Dual-channel secondary analysis thermal desorption device

The invention relates to the technical field of detection, in particular to a dual-channel secondary analysis thermal desorption device. The third air inlet of a first six-way valve and the third airinlet of a second six-way valve communicate with a GC sample inlet through air pipes, the first air inlet of the first six-way valve is communicated with a first low-temperature secondary collecting trap through an air pipe, and the first low-temperature secondary collecting tap further is communicated with the fourth air inlet of the first six-way valve; the first air inlet of the second six-wayvalve is communicated with a second low-temperature secondary collecting trap through an air pipe, and the second low-temperature secondary collecting trap is further communicated with the fourth airinlet of the first six-way valve; the fifth air inlet of the first six-way valve is communicated with a first desorption pipe through an air pipe; the fifth air inlet of the second six-way valve is communicated with a second de