Determination of pharmaceuticals classified as emerging pollutants using capillary electrophoresis with capacitively coupled contactless conductivity detection

A study on the simultaneous separation of 13 pharmaceutical products by capillary electrophoresis with capacitively coupled contactless conductivity detection was presented. The parameters of the background electrolyte, such as pH, organic additives as well as types and concentrations of cyclodextri...

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Veröffentlicht in:Electrophoresis 2008-08, Vol.29 (17), p.3701-3709
Hauptverfasser: Quek, Ngee Mien, Law, Wai Siang, Lau, Hiu Fung, Zhao, Jian Hong, Hauser, Peter C., Li, Sam Fong Yau
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container_end_page 3709
container_issue 17
container_start_page 3701
container_title Electrophoresis
container_volume 29
creator Quek, Ngee Mien
Law, Wai Siang
Lau, Hiu Fung
Zhao, Jian Hong
Hauser, Peter C.
Li, Sam Fong Yau
description A study on the simultaneous separation of 13 pharmaceutical products by capillary electrophoresis with capacitively coupled contactless conductivity detection was presented. The parameters of the background electrolyte, such as pH, organic additives as well as types and concentrations of cyclodextrins (CD) were studied. The optimal separation conditions were achieved with a background electrolyte consisting of 9 mM Tris/5 mM lactic acid at pH 8.0, containing 5% n‐propanol, 0.025% γ‐CD, 0.075% hydroxyl‐β‐CD and 0.15% dimethyl‐β‐CD. Limits of detections ranged from 61 to 1676 μg/L (S/N=3) and the relative standard deviations for migration time and peak area were below 2 and 6%, respectively. This demonstrated the potential of the capillary electrophoresis‐capacitively coupled contactless conductivity detection method for biomedical and environmental analysis, as shown in the determination of pharmaceuticals identified as emerging pollutants in water samples.
doi_str_mv 10.1002/elps.200800153
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subjects Capacitively coupled contactless conductivity detection
Conventional capillary electrophoresis
Cyclodextrins - chemistry
Electrophoresis, Capillary - methods
Emerging pollutants
Hydrogen-Ion Concentration
Pharmaceutical Preparations - analysis
Pharmaceuticals
Sensitivity and Specificity
Solvents
Water Pollutants, Chemical - analysis
title Determination of pharmaceuticals classified as emerging pollutants using capillary electrophoresis with capacitively coupled contactless conductivity detection
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