DGT probe and sediment/water interface micro-area detection method using same
A determination method and sediment technology, applied in the direction of surface/boundary effect, measurement device, instrument, etc., can solve the problem of inability to realize the determination of phosphorus, sulfur and metal three elements
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Embodiment 1
[0048] The three-layer immobilized gel DGT probe described in this example is as follows figure 1 and figure 2 As shown, it includes a connected substrate 7, a hydrated iron oxide fixing glue 6, a silver iodide fixing glue 5, a Chelex100 fixing glue 4, a diffusion glue 3, a filter membrane 2 and a cover plate 1 with a window 8, wherein the diffusion glue 3 The thickness of the filter membrane 2 is 0.14mm, the thickness of the hydrated iron oxide fixing glue 6 is 0.40mm, the thickness of the silver iodide fixing glue 5 is 0.60mm, and the thickness of the Chelex100 fixing glue 4 is 0.40mm.
[0049] Correspondingly, the thickness of the diffusion layer of the DGT probe described in this embodiment for phosphorus is: filter membrane 2+diffusion glue 3+Chelex-100 fixing glue+silver iodide fixing glue 5=1.53mm; the thickness of the diffusion layer for sulfur is : filter membrane 2+diffusion glue 3+Chelex-100 fixing glue=0.93mm; the thickness of the diffusion layer for metal is: fi...
Embodiment 2
[0052] The three-layer fixing gel DGT probe described in this embodiment includes a substrate 7 for connection, a hydrated iron oxide fixing glue 6, a Chelex100 fixing glue 4, a silver iodide fixing glue 5, a diffusion glue 3, a filter membrane 2 and a The cover plate 1 of 8, wherein the thickness of the diffusion glue 3 is 0.39mm, the thickness of the filter membrane 2 is 0.14mm, the thickness of the hydrated iron oxide fixing glue 6 is 0.40mm, the thickness of the silver iodide fixing glue 5 is 0.60mm, and the Chelex100 fixing glue 4 The thickness is 0.40mm.
[0053] Correspondingly, the thickness of the diffusion layer of the DGT probe described in this embodiment for phosphorus is: filter membrane 2+diffusion glue 3+Chelex-100 fixing glue+silver iodide fixing glue 5=1.53mm; the thickness of the diffusion layer for metal is : filter membrane 2+diffusion glue 3+silver iodide fixing glue 5=1.13mm; the thickness of the diffusion layer for chalcogen is: filter membrane 2+diffus...
Embodiment 3
[0056] The immobilized gel DGT probe described in this example is as image 3 and Figure 4 As shown, it includes: the first cover plate 11, the first filter membrane 21, the first diffusion glue 31, the hydrated iron oxide fixing glue 6, the substrate 7, the silver iodide fixing glue 5, the Chelex-100 fixing glue, the second Diffusion glue 32, the second filter membrane 22 and the second cover plate 12, wherein the thickness of the first diffusion glue 31 and the second diffusion glue 32 is 0.39mm, the thickness of the first filter membrane 21 and the second filter membrane 22 Both are 0.14mm, the thickness of hydrated iron oxide fixing glue 6 is 0.40mm, the thickness of silver iodide fixing glue 5 is 0.60mm, and the thickness of Chelex100 fixing glue 4 is 0.40mm.
[0057] For the fixed glue DGT probe described in this embodiment, the thickness of the diffusion layer for metal is: the second filter membrane 22+the second diffusion glue 32=0.53mm; the thickness of the diffusi...
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