High‐voltage contactless conductivity detection of metal ions in capillary electrophoresis | Zendy

Tanyanyiwa Jatisai | Zendy; Hauser Peter C. | Zendy

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High‐voltage contactless conductivity detection of metal ions in capillary electrophoresis

Author(s) -

Tanyanyiwa Jatisai,

Hauser Peter C.

Publication year - 2002

Publication title -

electrophoresis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.666

H-Index - 158

eISSN - 1522-2683

pISSN - 0173-0835

DOI - 10.1002/1522-2683(200211)23:21<3781::aid-elps3781>3.0.co;2-l

Subject(s) - alkali metal , capillary electrophoresis , chemistry , detection limit , conductivity , metal ions in aqueous solution , analytical chemistry (journal) , alkaline earth metal , thermal conductivity detector , metal , ion , ammonium , inorganic chemistry , chromatography , organic chemistry , gas chromatography

The detection of alkali, alkaline earth and heavy metal ions with a high‐voltage capacitively coupled contactless conductivity detector (HV‐C 4 D) was investigated. Eight alkali, alkaline earth metal ions and ammonium could be separated in less than 4 min with detection limits in the order of 5×10 ‐8 M . The heavy metals Mn 2+ , Pb 2+ , Cd 2+ Fe 2+ , Zn 2+ , Co 2+ , Cu 2+ and Ni 2+ could also be successfully resolved with a 10 m M 2‐( N ‐morpholino)ethanesulfonic acid/ DL ‐histidine (MES/His)‐buffer. Zn 2+ , Co 2+ , Cu 2+ and Ni 2+ showed an indirect response. The detection limits for the heavy metals were determined to range from about 1 to 5 ν M .

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