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New Fully Portable Instrument for the Versatile Determination of Cations and Anions by Capillary Electrophoresis with Contactless Conductivity Detection

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Kuban, P and Nguyen, HTA and Macka, M and Haddad, PR and Hauser, PC (2007) New Fully Portable Instrument for the Versatile Determination of Cations and Anions by Capillary Electrophoresis with Contactless Conductivity Detection. Electroanalysis, 19 (19-20). pp. 2059-2065. ISSN 1040-0397

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Abstract

A new portable capillary electrophoresis instrument with capacitively coupled contactless conductivity detection was
developed and optimized for the sensitive field measurements of ionic compounds in environmental samples. It is
powered by batteries and the high voltage modules are capable of delivering up to 15 kV at either polarity for more
than one working day. Inorganic cations and anions, including ions of heavy metals and arsenate, could be determined
with detection limits in the range from about 0.2 to 1 mM. The instrument was field tested in a remote region of
Tasmania and nitrite and ammonium could be determined on-site at concentrations as low as 10 ppb in presence of
other common inorganic ions at concentrations which were 2 to 3 orders of magnitude higher.

Item Type: Article
Keywords: Capillary electrophoresis, Contactless conductivity detection, Portable instrument, Environmental analyses, Arsenic, Heavy metals, Inorganic ions
Journal or Publication Title: Electroanalysis
Publisher: Wiley-VCH
Page Range: pp. 2059-2065
ISSN: 1040-0397
Identification Number - DOI: 10.1002/elan.200703908
Additional Information:

The original publication is available at
http://www.interscience.wiley.com/

Date Deposited: 07 Apr 2008 14:05
Last Modified: 18 Nov 2014 03:33
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