| 摘要 |
A method of, and apparatus for use in, clinical gas monitoring are disclosed. In a first embodiment for monitoring the composition of anaesthetic gases, the apparatus comprises (a) a conduit defining a flow channel for said flowing gas stream, (b) located within said conduit, a sensor head comprising an active surface; and (c) an optically transparent window in the wall of said conduit adjacent to said sensor head to permit optimal radiation from an external source to impinge upon said active surface through said window and to permit egress of radiation emitted by said active surface; wherein said active surface is a surface capable of supporting a plasmon resonance. For extracorporeal and in vitro blood gas analysis, the apparatus comprises a cell adapted to receive a blood sample for analysis, said cell incorporating in or on one surface thereof a gas-permeable membrane and, in contact with that surface of said membrane remote from the receptive volume of said cell, an active surface which is capable of supporting a plasmon resonance. |
