Passive leachate gatherer for detection of POPs in soil
A soil infiltration, passive technology, applied in the direction of testing organic pollutants in water, instruments, testing water, etc., can solve the problems of complex structure, inability to accurately reflect the in-situ characteristics of soil leachate, and high cost, and achieve device structure design. Reasonable, improve sampling efficiency, control the effect of sampling error
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[0027] The technical scheme of the present invention will be further described in detail below in conjunction with the accompanying drawings:
[0028] Such as figure 1 Shown is the layout of sampling points of the leachate collector. The sampling points can be set under the near root, on the near root, on the non-root, or under the root. Such as figure 2 It is a schematic diagram of a single collector, an embodiment: it includes a passive soil leachate collection bin and a POPs enrichment extraction system. Among them, the passive soil leachate collection bin includes a Teflon sheath at the bottom of the collection bin 1, a porous water inlet 2, a ground sheath 3, and Figure 5 The double-hole rubber stopper 8, glass tube 9, glass stopper 10 shown in the collection bin mouth; POPs enrichment extraction system includes SPE solid phase extraction tube 5, needle 6, suction filter bottle 4 and vacuum pump 7. Among them, the bottom of the collection bin is provided with a Teflon she...
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