▎ 摘　　要

NOVELTY - Sampling tank comprises: tank body (4) formed of two seamlessly welded hemispheres, where upper part of tank body is provided with an air outlet and valve; passivated film layer provided on an inner wall of the tank body, where the film layer includes an organic film layer and an inorganic film layer, and the organic film layer clings to inner wall of the tank body, and inorganic film layer is located outside the organic film layer; and circular base (5) provided at a lower bottom of the sampling tank, a diameter of the base is smaller than a maximum diameter at a middle part of the tank body, where the upper part of the sampling tank is provided with multiple connecting strips (2), a circular handle (1) is provided above the connecting strips, each connecting strip and the handle are welded into an integrated structure, a thickness of the film layer is 10-600 mu m, and a thickness ratio of the inorganic film layer and the organic film layer is 2-5:1-3. USE - The tank is useful for collecting and storing ambient air samples (claimed). ADVANTAGE - The tank is: corrosion-resistant; and not prone to adsorption. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for sampling tank for collecting and storing ambient air samples, comprising a tank body formed of two seamlessly welded hemispheres, a circular base provided at a lower bottom of the sampling tank, multiple connecting strips provided on an outer side wall of the base and extending upwards, where a part of the connecting strip at the outer wall of the base is a vertical strip, and a part of the connecting strip at the outer wall of the sampling tank is a bending part protruding outwards, remaining part of the connecting strip is a vertical strip, a middle part of the connecting strip fits with the outer wall of the tank body of the sampling tank, and the upper part of the connecting strip is connected to an inner wall of a circular handle, and a circular ring (3) provided at the upper part on the outer wall of the tank body of the sampling tank, the circular ring is located at the bending part of the connecting strip. DESCRIPTION OF DRAWING(S) - The figure shows the structure diagram of sampling tank. Handle (1) Connecting strip (2) Circular ring (3) Tank body (4) Base (5)