Abstract: A system and method for sampling metal ions in a corrosive gas is provided. The system includes: a sampling bottle; a vacuuming pipeline provided with a vacuuming device, where the vacuuming device is configured to vacuum a sampling chamber; a replacement gas pipeline configured to blow a replacement gas into the sampling chamber; an injection pipeline configured to inject a sample gas into the sampling chamber; and a purge gas pipeline. With the sampling system, the sampling bottle can be first subjected to vacuuming and thorough replacement to reduce the interference of impurities, then the sampling bottle is introduced with a corrosive sample gas, and then a corrosive gas is vaporized and blown away through a purge gas to leave metal ions or metal ions are dissolved in an absorption solution.

Abstract: A system and method for sampling metal ions in a corrosive gas is provided. The system includes: a sampling bottle; a vacuuming pipeline provided with a vacuuming device, where the vacuuming device is configured to vacuum a sampling chamber; a replacement gas pipeline configured to blow a replacement gas into the sampling chamber; an injection pipeline configured to inject a sample gas into the sampling chamber; and a purge gas pipeline. With the sampling system, the sampling bottle can be first subjected to vacuuming and thorough replacement to reduce the interference of impurities, then the sampling bottle is introduced with a corrosive sample gas, and then a corrosive gas is vaporized and blown away through a purge gas to leave metal ions or metal ions are dissolved in an absorption solution.

Abstract: Disclosed is a portable rapid detection device for cognition, sleep and psychological status. The portable rapid detection device comprises a detection dial plate, an adjusting knob, woven watchbands, screw rods, sweat-absorbent linings and a sweat-absorbent quick-drying pad. The detection dial plate is of a cylindrical structure. The embedded adjusting knob is installed in the middle of the front end of the detection dial plate. The woven watchbands are installed at two ends of the detection dial plate and fixed through the screw rods. The embedded sweat-absorbent lining is installed on the inner side of the woven watchband. The sweat-absorbent quick-drying pad is installed in the middle of the bottom of the detection dial plate and fixed through magnetic attraction.