Iridium complex electrochemiluminescence kit for determining trace water in organic solvent
A chemiluminescence reagent and organic solvent technology, applied in the field of electrochemiluminescence kit development, can solve the problems of complex determination process, cumbersome reagent preparation, harsh preparation conditions, etc.
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example 1
[0015] Example 1, the glassy carbon electrode is made of Al with a diameter of 0.05 μm 2 o 3 The suspension was polished on suede, then ultrasonically cleaned in absolute ethanol and ultrapure water for 1 min each, and dried in the air. Prepare a series of 3mL acetonitrile standard solutions with different water contents, the water contents from low to high are (v / v): 0.00%, 0.01%, 0.02%, 0.04%, 0.06%, 0.08%, 0.10%, 0.12%. Then completely dissolve the substances in the iridium complex electrochemiluminescence kit respectively, connect the three-electrode system to the electrochemiluminescence instrument, and measure the ECL intensity (see attached figure 2 ), with the water content as the abscissa and the ECL intensity as the ordinate to draw the working curve (see attached image 3 ). Measure the water content in the actual acetonitrile sample solvent, and find out from the working curve that the water content in the acetonitrile sample solvent is 0.023%.
example 2
[0016] Example 2, the glassy carbon electrode is made of Al with a diameter of 0.05 μm 2 o 3 The suspension was polished on suede, then ultrasonically cleaned in absolute ethanol and ultrapure water for 1 min each, and dried in the air. Prepare a series of 3mL DMF standard solutions with different water contents, the water contents from low to high are (v / v): 0.00%, 0.01%, 0.02%, 0.04%, 0.06%, 0.08%, 0.10%, 0.12%. Then completely dissolve the substances in the iridium complex electrochemiluminescence kit respectively, connect the three-electrode system to the electrochemiluminescence instrument, measure the ECL intensity, take the water content as the abscissa, and the ECL intensity as the ordinate to draw a working curve (see the appendix Figure 4 ). Measure the water content in the actual DMF sample solvent, and find out from the working curve that the water content in the DMF sample solvent is 0.064%.
example 3
[0017] Example 3, the glassy carbon electrode is made of Al with a diameter of 0.05 μm 2 o 3 The suspension was polished on suede, then ultrasonically cleaned in absolute ethanol and ultrapure water for 1 min each, and dried in the air. Prepare a series of 3 mL dichloromethane standard solutions with different water contents, the water contents from low to high are (v / v): 0.00%, 0.01%, 0.02%, 0.04%, 0.06%, 0.08%, 0.10%, 0.12 %. Then completely dissolve the substances in the iridium complex electrochemiluminescence kit respectively, connect the three-electrode system to the electrochemiluminescence instrument, measure the ECL intensity, take the water content as the abscissa, and the ECL intensity as the ordinate to draw a working curve (see the appendix Figure 5 ). Measure the water content in the actual dichloromethane sample solvent, and find out from the working curve that the water content in the dichloromethane sample solvent is 0.047%.
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