Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for determining benzene, toluene, ethylbenzene, styrene and xylene in filter beads or capsules

A determination method and technology of styrene, applied in the field of chemical inspection of cigarette materials, can solve the problems of loss accuracy of volatile substances, complicated operation, difficult operation, etc., achieve simple and efficient pretreatment, high detection sensitivity, and avoid loss Effect

Inactive Publication Date: 2020-11-24
GANSU TOBACCO IND
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few reports on the safety testing of popping pearl products, and the research work mainly focuses on the analysis of its chemical composition.
In 2018, He Yuan et al. reported "GC / MS fingerprint and systematic clustering analysis for the determination of the content of popping beads for cigarettes", separated and identified the volatile and semi-volatile components of popping beads, and disclosed a The sample preparation method of popping beads (capsules) after grinding in a mortar, adding a solvent to dissolve, and then filtering is applied to the detection of popping beads (capsules) samples; but this processing method is complicated to operate and easily causes the loss of volatile chemical components
The advantage of this method is that it can detect more than 30 kinds of volatile organic compounds at the same time. However, it is difficult to pierce the explosive bead sample, especially the small particle size explosive bead is difficult to pierce. If the sample volume is large, the operation will be difficult. Larger, but also easy to cause the loss of volatile substances and reduce the accuracy of detection; another problem is that the last burst of the blasting beads cannot guarantee that all the content of the blasting beads will flow out, and the uniformity of the test samples is also difficult to guarantee

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for determining benzene, toluene, ethylbenzene, styrene and xylene in filter beads or capsules
  • Method for determining benzene, toluene, ethylbenzene, styrene and xylene in filter beads or capsules
  • Method for determining benzene, toluene, ethylbenzene, styrene and xylene in filter beads or capsules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Weigh 0.2g (accurate to 0.1mg) sample of popping beads (capsules) into a 20mL stoppered centrifuge tube, add 5mL of first-grade water, add 10μL of internal standard stock solution and 10.0mL of n-pentane, and wait until the popping beads (capsules) are completely Dissolve and shake for 10 minutes in a vortex shaker at a shaking speed of 2000r / min. After standing and stratifying, take 1mL supernatant in the chromatographic bottle, constant flow mode (flow rate 1mL / min), injection port temperature 240°C, injection volume 1μL, split injection (split ratio 10:1); temperature program : The initial temperature is 40°C, keep it for 3 minutes, raise it to 130°C at a rate of 10°C / min, keep it for 2 minutes, then increase it to 200°C at a rate of 20°C / min, and keep it for 2 minutes; 70eV, ion source temperature 230°C, quadrupole temperature 150°C, solvent delay time 2.5min. The quantitative analysis adopts the selective ion (SIM) mode segmented scanning mode, and performs quanti...

Embodiment 2

[0050] Weigh 0.2g (accurate to 0.1mg) sample of popping beads (capsules) into a 20mL stoppered centrifuge tube, add 5mL of first-grade water, add 10μL of internal standard stock solution and 10.0mL of n-pentane, and wait until the popping beads (capsules) are completely Dissolve, shake in a vortex shaker for 20min at a shaking speed of 2000r / min. After standing and stratifying, take 1mL supernatant in the chromatographic bottle, constant flow mode (flow rate 1mL / min), injection port temperature 240°C, injection volume 1μL, split injection (split ratio 10:1); temperature program : The initial temperature is 40°C, keep it for 3 minutes, raise it to 130°C at a rate of 10°C / min, keep it for 2 minutes, then increase it to 200°C at a rate of 20°C / min, and keep it for 2 minutes; 70eV, ion source temperature 230°C, quadrupole temperature 150°C, solvent delay time 2.5min. The quantitative analysis adopts the selective ion (SIM) mode segmented scanning mode, and performs quantitative a...

Embodiment 3

[0054] Weigh 0.2g (accurate to 0.1mg) sample of popping beads (capsules) into a 20mL stoppered centrifuge tube, add 5mL of first-grade water, add 10μL of internal standard stock solution and 10.0mL of n-pentane, and wait until the popping beads (capsules) are completely Dissolve and shake in a vortex shaker for 10 minutes at a shaking speed of 2500r / min. After standing and stratifying, take 1mL supernatant in the chromatographic bottle, constant flow mode (flow rate 1mL / min), injection port temperature 240°C, injection volume 1μL, split injection (split ratio 10:1); temperature program : The initial temperature is 40°C, keep it for 3 minutes, raise it to 130°C at a heating rate of 10°C / min, keep it for 3 minutes, then raise it to 200°C at a heating rate of 20°C / min, and keep it for 4 minutes; 70eV, ion source temperature 230°C, quadrupole temperature 150°C, solvent delay time 2.5min. The quantitative analysis adopts the selective ion (SIM) mode segmented scanning mode, and pe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of chemical inspection of cigarette materials, in particular to a method for determining benzene, methylbenzene, ethylbenzene, styrene and xylene in filter beads orcapsules. The method comprises the following steps: (1) preparing an internal standard solution; (2) preparing a series of standard working solutions; (3) preparing a to-be-detected sample solution; (4) carrying out qualitative and quantitative analysis by gas chromatography-mass spectrometry: performing full-scanning qualitative analysis on the series of standard working solutions in the step (2)by gas chromatography-mass spectrometry to determine the retention time and qualitative and quantitative ions of the standard substance; establishing a standard working curve regression equation; andfinally, carrying out selective ion SIM monitoring analysis on the sample solution prepared in the step (3), substituting the area ratio of each to-be-detected substance to the internal standard peakinto a standard working curve regression equation, and calculating the content of each to-be-detected substance. The method is simple and efficient in sample pretreatment, high in detection sensitivity, good in repeatability and capable of avoiding loss of volatile samples and accurately quantifying the amount of benzene series in the filter bead liquid for the cigarettes.

Description

technical field [0001] The invention relates to the field of chemical testing of tobacco materials, in particular to a method for measuring benzene, toluene, ethylbenzene, styrene and xylene in quick-fried beads or capsules. Background technique [0002] Cigarette popping beads (capsules) have been widely used in domestic and foreign cigarette products. There are many popping beads (capsules) cigarette products on the market. As an auxiliary flavoring method for cigarettes, popping beads (capsules) are mixed with smoke and directly enter the human body. Respiratory system, its stability and safety should be monitored emphatically. At present, the main components of popping beads (capsules) are volatile and semi-volatile chemical components wrapped in a brittle film. Due to the small particle size, low content of internal chemical substances and high volatility, it is difficult to prepare samples for detection. [0003] Volatile organic compounds such as benzene, toluene, et...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/72
CPCG01N30/02G01N30/06G01N30/72G01N2030/045
Inventor 马斌崔卓谢丽华花蕾丁润波郭磊杜青霞王志才黄伟周强刘彦岭王文婷牛恩利臧志鹏朱存真
Owner GANSU TOBACCO IND