Increasing concentrations of toxic substances in the air of the international space station are still looking for sources

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 Increasing concentrations of toxic substances in the air of the international space station are still looking for sources


Infographic: astronauts on the international space station.

In May, Rosneft said that the toxic benzene concentration in the air of the international space station increased, but did not exceed the maximum allowable concentration, so there was no threat to astronauts on the space station.

The U.S. National Aeronautics and Space Administration announced on June 11 that the AQM air quality monitor of the United States was used to measure the benzene level in the Russian Star capsule. Russian aerospace group later confirmed the matter. Later, according to NASA, air flow between the Russian module and the US module in the international space station was temporarily stopped to find the source of benzene. However, it was not found at that time.

The air in the Russian module and the U.S. module of the international space station has been separated again, and U.S. instruments are being used again in the Russian module to find the source of toxic benzene, NASA said Thursday. According to the report, air flow between the Russian module and the United States module was temporarily stopped in order to further search for the source of benzene in the space station. Russian team members and American team members respectively took steps to adjust the air flow in their cabins.

It is reported that the AQM air quality monitor in the United States will conduct additional measurement in the Russian cabin, and then restore the air flow between the cabin and the cabin on June 22. New measurements should help to determine the source of benzene.

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

At present, there are Russian cosmonauts Anatoly Ivanisin, Ivan Wagner, American cosmonaut Christopher Cassidy, Douglas Hurley and Robert benken on the international space station.

Source: Zhang Zutao, editor in charge of China News Network_ NT5054