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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  • Abstract
  • Description
  • Claims
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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

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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

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[0035] Example 1

[0036] A low-Ci tobacco solids phase extraction sorbent preparation method, comprising the steps of:

[0037] . S1 was weighed Dayefukao certain amount, the low-order tobacco warehouse, was cut into 0.5 cm length pieces to obtain pieces of cut tobacco;

[0038] . S2 The pieces of cut tobacco was added 5 times the mass ratio, 0.5mol / L NaOH solution at 50 deg.] C water bath for 3h, then filtered off with suction, the filtrate was removed, to obtain pieces of cut tobacco residue;

[0039] S3. The residue was neutralized with pieces of cut tobacco wrapped in three layers of filter paper speed, is placed in a Soxhlet extractor, 10 times the mass of distilled water was added, heated to boiling, condensed reflux 3h, to give a crude product TOBACCO LEAF adsorbent solid phase extraction ;

[0040] S4. TOBACCO LEAF The solid phase extraction sorbent crude product was cooled to room temperature, the low-speed time from tobacco solid phase extraction sorbent crude product ...

Example Embodiment

[0041] Example 2

[0042] A low-Ci tobacco solids phase extraction sorbent preparation method, comprising the steps of:

[0043] . S1 was weighed Dayefukao certain amount, the low-order tobacco warehouse, was cut into 1.2 cm length pieces to obtain pieces of cut tobacco;

[0044] . S2 The pieces of cut tobacco was added 10 times the mass ratio, 2 mol / L NaOH solution at 60 ℃ at 5 h, and then filtered off with suction, the filtrate was removed, to obtain pieces of cut tobacco residue;

[0045] S3. The residue was neutralized with pieces of cut tobacco wrapping paper speed layer 4, solid phase extraction sorbent crude product was placed in a Soxhlet extractor, 20 times the mass of distilled water was added, heated to boiling, condensed reflux 5h, to obtain TOBACCO LEAF ;

[0046] S4. TOBACCO LEAF The solid phase extraction sorbent crude product was cooled to room temperature, the low-speed time from tobacco solid phase extraction sorbent crude product was taken out of the filter pa...

Example Embodiment

[0047] Example 3

[0048] A low-Ci tobacco solids phase extraction sorbent preparation method, comprising the steps of:

[0049] . S1 was weighed Dayefukao certain amount, the low-order tobacco warehouse, it was cut into pieces 1 cm length, to obtain pieces of cut tobacco;

[0050] . S2 was added to the shredded tobacco 8 times the mass ratio, 1 mol / L NaOH solution at 55 ℃ water bath for 4 h, then filtered off with suction, the filtrate was removed, to obtain pieces of cut tobacco residue;

[0051] S3. The crude product was shredded tobacco residue adsorbent solid phase extraction medium speed filter paper wrap layer 3 placed in a Soxhlet extractor, 15 times the mass of distilled water, heated to boiling, condensed reflux 4h, to give TOBACCO LEAF ;

[0052] S4. TOBACCO LEAF The solid phase extraction sorbent crude product was cooled to room temperature, the low-speed time from tobacco solid phase extraction sorbent crude product was taken out of the filter paper, 55 deg.] C and ...

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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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