NDLI: Simultaneous determination, by capillary zone electrophoresis, of multiple components of different industrial products

Content Provider	Springer Nature Link
Author	Cruces Blanco, C. Segura Carretero, A. Gálvez Mata, L. Fernández Gutiérrez, A.
Copyright Year	2001
Abstract	Four parabens (esters of 4-hydroxybenzoic acid), effective preservatives against the growth of bacteria, yeast, and mold in numerous industrial products, have been used in this work as model compounds to demonstrate the resolving power of capillary electrophoresis (CE). The simultaneous determination of methyl-(MP), ethyl-(EP), propyl-(PP), and butylparaben (BP) was achieved by capillary zone electrophoresis (CZE) with UV diode-array detection at 294 nm. When run voltage, temperature, and electrolyte concentration and pH were optimized the most effective separation was achieved within 7 min by use of 50 cm (effective length) fused silica capillary tubing and operation at 25kV and 20°C. Background electrolyte comprising 35 mM tetraborate buffer adjusted to pH 10.0 gave the best results. The limits of detection of the optimized method ranged from 0.65 μg mL−1 for BP to 0.81 μg mL−1 for MP; the relative standard deviation was between 0.35 and 0.50%. These results showed that the method enables the determination of the four parabens in commerially available cosmetic and pharmaceutical preparations containing some of the parabens and in an unidentified canned berry fruit juice.
Starting Page	414
Ending Page	418
Page Count	5
File Format	PDF
ISSN	00095893
Journal	Chromatographia
Volume Number	53
Issue Number	7-8
e-ISSN	16121112
Language	English
Publisher	Vieweg Verlag
Publisher Date	2001-01-01
Publisher Place	Wiesbaden
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Capillary zone electrophoresis Parabens Pharmaceutical preparations Cosmetic products Food analysis Analytical Chemistry Organic Chemistry Pharmacy Biochemistry Plant Sciences Measurement Science, Instrumentation
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Analytical Chemistry Biochemistry Clinical Biochemistry

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