Simple and low-cost silver ion visual quantitative detection method
A quantitative detection method and low-cost technology, applied in the field of visual quantitative detection of silver ions, can solve the problems of inability to use real-time detection, high analysis cost, bulky volume, etc., and achieve specific portable qualitative and quantitative detection. The detection process is simple and broad. The effect of the application foreground
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Embodiment 1
[0018] This example uses a simple and low-cost visual quantitative detection method for silver ions to analyze 1 mM Ag containing + aqueous solution (A) and a blank sample (Ultrapure water without Ag+, B).
[0019] The specific implementation process is as follows:
[0020] Such as figure 1 As shown, the specific steps of this embodiment are: Step 1, 50 μL of 1 mM silver nitrate (AgNO 3 ) aqueous solution was added dropwise to a plastic transparent test tube with graduations on the outer wall containing 100 μL of 2.5 mM TMB solution (prepared from formamide that is miscible with water and has a density of 1.134 g / mL at 25°C); step 2, visually inspect Observe and directly read the scale on the outer wall of the transparent test tube related to the length of the blue solution in the transparent test tube, the length of which is the same as the Ag + Concentrations are positively correlated, i.e. complete Ag + visual quantitative detection.
[0021] The blank sample, i.e. ult...
Embodiment 2
[0023] In this example, a simple and low-cost visual quantitative detection method for silver ions was used to analyze Ag with a concentration range of 62.5 μM to 4 mM. + aqueous solution.
[0024] The specific implementation process is as follows:
[0025] Such as figure 1 As shown, each Ag detected in this embodiment + The specific steps of the aqueous solution are as follows: step 1, 50 μL of a certain concentration of AgNO 3 The aqueous solution was added dropwise to a plastic transparent test tube with graduations on the outer wall containing 100 μL of 2.5 mM TMB solution (prepared from formamide that is miscible with water and has a density of 1.134 g / mL at 25°C); step 2, visually observe, Directly read the scale on the outer wall of the transparent test tube relative to the length of the blue solution in the transparent test tube. All Ag + The length value of the colored solution of the aqueous solution (that is, the scale value on the outer wall of the transparent...
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