.Eluent Generator(EG) was employed to generate KOH eluent online and automatically for gradient elution.An extra pump,a valve with six ports and an online carbon dioxide removal device were added to the system.A brand-new concept of using a large loop instead of concentrator as the connector between ion chromatographic system and pretreatment system was proposed.This technique realized the determination of anions,such as chloride,nitrate,sulfate etc in 5000 mg/L carbonate matrixes with detection limits of 10~50 μg/L for different anions and the recoveries of anions were between 92%~108%.The method provides the advantages of easy-operation,good reproducibility,low operation cost and solves one of most tough problem of interference of high carbonate matrix on determination of anions by ion chromatography." @default.
- W3140600775 created "2021-04-13" @default.
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- W3140600775 date "2010-01-01" @default.
- W3140600775 modified "2023-09-28" @default.
- W3140600775 title "Determination of Anions in High Carbonate Matrix by Ion Chromatography with Pre Online Sample Preparation Technique" @default.
- W3140600775 hasPublicationYear "2010" @default.
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