Measurements of phytoplankton of sub-nanomolar chlorophyll concentrations by a modified double-modulation fluorometer

0153693 - MBU-M 20000501 RIV CZ eng J - Článek v odborném periodiku
Dijkman, N. - Kaftan, David - Trtílek, M. - Nedbal, Ladislav
Measurements of phytoplankton of sub-nanomolar chlorophyll concentrations by a modified double-modulation fluorometer.
Photosynthetica. Roč. 37, č. 2 (1999), s. 249-254. ISSN 0300-3604. E-ISSN 1573-9058.
[Regional Photosynthesis Workshop /2./. Lipno, 31.01.1999-03.02.1999]
Grant CEP: GA MŠMT OK 271
Grant ostatní: INCO-COPERNICUS(EC) IC15CT95-0105
Kód oboru RIV: BO - Biofyzika
Impakt faktor: 0.734, rok: 1999

A modification of the double-modulation fluorometer is described that allows measuring very dilute phytoplankton samples. The high sensitivity is achieved by increasing the sample volume and by collecting the fluorescence from the large volume by an integrating sphere. The sensitivity of the instrument increased approximately proportionally to the volume of the sample. A further improvement of the sensitivity was achieved by replacing the PIN photodiode of the earlier versions by a photomultiplier.
Trvalý link: http://hdl.handle.net/11104/0051187