Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7608801 | Journal of Chromatography A | 2018 | 5 Pages |
Abstract
A frequently studied environmental contaminant is the active substance diclofenac, which is removed insufficiently in sewage treatment plants. Since its inclusion in the watch list of the EU Water Framework Directive, the concentrations in surface waters will be determined throughout Europe. For this, still, more precise analytical methods are needed. As a reference, HPLC-MS is frequently employed. One of the major metabolites is 4'-hydroxydiclofenac (4'-OH-DCF). Also, diclofenac lactam is important for assessing degradation and transformation. Aceclofenac (ACF), the glycolic acid ester of diclofenac is used as a drug, too, and could potentially be cleaved to yield diclofenac again. In various sewage treatment plant influent samples, diclofenac, 4'-OH-DCF, DCF lactam and ACF could be determined with detection limits of 3â¯Î¼g/L, 0.2â¯Î¼g/L, 0.17â¯Î¼g/L and 10â¯ng/L, respectively.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Stephan Schmidt, Holger Hoffmann, Leif-Alexander Garbe, Rudolf J. Schneider,