Separation of 4-(2-pyridylazo)resorcinolato metal chelates by micellar electrokinetic capillary chromatography

Tohru Saitoh, Hitoshi Hoshino, Takao Yotsuyanagi

Research output: Contribution to journalArticlepeer-review

91 Citations (Scopus)

Abstract

The first application of micellar electrokinetic capillary chromatography to the separation of metal chelate compounds is demonstrated. The resolution of the peaks of 4-(2-pyridylazo)resorcinolato (par) chealates is excellent on a 60 cm × 0.05 mm I.D. silica capillary filled with a 0.02 mol dm-3 sodium dodecylsulphate micellar eluent at an applied voltage of 16.5 kV (driving current 12 μA). The theoretical plate number for the chelates reaches to more than 1 · 105 per 60 cm. The elution behaviour is discussed in terms of electrokinetic and micellar partition characteristics of the metal-par chelates. The chromatographic system is highly promising for the ultratrae detemination of metals at the femtomole level in a very small sample injection volume (ca. 6 nl).

Original languageEnglish
Pages (from-to)175-181
Number of pages7
JournalJournal of Chromatography A
Volume469
Issue numberC
DOIs
Publication statusPublished - 1989

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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