| abstract |
The utility model discloses an aquatic VOCs automatic on -line continuous monitor's membrane sampling device. It includes peristaltic pump, two three solenoid valve, vacuum ultraviolet lamp, ionization source cavity, cavity tubulose membrane and a series of ion transport electrodes. The switch of two three solenoid valve and peristaltic pump is controlled by software automatically, can accomplish the switching of sample and pure water during continuous monitor voluntarily, and cavity tubulose membrane effectively increases film length be fixed in the ionization source cavity with the mode of spiral in, increases substantially the sensitivity that the membrane advances appearance, and the ionization mode adopts single photon ionization, and this kind of soft ionization mode does not have piece, easier spectrum unscrambling. This method can realize aquatic volatile organic compounds's (VOCs) highly sensitive automatic on -line continuous monitor, water pollution dye and drinking water quality on -line measuring in the aspect of have a wide application prospect. |