Increased concentration of toxic substances in the Air of the International Space Station is still searching for a source.

The Air of the Russian and U.S. modules has been separated again after an increase in benzene concentrations in the air on the International Space Station, and instruments are being used again to find the source of the toxic benzene, Russian satellite news network reported. The Russian Space Agency said in May that the concentration of toxic benzene in the air of the International Space Station had increased, but not more than the maximum allowable concentration, and posed no threat to astronauts on the station.

Increased concentration of toxic substances in the Air of the International Space Station is still searching for a source.

NASA said on June 11 that the U.S. AQM air quality monitor was used to measure benzene levels in the Russian Star capsule. The Russian space group later confirmed the matter. Then, according to NASA, air circulation between the Russian and U.S. modules on the International Space Station was temporarily stopped in search of the source of the benzene. However, it was not found at the time.

The air of the Russian and U.S. modules of the International Space Station is being re-used in the Russian module to find the source of the toxic benzene, NASA said Wednesday. “Air circulation between the Russian module and the U.S. module was temporarily stopped to further search for the source of the benzene in the space station,” it was reported. The Russian and U.S. team members took steps to adjust the air flow in their cabins. “

It is reported that the United States AQM air quality monitor will be in the Russian cabin for additional measurements, and then on June 22 to restore air circulation between the cabin and the cabin. The new measurements should help determine the source of benzene.

Benzene is a colorless liquid at room temperature, has a unique slightly sweet odor, is one of the components of gasoline, used in the production of drugs, plastics, synthetic rubber and coatings, toxic and carcinogenic.

Russian cosmonauts Anatoly Ivanishin, Ivan Wagner, American astronauts Christopher Cassidy, Douglas Hurley and Robert Benken are currently on the International Space Station.