RESERVOIR CHEMICAL SENSORS WITH OPTIONAL REMOVABLE RESERVOIR CELLS

摘要

Single or multi-cell reservoir sensors with single illumination sources and one or more detectors per cell unit have an arrangement whereby a gaseous, vapor or liquid sample enters the cell body and interacts with a sensing solution to detect and quantify a given species. Entrance of the sample into the sensor is through an opening in the cell body which may be covered with a membrane to contain the sensing reagent and to presort the species entering the cell. Reservoir cells can be used with organic, inorganic or biochemical sensing materials. A reservoir chemical sensor has a sensor body containing a reservoir cell channel around which source and detector are positioned within the cell body. A replaceable modular reservoir cell which contains sensing solution fits snugly and removably in the channel in the sensor body. Different reservoir cells can be easily inserted and removed from the sensor body. A variety of sensors such as alcohol, drugs of abuse, organic halides, cyanide and inorganic ions are provided.