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Optical photothermal detection in HPLCстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Proskurnin M.A., Luk'yanov A.Y., Bendrysheva S.N., Bendryshev A.A., Pirogov A.V., Shpigun O.A.
- Журнал: Analytical and Bioanalytical Chemistry
- Том: 375
- Номер: 8
- Год издания: 2003
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- Первая страница: 1204
- Последняя страница: 1211
- DOI: 10.1007/s00216-002-1720-1
- Аннотация: A mode-mismatched parallel dual-beam thermal lens spectrometer with a far-field single-channel detector system was used as a detector in HPLC. An expert estimation of the measurement results was applied to optimize the optical-scheme configuration of the spectrometer to achieve the longest linear calibration range and highest repeatability under chromatographic flow conditions. Chelates with 4-(2-pyridylazo)resorcinol were separated and determined with the limits of detection of nx10(-8)-nx10(-7) mol L-1; the relative standard deviation of measurements was 46%. Xylenol Orange, 4-(2-thiazolylazo)resorcinol, and dithizone were studied as post-column reagents in thermal lens detection in ion chromatography. The limits of detection were nx10(-8)-nx10(-7) mol L-1; the linear calibration ranges were about three orders; the relative standard deviation of measurements was 3-7%. A combined photothermal-refractometric detector for HPLC based on a polarization interferometer is proposed. Metal complexes as 4-(pyridylazo)resorcinol chelates (limits of detection of nx10(-8)-nx10(-7) mol L-1) and sugars (limits of detection of 10-20 ng L-1) were investigated as model substances. Obtained results were compared with results for traditional detectors, which show that photothermal detection has higher sensitivity than photometric and other absorption detectors.
- Добавил в систему: Проскурнин Михаил Алексеевич