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Preparation method and application of low-grade tobacco leaf solid-phase extraction adsorbent

An adsorbent and tobacco leaf technology, applied in the field of extraction and analysis, can solve the problems of poor stability of adsorption effect, large recovery pollution, low adsorption efficiency, etc., and achieve the effect of rich pore structure, simple method and strong adsorption capacity

Pending Publication Date: 2021-12-31
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The Chinese patent with the publication number CN201611225093.3 discloses a method for the enrichment and purification of Yunnan olive polyphenols. The selective adsorption of LiChrolut EN resin is used to selectively adsorb the Yunnan olive polyphenols, but the adsorption effect is poor in stability and the adsorption low efficiency
[0008] The fillers used in the prior art have the problems of low adsorption efficiency, expensive raw materials, and high pollution after use.

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  • Preparation method and application of low-grade tobacco leaf solid-phase extraction adsorbent
  • Preparation method and application of low-grade tobacco leaf solid-phase extraction adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of preparation method of solid-phase extraction adsorbent of low grade tobacco leaf, comprises the following steps:

[0037] S1. Weighing a certain amount of low-grade tobacco leaves that have been threshed and rebaked and stored, and cut into 0.5 cm long and short pieces to obtain broken tobacco leaves;

[0038] S2. adding 5 times the mass ratio of the crushed tobacco leaves, 0.5mol / L NaOH solution, bathing in water at 50°C for 3h, then suction filtration, removing the filtrate to obtain the crushed tobacco leaf filter residue;

[0039] S3. Wrap the broken tobacco leaf filter residue with 3 layers of medium-speed filter paper, place it in a Soxhlet extractor, add 10 times the quality of distilled water, heat to boiling, condense and reflux for 3 hours, and obtain the crude product of the low-order tobacco solid phase extraction adsorbent ;

[0040] S4. Cool the low-grade tobacco solid-phase extraction adsorbent crude product to room temperature, take out the lo...

Embodiment 2

[0042] A kind of preparation method of solid-phase extraction adsorbent of low grade tobacco leaf, comprises the following steps:

[0043] S1. Weighing a certain amount of low-grade tobacco leaves that have been threshed and rebaked and stored, and cut into pieces of 1.2 cm in length to obtain broken tobacco leaves;

[0044] S2. adding 10 times the mass ratio of the crushed tobacco leaves to a 2 mol / L NaOH solution, bathing in water at 60°C for 5 h, and then suction filtering to remove the filtrate to obtain the crushed tobacco leaf filter residue;

[0045] S3. Wrap the broken tobacco leaf filter residue with 4 layers of medium-speed filter paper, place it in a Soxhlet extractor, add 20 times the quality of distilled water, heat to boiling, condense and reflux for 5 hours, and obtain the crude product of the low-order tobacco solid-phase extraction adsorbent ;

[0046] S4. Cool the low-grade tobacco leaf solid-phase extraction adsorbent crude product to room temperature, take...

Embodiment 3

[0048] A kind of preparation method of solid-phase extraction adsorbent of low grade tobacco leaf, comprises the following steps:

[0049] S1. Weighing a certain amount of low-grade tobacco leaves that have been threshed and rebaked and stored, and cut into pieces of 1 cm in length to obtain broken tobacco leaves;

[0050] S2. adding 8 times the mass ratio of the crushed tobacco leaves to a 1 mol / L NaOH solution, bathing in water at 55°C for 4 h, then suction filtering, removing the filtrate to obtain the crushed tobacco leaf filter residue;

[0051] S3. Wrap the broken tobacco leaf filter residue with 3 layers of medium-speed filter paper, place it in a Soxhlet extractor, add 15 times the quality of distilled water, heat to boiling, condense and reflux for 4 hours, and obtain the crude product of low-order tobacco solid-phase extraction adsorbent ;

[0052] S4. Cool the low-grade tobacco solid-phase extraction adsorbent crude product to room temperature, take out the low-gra...

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Abstract

The invention discloses a preparation method and application of a low-grade tobacco leaf solid-phase extraction adsorbent; the preparation method comprises the following steps: s1, shearing low-grade tobacco leaves to obtain broken tobacco leaves; s2, adding the crushed tobacco leaves into a strong alkali solution, heating and refluxing in a water bath, and filtering to obtain crushed tobacco leaf filter residues; s3, coating the crushed tobacco leaf filter residues with multiple layers of medium-speed filter paper, and cleaning the crushed tobacco leaf filter residues with boiling water to obtain a low-grade tobacco leaf solid-phase extraction adsorbent crude product; s4, subjecting the low-grade tobacco leaf solid phase extraction adsorbent crude product to vacuum drying to obtain the low-grade tobacco leaf solid phase extraction adsorbent. The prepared adsorbent is environmentally friendly, low in cost and high in adsorption efficiency of a to-be-detected object.

Description

technical field [0001] The invention relates to the field of extraction analysis, in particular to a preparation method and application of a solid-phase extraction adsorbent for low-grade tobacco leaves. [0002] technical background [0003] With the rapid development of life sciences, environmental sciences, food safety and pharmaceuticals, synthetic chemistry, etc., the efficient and fast sample pretreatment technology that matches it has attracted widespread attention. Among them, solid phase extraction (SPE) is an application A very wide range of sample pretreatment methods can be combined with chromatography and other techniques in offline and online ways to achieve the separation and analysis of analytes in complex samples. At present, alkyl bonded phases (such as C2, C8, C18) are the most common extraction materials used in solid phase extraction. These solid phase extraction packings can show adsorption properties for hydrophobic compounds. However, in many specific ...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30B01D15/08B01D15/22G01N30/02G01N30/06G01N30/08
CPCB01J20/24B01D15/08B01D15/22G01N30/02G01N30/06G01N30/08B01J2220/4825B01J2220/485B01J2220/4806G01N2030/027G01N2030/062Y02P10/20
Inventor 魏敏余琼卫朱雅琪宋旭艳何昀潞
Owner HUBEI CHINA TOBACCO IND
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