A kind of copper ion detection test paper and the method for detecting copper ion in water
A copper ion detection and copper ion technology, applied in the field of ion detection, can solve problems such as unsuitable on-site detection or large-scale application, complex sample pretreatment process, difficult colorimetric detection, etc., to achieve fast detection speed and anti-interference High capacity and low cost effect
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[0029] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings.
[0030] one. A test paper for detecting copper ions, using cellulose filter paper as the adsorption base layer, with nano-titanium dioxide and hydrazine functionally modified diamino groups on it, so as to realize the specific adsorption of copper ions and then achieve the purpose of pre-enrichment.
[0031] two. The preparation method of above-mentioned copper ion detection test paper, see figure 1 , including the following steps:
[0032] 1) Soaking modification: Soak the cellulose filter paper in absolute ethanol for 2 hours, and dry it at 60°C for 10 minutes.
[0033] 2) Titanium dioxide treatment: Soak the filter paper treated in step 1) in titanium solution, place it on a shaker and shake it for 30 minutes, wipe off the excess liquid on the surface of the filter paper, and dry it at 60°C for 15 minutes; repeat the above operation twice...
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