Abstract. Monitoring of sewages by using carbon one layer nanotubes (OLNT) for the exposure of the toxic troop landing revealed the possibility of their use for the express-analyses . At the same time the OLNT intercommunication with the hydrogen index of rN solutions is of special interest, including the luminescence. Luminescence of semiconductor one layer carbon nanotubes was discovered in 2002 , right after it was obtained their firm water suspension in surroundings superficially of active matter . Plaits of nanotubes at which they are found at ordinary terms, it was succeeded to slit by means of ultrasonic activation in an aqueous environment. The radiation of nanotubes takes place as a result of annihilation of electron-hole pair which appears in semiconductor nanotubes as exciton at absorption of quantum of light
Keywords: nanotubes, luminescence, monitoring, water suspension.