The invention relates to a concentration container and a pneumatic focusing
system containing the concentration container. The concentration device comprises the concentration container, a sample introduction mechanism, a
stream guidance mechanism and a buffer container, wherein the concentration container is provided with a pneumatic cavity and an air exhaust column; the sample introduction mechanism is provided with a sample introduction channel, a
current limiting hole and a
shunting hole, wherein the sample introduction channel, the
current limiting hole and the
shunting hole are communicated in sequence; the
stream guidance mechanism is arranged on the concentration container; the buffer container and the concentration container and / or the
stream guidance mechanism are connected; anda stream
guidance channel and a buffer cavity are communicated to meet a situation that the vacuum load requirement of vacuum analysis equipment is not affected. When the above concentration device is connected with the sample introduction joint of an
aerodynamics lens, under a condition that a conventional vacuum load is adopted, under the driving of an air
pressure difference, an
aerosol sampleintroduction flow can be enlarged, the through rate of large-grain-size particulate matters can be greatly increased, and
aerosol concentration and particulate beam focusing can be realized so as tobe favorable for carrying out
aerosol sample introduction and detection under low concentration.