期刊
ANALYTICA CHIMICA ACTA
卷 665, 期 1, 页码 1-6出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2010.03.014
关键词
Sequential injection analysis; Capillary electrophoresis; Capacitively coupled contactless conductivity detection; Inorganic cations and anions
资金
- Swiss Federal Commission for Scholarships for Foreign Students (ESKAS)
- Swiss National Science Foundation [200020-113335/1]
A capillary electrophoresis (CE) instrument with capacitively coupled contactless conductivity detection ((CD)-D-4) based on a sequential injection analysis (SIA) manifold was refined. Hydrodynamic injection was implemented to avoid a sampling bias by using a split-injection device based on a needle valve for precise adjustment. For safety and reliability, the integrity of the high voltage compartment at the detection end was fully maintained by implementing flushing of the high voltage interface through the capillary. With this set-up, extended fully automated monitoring applications are possible. The system was successfully tested in the field for the determination of the concentration levels of major inorganic cations and anions in a creek over a period of 5 days. (C) 2010 Elsevier B.V. All rights reserved.
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