Capillary zone electrophoresis and ion chromatography in the low mu g/1 range applied to the determination of anions in hydrogen peroxide

Meissner, T Eisenbeiss, F Jastorff, B

T. Meissner et al., Capillary zone electrophoresis and ion chromatography in the low mu g/1 range applied to the determination of anions in hydrogen peroxide, J CHROMAT A, 829(1-2), 1998, pp. 351-357

21

INGLESE

Article

Chemistry & Analysis","Spectroscopy /Instrumentation/Analytical Sciences

JOURNAL OF CHROMATOGRAPHY A

0021-9673 → ACNP

829

1-2

1998

351 - 357

ISI

0021-9673(199812)829:1-2<351:CZEAIC>2.0.ZU;2-4

Capillary zone electrophoresis was performed in a 300 mu m I.D. column in a closed separation system with a background electrolyte providing resolutio n of the inorganic anions chloride, sulphate, nitrate, nitrite, fluoride an d phosphate. Due to the unusual I.D. of the capillary the sample loadabilit y was such that an injection volume of 350 nl could be injected. Consequent ly, limits of detection in the low mu g/l range could be realised with cond uctivity detection. The method was applied to the determination of trace an ionic impurities in hydrogen peroxide of electronic grade. The analysis was characterised by its shortness (5 min) and the direct injection of the hyd rogen peroxide. The H2O2 samples were analysed in parallel by ion chromatog raphy and the results of both methods were compared. (C) 1998 Elsevier Scie nce B.V. All rights reserved.