EP 0227815 A4 19880623 - METHODS OF MEASURING OXYGEN CONCENTRATION.
Title (en)
METHODS OF MEASURING OXYGEN CONCENTRATION.
Title (de)
MESSVERFAHREN FÜR DIE SAUERSTOFFKONZENTRATION.
Title (fr)
PROCEDES DE MESURE DE LA CONCENTRATION EN OXYGENE.
Publication
Application
Priority
US 75226285 A 19850703
Abstract (en)
[origin: WO8700023A1] Methods of and luminescent substances for measuring oxygen concentration of a test fluid (18). A test fluid (18) is contacted with a plastic film (16) containing a luminescent substance, the luminescent emission intensity of which is quenched in the presence of oxygen. The film (16) is subjected to irradiation (14) by light that is strongly absorbed by the luminescent substance, and a measure of the time dependence of luminescent emission intensity I(t) is obtained. Three modes of measuring quenching, and thus the oxygen concentration, from I(t) are described. These modes are insensitive to variation in plastic thickness, concentration of the luminescent substance, and decomposition of the luminescent substance, and take into account the non exponential decay of the emission, thereby extending the range over which the film (16) is sensitive. The luminescent substances include metallo derivatives of partially or fully fluorinated porphyrins which are photostable due to the florination ofthe porphyrin ring.
IPC 1-7
IPC 8 full level
G01N 33/497 (2006.01); A61K 49/00 (2006.01); C07D 487/00 (2006.01); C07F 15/00 (2006.01); G01N 21/64 (2006.01); G01N 21/76 (2006.01)
CPC (source: EP)
A61K 49/0013 (2013.01); A61K 49/0015 (2013.01); A61K 49/0036 (2013.01); G01N 21/6408 (2013.01); G01N 21/643 (2013.01); G01N 2021/6432 (2013.01); G01N 2021/6484 (2013.01); G01N 2021/7786 (2013.01)
Citation (search report)
- No relevant documents have been disclosed.
- See references of WO 8700023A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8700023 A1 19870115; EP 0227815 A1 19870708; EP 0227815 A4 19880623; JP S62503191 A 19871217
DOCDB simple family (application)
US 8601362 W 19860627; EP 86904575 A 19860627; JP 50363786 A 19860627