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Preparation method of 3-hydroxybenzaldehyde adsorbent, product thereof and application of 3-hydroxybenzaldehyde adsorbent

A hydroxybenzaldehyde and adsorbent technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of narrow application range, high detection cost, few types of mobile phases, etc., and achieve broad application prospects, simple operation, and time. short effect

Pending Publication Date: 2018-12-04
GUANGDONG GOLDEN LEAF TECH DEV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these detection methods require large-scale instruments and equipment, and the use and daily maintenance costs of these equipment are high, so they require high detection costs.
In addition, gas phase detection is limited by the volatility and thermal stability of the sample, the application range is narrow, and there are fewer types of mobile phases; the detection time of liquid phase is longer

Method used

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  • Preparation method of 3-hydroxybenzaldehyde adsorbent, product thereof and application of 3-hydroxybenzaldehyde adsorbent
  • Preparation method of 3-hydroxybenzaldehyde adsorbent, product thereof and application of 3-hydroxybenzaldehyde adsorbent
  • Preparation method of 3-hydroxybenzaldehyde adsorbent, product thereof and application of 3-hydroxybenzaldehyde adsorbent

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preparation example Construction

[0031] According to a first aspect of the present invention, in a preferred embodiment, the preparation method of 3-hydroxybenzaldehyde adsorbent comprises the following steps:

[0032] S1: Accurately weigh methacrylic acid (0.2-0.3mmol), N-isopropylacrylamide, N,N-dimethylbisacrylamide, ultrasonically dissolve in 80mL water; then add N-tert-butylacrylamide Absolute ethanol (1mL) solution, ultrasonic degassing for 10min;

[0033] S2: After adjusting pH=6.0, add 3-hydroxybenzaldehyde as a template molecule;

[0034] Among them, the template molecules are added in the following molar ratios:

[0035] MIP-1: (methacrylic acid: template molecule = 1:2)

[0036] MIP-2: (methacrylic acid: template molecule = 1:4)

[0037] MIP-3: (methacrylic acid: template molecule = 1:8)

[0038] MIP-4: (methacrylic acid: template molecule = 1:16)

[0039] S3: Slowly add the aqueous solution of the initiator (ammonium persulfate, sodium bisulfite and sodium lauryl sulfate) dropwise, and polyme...

Embodiment 1

[0047] Accurately weigh methacrylic acid (0.2mmol), N-isopropylacrylamide (0.4mmol), N,N-dimethylbisacrylamide (2mmol) dissolved in 80mL distilled water, N-tert-butylacrylamide (0.2 mmol) was dissolved in 1 mL of absolute ethanol, and ultrasonicated for 10 min; then, the pH was adjusted to 6.0 with NaOH, and 1.6 mmol of the template molecule (3-hydroxybenzaldehyde) (dissolved in distilled water) was added, shaken at 70 rpm for 4 hours at a constant temperature (35°C); then , slowly drop the aqueous solution of the initiator (ammonium persulfate (60.0 mg), sodium bisulfite (20.0 mg), sodium lauryl sulfate (40.0 mg) dissolved in 20 mL of distilled water), and polymerize at 35 ° C 24h;

[0048] After the reaction is complete, use ethanol-chloroform as the extractant, and use a Soxhlet extractor to reflux overnight to elute the template molecule (3-hydroxybenzaldehyde) to obtain a crude molecularly imprinted polymer;

[0049] The molecularly imprinted polymer crude product is dia...

Embodiment 2

[0053] ①Preparation of adsorbent solution (1mg / mL)

[0054] Accurately weigh 6.0 mg of 3-hydroxybenzaldehyde adsorbent MIP-3 and ultrasonically dissolve it in 6.0 mL of distilled water to prepare a 1 mg / mL adsorbent solution;

[0055] ②Determination of 3-hydroxybenzaldehyde concentration-UV absorbance standard curve (10, 5, 4, 2, 1, 0.5, 0.2, 0.1 μg / mL)

[0056] Purchase or prepare a standard solution of 100 μg / ml 3-hydroxybenzaldehyde by yourself: accurately weigh 2.0 mg of 3-hydroxybenzaldehyde and dissolve in 20.0 ml of absolute ethanol.

[0057] Preparation of 10μg / ml 3-hydroxybenzaldehyde solution: 1ml 100μg / ml 3-hydroxybenzaldehyde solution + 9ml absolute ethanol; preparation of 5μg / ml 3-hydroxybenzaldehyde solution: 5ml 10μg / ml 3-hydroxybenzaldehyde solution +5ml absolute ethanol; preparation of 4μg / ml 3-hydroxybenzaldehyde solution: 2ml 10μg / ml 3-hydroxybenzaldehyde solution+3ml absolute ethanol; preparation of 2μg / ml 3-hydroxybenzaldehyde solution: 2ml 5μg / ml 3 -Hyd...

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Abstract

The invention belongs to the technical field of tobacco detection, in particular relates to a preparation method of a 3-hydroxybenzaldehyde adsorbent, and further relates to the 3-hydroxybenzaldehydeadsorbent prepared by the preparation method, and an application of the 3-hydroxybenzaldehyde adsorbent. The preparation method of the 3-hydroxybenzaldehyde adsorbent includes the following steps: weighing methacrylic acid, N-isopropyl acrylamide, and N, N-dimethyl bisacrylamide, and ultrasonically dissolving the weighed materials in water; adding a N-tert-butyl acrylamide anhydrous ethanol solution, and conducting ultrasonic degassing; adjusting pH to be 6.0, and adding 3-hydroxybenzaldehyde as a template molecule; adding dropwise an initiator aqueous solution, and carrying out a polymerization reaction; after the reaction is complete, eluting the template molecule to obtain a molecularly imprinted polymer crude product; and dialyzing the molecularly imprinted polymer crude product, and freeze-drying the obtained dialyzate to obtain molecularly imprinted polymer solid powder, namely the 3-hydroxybenzaldehyde adsorbent.

Description

technical field [0001] The invention belongs to the technical field of tobacco detection, and particularly relates to a preparation method of a 3-hydroxybenzaldehyde adsorbent, and also relates to a 3-hydroxybenzaldehyde adsorbent prepared by the preparation method, and the 3-hydroxybenzaldehyde adsorbent. application. Background technique [0002] As we all know, the tobacco smoke produced after the cigarette is lit contains at least 69 known carcinogens; among them, the main harmful chemicals include 5 categories: (1) aldehydes and nitrogen compounds, which are irritating to the respiratory tract; (2) nicotine, which can stimulate the sympathetic nerves and make smokers dependent; (3) amines, cyanides and heavy metals, which are all toxic substances; (4) benzopyrene, arsenic, and other radioactive substances, which all have Carcinogenic effect; (5) carbon monoxide, which can greatly reduce the ability of red blood cells to transport oxygen to the whole body. [0003] Amo...

Claims

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Application Information

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IPC IPC(8): C08J9/28C08F222/38C08F220/06C08F220/54B01J20/26
CPCB01J20/268C08F222/385C08J9/286C08J2335/00C08F220/06C08F220/54
Inventor 傅源锋李正勇赵闯王磊管传莉陈泽鹏陈桢禄文志强
Owner GUANGDONG GOLDEN LEAF TECH DEV
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