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Method for measuring acrylic acid content of polypropylene tow adhesive for tobacco

A measurement method, the technology of acrylic fiber glue, applied in the field of tobacco, can solve the problems of unestablished safety and health indicators and corresponding measurement methods, achieve high sensitivity and precision, easy operation, and prevent potential harm to health.

Active Publication Date: 2011-02-09
ZHENGZHOU TOBACCO RES INST OF CNTC +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no corresponding national standard or industry standard for acrylic fiber used in cigarettes. The measurement items are mainly physical indicators, and safety and hygiene indicators and corresponding measurement methods have not been established.

Method used

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  • Method for measuring acrylic acid content of polypropylene tow adhesive for tobacco
  • Method for measuring acrylic acid content of polypropylene tow adhesive for tobacco
  • Method for measuring acrylic acid content of polypropylene tow adhesive for tobacco

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of working standard solution

[0039] Single standard stock solution: use ultrapure water as solvent to prepare a standard stock solution of acrylic acid with a concentration of 0.1 mg / ml, and store it at 0°C to 4°C for 6 months.

[0040] Working standard solution: Based on the above-mentioned standard stock solution of acrylic acid, dilute to volume with ultrapure water, prepare a series of standard working solutions of acrylic acid according to Table 1, ready to use.

[0041] Table 1 Working standard solution series

[0042] Standard solution series

1#

2#

3#

4#

5#

6#

Acrylic acid (μg / ml)

10

2

1

0.4

0.2

0.1

[0043] Preparation of sample solution

[0044] Weigh 1.0062g of acrylic fiber sample for cigarettes, accurate to 0.1mg, into a 50ml volumetric flask, add ultrapure water to make up volume and mix well for extraction, pipette 5ml of the extraction solution into a centri...

Embodiment 2

[0084] The difference with Example 1 is:

[0085] Under "Determination Method" item: 0.1% (volume percent) phosphoric acid aqueous solution-acetonitrile volume ratio is 85:15, column temperature is 20 ℃, flow rate is 0.8ml / min, injection volume is 15 μ l, detection wavelength is 205.0nm.

[0086] Under the item "Preparation of sample solution": 0.8491 g of acrylic gum sample for cigarettes, the centrifugation temperature is 25° C., the rotation speed is 10,000 rpm, and the centrifugation time is 30 minutes.

[0087] Others are all the same as in Example 1.

[0088] According to the conditions of the "determination method" item of this embodiment, the working standard solution series, sample solution and blank acrylic gum sample solution of acrylic acid are injected and measured respectively, and the regression equation is obtained: y=70.81x+1.43, R 2 =0.9997, the chromatogram of the acrylic acid standard working solution with a concentration of 2 μg / ml is as follows image 3...

Embodiment 3

[0111] The difference with Example 1 is:

[0112] Under "Measurement method": 0.1% (volume percent) phosphoric acid aqueous solution-acetonitrile volume ratio is 90:10, column temperature is 40°C, flow rate is 1.2ml / min, sample volume is 20 μl, detection wavelength is 210.0nm.

[0113] Under "Preparation of sample solution": 1.2301g of acrylic gum sample for cigarettes, the temperature of centrifugation extraction is 22°C, the rotation speed is 11000rpm, and the centrifugation time is 25min.

[0114] Others are all the same as in Example 1.

[0115] According to the conditions of the "determination method" item of this embodiment, the working standard solution series, sample solution and blank acrylic fiber glue sample solution of acrylic acid are injected and measured respectively, and the regression equation is obtained: y=72.72x-0.71, R 2 =0.9999, the chromatogram of the acrylic acid standard working solution with a concentration of 2 μg / ml is as follows Figure 5 As show...

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Abstract

The invention belongs to the technical field of tobacco and particularly discloses a method for measuring the acrylic acid content of a polypropylene tow adhesive for tobacco. The method comprises the following steps of: extracting acrylic acid in a polypropylene tow adhesive sample for the tobacco with water; separating to obtain the solution of polypropylene tow adhesive sample; and quantificationally measuring the acrylic acid content of the solution of polypropylene tow adhesive sample by using a high performance liquid chromatograph and an ultraviolet detector by an external standard method, wherein chromatographic conditions are that: a chromatographic column is a C18 reversed-phase chromatographic column; 0.1 volume percent aqueous solution of phosphoric acid-acetonitrile is taken as a mobile phase and the volume ratio of the aqueous solution of phosphoric acid to the acetonitrile is 85:15-95:5; an elution mode is isocratic elution; the column temperature is between 20 and 40 DEG C; the flow rate is between 0.8 and 1.2 ml / min; the sample size is between 10 and 20 mu l; and a detection wavelength is between 200.0 and 210.0 nanometers. The method of the invention is easy and convenient to operate and has high accuracy, sensitivity, precision and repeatability.

Description

technical field [0001] The invention belongs to the technical field of tobacco, and in particular relates to a method for determining the content of acrylic acid in acrylic gum for cigarettes. Background technique [0002] Acrylic fiber glue for cigarettes is one of the materials for cigarettes, and it is mainly used for bonding polypropylene silk fibroin filter rods when they are formed. Propylene glue for cigarettes is mainly formed by homopolymerization or copolymerization of monomers such as acrylate compounds, vinyl acetate, and acrylic acid, and then adding certain additives. Affected by conditions such as production raw materials and operating techniques during the production process, a small amount of acrylic acid may remain in the acrylic gel for cigarettes. [0003] Acrylic acid and its series of products have developed rapidly in recent years and have become important raw materials for the polymer chemical industry. Acrylic acid and its esters are mainly used as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/89
Inventor 陈连芳李峰韩冰韩云辉黄菲戴云辉牛佳佳胡念念夏建军胡静庹苏行廖头根银董红詹建波李世勇
Owner ZHENGZHOU TOBACCO RES INST OF CNTC