Cigarette filter tip and cigarette
A filter and cigarette technology, applied in the field of finished cigarettes and cigarettes, to achieve the effect of reducing harm
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Embodiment 1
[0030] 1. Accurately weigh 0.1 g carboxymethyl chitosan.
[0031] 2. Prepare 20ml of Fe with different concentrations 2+ Solution (regulate pH with antioxidant), under the uniform stirring of magnetic stirrer, add 0.1g carboxymethyl chitosan, stir and react for a certain period of time, stand still.
[0032] 3. Suction filter the solution. At this time, pipette 2mL of filtrate and dilute to 100mL volumetric flask, then pipette 1mL of diluted filtrate, add 2mL of 0.5% o-phenanthroline reagent, and dilute to 50mL. Used to determine the absorbance A of the sample.
[0033] 4. Continue to wash the sample with 1:1 acetone ethanol, and then wash with 95% ethanol until the sample does not contain SO 4 2- (Use barium nitrate to check whether there is a white precipitate in the filtrate), and finally wash with absolute ethanol, and vacuum-dry to constant weight.
[0034] Carboxymethyl chitosan Fe(II) complex was prepared by complexation reaction, and the effect of different prepara...
Embodiment 2
[0036] 1. Quantitatively analyze CO with external standard method, and formulate a standard curve for carbon monoxide.
[0037] 2. Dilute CO with a purity of 99.9% with air to obtain different concentration gradients. Under the same conditions, inject a certain amount of diluted CO with a known concentration to obtain the peak area of CO in the gas sample;
[0038] 3. According to the response area of different concentrations of CO, the standard curve of CO was established;
[0039] 4. When detecting the concentration of unknown CO in the mixed gas, calculate the concentration of CO in the component according to the response area of the component and the standard curve of CO;
[0040] 5. Weigh a certain amount of adsorbent and put it into a sealed specific gravity bottle with a certain volume, and inject a certain amount of mixed gas of air and carbon monoxide with a syringe. After sealing again, under normal temperature and pressure, measure the content change of carbo...
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Abstract
Description
Claims
Application Information
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