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Method for measuring boric acid in water-based adhesive for cigarettes

A technology for cigarette water-based glue and determination method, which is applied in the preparation of test samples, measuring devices, material analysis by electromagnetic means, etc. High accuracy and good stability

Inactive Publication Date: 2012-09-19
HONGYUN HONGHE TOBACCO (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for determining the content of boric acid in tobacco water-based adhesives for the technical deficiencies of existing methods such as cumbersome sample pretreatment, low sensitivity, and poor reproducibility. Provide data support for the selection and monitoring of tobacco water-based adhesives for manufacturers, and then provide technical support for a more scientific assessment of the health hazards of smoking, as well as for the selection of auxiliary materials and harm reduction and coke reduction in cigarette product research and development.

Method used

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  • Method for measuring boric acid in water-based adhesive for cigarettes
  • Method for measuring boric acid in water-based adhesive for cigarettes
  • Method for measuring boric acid in water-based adhesive for cigarettes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. The use of instruments and instrument working conditions

[0036] 1.1 Instrument used: Inductively coupled plasma mass spectrometer (ICP-MS), model: PE Elan DRC-e

[0037] 1.2 Instrument working conditions, see Table 1

[0038] Table 1 The working condition parameters of ICP-MS

[0039] Working Condition Parameters Parameters

set valueValue

Vacuum (Torr)

≤1.2×10 -6

Atomizer flow rate (L min -1 )

0.68

Auxiliary gas flow (L min -1 )

1.2

Plasma gas flow (Ar) (L min -1 )

15

RF power (W)

1300

scan mode

Peak Jumping

scan times

20

Ion lens voltage (volts)

6.3

Pulse voltage (volts)

950

repeat times

4

Cleaning time / s

20

CeO oxide

≤0.03

Double charge (Ba++)

≤0.03

[0040] 2. Using Reagents

[0041] 2.1 The experimental water is the second-grade water specified in GB6682, and the chemi...

Embodiment 2

[0072] The difference with Example 1 is:

[0073] 1. Measuring method Under the working conditions of the instrument: the nebulizer flow rate is 0.67L / min, and the ion lens voltage is 6.4v.

[0074] 2. Under the preparation of the sample solution: weigh 0.4g of the tobacco water-based adhesive sample, accurate to 0.1mg, and pre-digest for 14h.

[0075] 3. Others are the same as in Example 1.

[0076] 4. Measure the boron standard blank solution, boron standard series solution, blank sample solution, and tobacco water-based glue sample solution according to the instrument working conditions of the "measurement method" item of this embodiment, and obtain the calibration curve regression equation: Y=0.010934X -0.000001, correlation coefficient R: 0.999991 The content of boric acid in the tobacco water-based adhesive was converted by the result calculation formula, and the content of boric acid in the tobacco water-based adhesive of 10 different brands was measured. The results a...

Embodiment 3

[0081] The difference with Example 1 is:

[0082] 1. Measuring method Under the working conditions of the instrument: the nebulizer flow rate is 0.66L / min, and the ion lens voltage is 6.0v.

[0083] 2. Under the item of sample solution preparation: weigh 0.6g of tobacco water-based adhesive sample, accurate to 0.1mg, and pre-digest for 16h.

[0084] 3. Others are the same as in Example 1.

[0085] 4. Measure the boron standard blank solution, boron standard series solution, blank sample solution, and tobacco water-based glue sample solution according to the instrument working conditions of the "measurement method" item of this embodiment, and obtain the calibration curve regression equation: Y=0.065521X +0.000003, R: 0.999983, the content of boric acid in the tobacco water-based adhesive was converted by the result calculation formula, and the content of boric acid in the tobacco water-based adhesive sample No. 12 was measured to be 1.790 μg / g.

[0086] 5. Precision test:

...

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Abstract

The invention discloses a method for measuring boric acid in a water-based adhesive for cigarettes, which comprises the following steps: accurately weighing a certain amount of water-based adhesive sample for cigarettes, putting the water-based adhesive sample for cigarettes in a microwave digestion tank, adding nitric acid (HNO3) and oxydol (H2O2) to perform pre-digestion, tightening to seal the digested water-based adhesive sample solution for cigarettes in the microwave digestion tank, and introducing the sample solution into an inductive coupling plasma emission spectrum mass spectrometer to carry out detection; and detecting characteristic ion strength of boron (B) element and on-line internal standard germanium (Ge) element in the sample solution, carrying out quantitative determination by an internal standard calibration curve method, calculating the content of B element in the water-based adhesive for cigarettes, and acquiring the content of HBO3 by using the reduction coefficient. The method disclosed by the invention has the advantages of high test accuracy, high sensitivity and favorable repetitiveness, and is simple to operate. The invention is suitable for technical personnel in tobacco industry and cigarette adhesive production enterprises to carry out quantitative determination on HBO3 in the water-based adhesive for cigarettes, and fills up the blank in the technical field.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical testing of cigarette materials, and in particular relates to a method for measuring boric acid content in water-based glue for cigarettes. Background technique [0002] With the widespread concern on "smoking and health" worldwide and the official signing of the FCTC agreement, the control of elements harmful to human health in cigarette products has become the focus of the tobacco industry. Tobacco water-based glue is an indispensable substance in the cigarette production process, and it is also a key material that reflects the characteristics of cigarette technology. Therefore, the quality control of water-based glue has always been a matter of great concern to tobacco companies. At present, most of the adhesives used in domestic cigarette production are chemically synthesized water-based adhesives. According to the relevant testing standards for tobacco water-based adhesives, visc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N1/44
Inventor 王文元者为段焰青夏建军蒋举兴刘亚杨丽萍
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD
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