A kind of copper ion rapid detection test paper and preparation method thereof
A technology of copper ion detection and test paper, which is applied in the direction of analyzing the material through chemical reaction and analyzing the material through observing the influence of the chemical indicator, so as to achieve the effect of simple production, convenient use and high cost
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Embodiment 1
[0024] Step 1), prepare the dipping solution. Dissolve 0.8g of soluble starch in hot water (around 50°C), dilute to 100ml, and prepare impregnating solution A; dissolve 1.5g of salicylaldehyde-8-quinolinyloxyacetylhydrazone in DMSO, and dilute to volume to 100ml to prepare impregnation solution B;
[0025] Step 2), fully soak the filter paper strip in the prepared soaking solution A for 5 minutes, take it out, and dry it at room temperature; then fully soak it in the soaking solution B for 2 minutes, take it out, and dry it at room temperature;
[0026] Step 3), cut the dried filter paper block into a certain size, and obtain the copper ion detection test strip;
[0027] Step 4), the Cu 2+ Concentrations were 1×10 -2 g / L, 5×10 -3 g / L, 1×10 -3 g / L, 5×10 -4 g / L, 1×10 -4 Dip and drop the g / L sample on the test paper, let it stand for 1 minute, and record the color development result. If the test paper shows yellow, it is a positive detection. If the test paper does not dev...
Embodiment 2
[0029] Step 1), prepare the dipping solution. Dissolve 0.5g of soluble starch in hot water, dilute to 100ml, and prepare impregnation solution A; dissolve 1g of salicylaldehyde-8-quinolinyloxyacetylhydrazone in DMF, and dilute to 100ml to prepare impregnation solution B;
[0030] Step 2), fully soak the filter paper strip in the prepared soaking solution A for 5 minutes, take it out, and dry it at room temperature; then fully soak it in the soaking solution B for 2 minutes, take it out, and dry it at room temperature;
[0031] Step 3), cut the dried filter paper block into a certain size, and obtain the copper ion detection test strip;
[0032] Step 4), the Cu 2+ Concentrations were 1×10 -2 g / L, 5×10 -3 g / L, 1×10 -3 g / L, 5×10 -4 g / L, 1×10 -4 Dip and drop the g / L sample on the test paper, let it stand for 1 minute, and record the color development result. If the test paper shows yellow, it is a positive detection. If the test paper does not develop color or it is difficu...
Embodiment 3
[0034] Step 1), prepare the dipping solution. Dissolve 0.1g of soluble starch in hot water, dilute to 100ml, and prepare impregnation solution A; dissolve 0.1g of salicylaldehyde-8-quinolinyloxyacetylhydrazone in acetonitrile, and dilute to 100ml to prepare impregnation solution A. Liquid B;
[0035] Step 2), fully soak the filter paper strip in the prepared soaking solution A for 5 minutes, take it out, and dry it at room temperature; then fully soak it in the soaking solution B for 2 minutes, take it out, and dry it at room temperature;
[0036] Step 3), cut the dried filter paper block into a certain size, and obtain the copper ion detection test strip;
[0037]Step 4), the Cu 2+ Concentrations were 1×10 -2 g / L, 5×10 -3 g / L, 1×10 -3 g / L, 5×10 -4 g / L, 1×10 -4 Dip and drop the g / L sample on the test paper, let it stand for 1 minute, and record the color development result. If the test paper shows yellow, it is a positive detection. If the test paper does not develop co...
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