Method for determining nitrate and nitrite ions in cigarette tipping paper

A technology of nitrite ion, cigarette tipping paper, applied in the direction of measuring device, material separation, instrument, etc., to achieve the effect of simple operation, prolonged service life and good repeatability

Inactive Publication Date: 2012-11-28
HONGYUN HONGHE TOBACCO (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the detection method of nitrate and nitrite ions in cigarette tipping paper

Method used

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  • Method for determining nitrate and nitrite ions in cigarette tipping paper
  • Method for determining nitrate and nitrite ions in cigarette tipping paper
  • Method for determining nitrate and nitrite ions in cigarette tipping paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 The flow shown is to determine the content of nitrate and nitrite ions in cigarette tipping paper.

[0032] (1) Preparation of standard working solution: Standard solutions of nitrate and nitrite ions were purchased from the National Material Center, the concentrations were: 1000 μg / mL, specific preparation of standard working solutions of nitrate and nitrite ions with concentration gradients The method is: pipette 1 mL of 1000 μg / mL NO 3 - and NO 2 - Standard solution, dilute to 100mL volumetric flask with deionized water to obtain NO concentration of 10μg / mL 3 - and NO 2 - For the primary standard solution, take 0.1mL, 0.2mL, 0.5mL, 1.0mL, 2.0mL, and 5.0mL primary standard solution respectively, and dilute it to a 10mL volumetric flask with deionized water to obtain a standard solution with the following concentration: 0.1mg / L, 0.2mg / L, 0.5mg / L, 1.0mg / L, 2.0mg / L, 5.0mg / L. The obtained standard working solution should be prepared and used imm...

Embodiment 2

[0051] The method of present embodiment measuring nitrate and nitrite ion content in cigarette tipping paper is as follows:

[0052] 1. Preparation of sample solution: Accurately cut a sample of cigarette tipping paper (should include a single side) with a length of 200mm and a width of 40mm. Place the cut sample on a balance and weigh it to an accuracy of 0.1mg, and use scissors to cut the sample into fragments no larger than 0.5cm×0.5cm, place the fragments in a 100mL Erlenmeyer flask with a stopper, and accurately add 40mL of deionized water, placed in a water bath at 60°C for 40 minutes, cooled to room temperature, and the supernatant was passed through a 0.22 μm water-based syringe filter and a C18 column (discard the first 3 mL) to obtain a sample solution, which was analyzed by IC.

[0053] 2, adopt the chromatographic condition analysis sample solution of embodiment 1;

[0054] 3, the chromatographic peak area that records nitrate and nitrite ion is brought into the s...

Embodiment 3

[0059] The present embodiment is specifically implemented as follows to the repeatability of the inventive method and the recovery rate of standard addition:

[0060] Select different samples according to the pretreatment method, measure the background value, add a certain concentration of mixed standard solution, and perform IC analysis after treatment according to the pretreatment method. Determination of the chromatographic analysis conditions is the same as in Example 1. According to the analysis results, the recovery of nitrate and nitrite ions in the tipping paper for cigarettes of this method and the relative standard deviation (n=5) of the measured value after the addition of the standard are calculated. The results As shown in Table 4:

[0061] Table 4 The results of standard addition recovery and relative standard deviation (n=5)

[0062]

[0063] It can be seen from Table 4 that NO 3 - The average recovery rate of 97.6%, NO 2 - The average recovery rate of 1...

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Abstract

The invention discloses a method for determining nitrate and nitrite ions in cigarette tipping paper. The method consists of: cutting a tipping paper sample and weighing it, dipping sample fragments in deionized water, conducting water bath extraction, then carrying out static cooling to room temperature; taking the supernatant, and passing it through a water-based filter membrane syringe needle filter and a C18 column, thus obtaining a sample solution; weighing a nitrate ion standard solution and a nitrite ion standard solution, adding deionized water to a constant volume, and then implementing dilution with deionized water so as to obtain standard working solutions; then implementing ion chromatograph (IC) analysis on the standard working solutions and the sample solution to measure the peak areas of nitrate and nitrite ions in the sample, and substituting the peak areas into standard curves so as to calculate the content of nitrate and nitrite ions in the sample. The quality can be determined by standard substance retention time, and the quantity can be determined by the peak areas. The method can accurately determine the content of nitrate and nitrite ions in a cigarette tipping paper sample, has the advantages of rapidity, reliability, simplicity and practicability, and fills in the blank of determination of nitrate and nitrite ions in cigarette tipping paper at present.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical inspection of cigarette tipping paper, and in particular relates to a method for measuring the content of nitrate and nitrite ions in cigarette tipping paper. Background technique [0002] Cigarette tipping paper is an indispensable and important part of the production of filter cigarettes. It is a special paper product for cigarettes produced through pre-press design, printing processing and post-press processing processes based on tipping paper base paper. Early tipping paper looks like pine grain or cork color, so it is called tipping paper and cork paper. Its function is to firmly connect the filter tip with the cigarette, so it is called tipping paper. [0003] Nitrate and nitrite are one of the most common chemical raw materials, which are widely used in food processing, ink manufacturing, chemical production, analytical reagents, etc. In recent years, studies have found that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/88
Inventor 范多青史小波王庆华者为李利君李响丽杨丽萍赵光飞高文军
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD
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