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Method for detecting efficiency for intercepting phenol compound in flue gas by filter-tip

A technology of phenolic compounds and filters, which is applied in the field of detection of interception efficiency of phenolic compounds in smoke by filters, and can solve inaccurate detection of intercepted phenolic compounds, low detection limit and quantification limit, good test precision, etc. low detection limit and quantitative limit, true results, and good test precision

Active Publication Date: 2014-03-26
CHINA TOBACCO HUNAN INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the shortcomings of inaccurate detection and low recovery rate of the intercepted phenolic compounds in the filter due to incomplete extraction of the determination of the phenol intercepted in the filter in the prior art, and aims to provide a simple-to-operate, A method that can quickly and accurately determine the interception efficiency of filters for phenolic compounds directly and quantitatively. This method has good test precision, low detection limit and quantification limit, and is suitable for most of the existing mainstream filter interception and retention efficiency determination.

Method used

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  • Method for detecting efficiency for intercepting phenol compound in flue gas by filter-tip
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  • Method for detecting efficiency for intercepting phenol compound in flue gas by filter-tip

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Analysis of retained phenolic compounds in filters:

[0045] 1. Cutting of filter tip

[0046] Take the smoked 4 cigarette filters, cut them along the longitudinal direction of the filter axis from the far end to the near mouth end, wipe the blade with 1 / 4 glass fiber filter, after the cut filter and wipe the blade Put the glass fiber filter disc into a 125mL Erlenmeyer flask together, and the operator wears cotton gauze gloves during the process of scratching and wiping the filter disc;

[0047] 2. Extraction

[0048] Accurately add 50mL of extraction solution (a mixed solution of acetic acid, methanol, and water, the volume ratio is 1:79:20) to the Erlenmeyer flask in step 1; at room temperature, extract for 30min under ultrasonic power of 280W; let stand for 5min Finally, pipette 2mL of the extract, filter it with a 0.45μm organic filter membrane to be analyzed and determined, and the treated sample extract should be analyzed within 48h;

[0049] 3. The setting of...

Embodiment 2

[0058] Method recovery test:

[0059] Take cigarette samples A (activated carbon filter), C (acetate filter) and F (propylene fiber filter) respectively, and use the average value of five parallel measurements as the basis for calculating the original content of phenolic compounds. Standards with three concentration levels (the amount of added standard, high, middle and low concentration is about 2 times, 1 time, and 0.5 times the original content of the sample respectively) for recovery test. It can be seen from Tables 3 to 5 that the recovery rate of phenolic compounds in cigarette filters is between 93.35% and 104.50%, which shows that this method has a good recovery rate for the determination of most mainstream filters currently in use.

[0060] Table 3 method recovery rate

[0061]

[0062] Table 4 method recovery rate

[0063]

[0064]

[0065] Table 5 method recovery rate

[0066]

Embodiment 3

[0068] Method precision test

[0069] The intra-day and inter-day precision of this method was investigated in experiments, and the results are shown in Tables 6-7:

[0070] The precision test of the method in Table 6 (1)

[0071]

[0072]

[0073]

[0074] Table 7 The precision test of the method for determining the filter interception (2)

[0075]

[0076]

[0077] It can be seen that this method has good test precision for cigarette filter retained samples.

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Abstract

The invention discloses a method for detecting the efficiency for intercepting phenol compounds in flue gas by a filter-tip. The method comprises the following steps: longitudinally cutting a used cigarette filter-tip along an axis of the filter-tip by a blade, placing the cut cigarette filter-tip into an extract liquor, performing ultrasonic extraction, standing the obtained extract liquor, enabling the obtained extract liquor to pass through a filtering membrane, taking the filtering liquid to perform sample introduction, analyzing by adopting an HPLC (High Performance Liquid Chromatography) to measure the content of phenol compounds; calculating the intercepting efficiency of phenol compounds in the filter-tip through measuring the phenols in main stream smoke. The method can quickly, precisely, directly and quantitatively measure the interception amount and intercepting efficiency of phenol compounds by the filter-tip, and is simple to operate, excellent in measuring precision, and low in detection limit and quantitative limit, thereby being used for the measurement of the intercepting efficiency of most of the conventional mainstream filter-tips.

Description

technical field [0001] The invention relates to a method for detecting the interception efficiency of phenolic compounds in smoke by a filter tip, belonging to the technical field of tobacco detection. Background technique [0002] Phenolic compounds are an important class of substances present in cigarette smoke, mainly including hydroquinone, resorcinol, catechol, phenol, m-cresol, p-cresol, and o-cresol, and are related to the quality of tobacco. Closely related, phenolic compounds themselves are not carcinogenic, but have obvious cancer-promoting effects. Therefore, the research on phenolic compounds in smoke has been widely concerned by people. Cigarette smoke is a very complex mixture system, which contains more than 5,000 compounds, and there are more than 40 phenolic substances in cigarette smoke. Many analytical techniques have been applied to the analysis of phenols in cigarette smoke, such as Complex liquid-liquid extraction, column chromatography and derivatizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 胡念念戴云辉庹苏行李克王诗太谭海峰范红梅
Owner CHINA TOBACCO HUNAN INDAL CORP
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