NDLI: Sweeping via Dynamic Complexation with Cyclohexane-1,2-diaminetetraacetic Acid for Trace Metal Analysis in Capillary Electrophoresis

Content Provider	Springer Nature Link
Author	Isoo, K. Terabe, S.
Copyright Year	2004
Abstract	To improve the detection sensitivity of metal ions in capillary electrophoresis (CE), combination of on-line complexation and sweeping was explored using cyclohexane-1,2-diaminetetraacetic acid (CDTA). CDTA has two roles, as a dynamic complexation agent to form a UV-absorbing complex and a carrier for sweeping. Six metal ions were used as test analytes. The effect of pH, CDTA concentration, composition of BGS and sample matrix, injection length of sample solution were examined and optimized to obtain high performance of this method. Under optimized conditions, the technique was validated in terms of the limit of detection, repeatability, and sensitivity enhancement. Improved detection responses were 60- to 160-fold in terms of peak heights for metal ions in comparison with conventional CZE of precapillary complexed metal ions. The limits of detection were in the range of 0.4 – 4.2 × 10−7 M.
Starting Page	49
Ending Page	53
Page Count	5
File Format	PDF
ISSN	00095893
Journal	Chromatographia
Volume Number	61
Issue Number	1-2
e-ISSN	16121112
Language	English
Publisher	Vieweg Verlag
Publisher Date	2004-12-16
Publisher Place	Wiesbaden
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Capillary electrophoresis Sweeping via dynamic complexation Cyclohexane-1,2-diaminetetraacetic acid (CDTA) Metal ions 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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