Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Determination method for experiment of simulating cigarette burning for generating hydrogen cyanide

A method for measuring hydrogen cyanide, which is applied in the field of tobacco industry, can solve problems such as slow heating rate, small sample loading capacity of instruments and devices, and single carrier gas atmosphere, and achieve fast heating rate, large sample loading capacity, and experimental repeatability Good results

Inactive Publication Date: 2014-03-05
ZHENGZHOU TOBACCO RES INST OF CNTC
View PDF2 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the cracking instrument-GC-MS combined instrument or cigarette addition experiment is commonly used to study the formation of HCN from tobacco pyrolysis. In the past, commercial instruments and equipment were often used to study the formation of HCN in smoke, or the instrument device had a small sample capacity, a single carrier gas atmosphere, and a low flow rate. Small, or the heating rate is slow, which cannot accurately simulate the smoking process of cigarettes
For example, the article "The Correlation Between Free Amino Acids in Tobacco Leaf and Hydrogen Cyanide in Mainstream Cigarette Smoke" uses the experiment of adding amino acids to cigarettes to study the hydrogen cyanide produced by different amino acids through cigarette smoking, and investigates the contribution of different amino acids to HCN in smoke, so that Determine whether it is the precursor of HCN in the smoke; the experimental workload of adding this kind of cigarette is large, and a large number of cigarette samples are prepared, which brings great difficulties to the research work

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
  • Determination method for experiment of simulating cigarette burning for generating hydrogen cyanide

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Weigh 0.1g flue-cured tobacco shreds and put them into the middle of the quartz tube, fill the two ends of the sample with 0.1g glass fiber, then put the quartz tube into the infrared furnace, insert the thermocouple into the sample in the sample tube, set the temperature rise program to 50°C / s, a mixed gas (20% oxygen) with a flow rate of 17.5mL / s is introduced, the power is turned on, and the temperature rises from room temperature to 900°C. .1mol / L sodium hydroxide solution is absorbed, and the Cambridge filter that captures the particulate matter is then shaken and extracted with 20mL0.1mol / L sodium hydroxide solution for 30min. The amount of HCN produced was determined by the method, and the amount of HCN generated by simulated burning and smoking of 0.1g flue-cured tobacco shreds was measured to be 308μg.

[0017]

example 2

[0019] In order to study the HCN precursor components in cut tobacco, experiments are often carried out by simulating the chemical components of cut tobacco (such as protein, cellulose, amino acid, etc.). Weigh 100mg of protein into the middle of the quartz tube, fill the two ends of the sample with 0.1g glass fiber, then put the quartz tube into the infrared furnace, insert the thermocouple into the sample in the sample tube, set the temperature rise program to 100°C / s , the mixed gas (9% oxygen) with a flow rate of 17.5mL / s was introduced, the power was turned on, and the room temperature rose to 900°C. Absorbed in / L sodium hydroxide solution, the Cambridge filter disc that traps the particulate matter is then shaken and extracted with 20mL0.1mol / L sodium hydroxide solution for 30min, and then 5mL of the solution is taken each, and measured by the continuous flow method in YC / T 253-2008 The amount of HCN produced, as a result, the amount of HCN produced by simulated burning...

example 3

[0022] Weigh 0.5g of glycine into the middle of the quartz tube, fill the two ends of the sample with 0.1g of glass fiber, then put the quartz tube into the infrared furnace, insert the thermocouple into the sample in the sample tube, set the temperature rise program to 100°C / s, feed in nitrogen gas with a flow rate of 17.5mL / s, turn on the power, rise from room temperature to 900°C, use a Cambridge filter at the gas outlet to capture the particulate matter in the flue gas, and pass through the gas phase with 20mL of 0.1mol / L sodium hydroxide The solution is absorbed, and the Cambridge filter that captures the particulate matter is then shaken and extracted with 20mL0.1mol / L sodium hydroxide solution for 30min. The amount of HCN produced by simulated smoking of 0.5g of flue-cured tobacco shreds was 17.25mg, indicating that HCN was produced after simulated smoking of glycine, which was the precursor component of HCN in smoke.

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 discloses a determination method for an experiment of simulating cigarette burning for generating hydrogen cyanide. The determination method is characterized by comprising the steps of trapping hydrogen cyanide in pyrolysis products by using a Cambridge filter and absorption liquid by adopting a rapid heating control device and taking a nitrogen-oxygen mixed gas or nitrogen as a carrier gas, and then determining the HCN (hydrogen cyanide) content in the Cambridge filter and the absorption liquid by using an ion chromatography so as to realize the simulation of the cigarette burning for generating the HCN and quantitative analysis. Compared with previous methods of simulating the cigarette burning for generating the HCN, the determination method has the advantages of being large in sample loading capacity, capable of using the oxygen-nitrogen mixed gas with different ratios, high in heating rate, good in experimental repeatability and the like, without preparing experimental cigarettes, and can be applicable to the research on the rapid determination of HCN precursors in smoke.

Description

[0001] Technical field [0002] The present invention involves the field of tobacco industry technology. Specifically, it involves an experimental measurement method of simulated cigarette burning.This method uses a fast heating control device, a nitrogen oxygen mixed gas or nitrogen as the load, the hydrogen cyanide in the cracked and cracking of the Cambridge filter and absorption liquid, and then use the continuous flow method to determine the HCN in the Cambridge filter and absorbing solution in HCN in the Cambridge filter and absorption solutionThe content of simulation cigarette burning can produce HCN and its quantitative analysis. [0003] Background technique [0004] In view of the harm of harmful ingredients in smoke gas to the human body, reducing harmful ingredients in flue gas is a hot spot in the field of research in the tobacco industry.Hydrogen cyanide is one of the seven representative harmful components of the mainstream smoke gas. To reduce the amount of HCN r...

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
IPC IPC(8): G01N30/02
Inventor 王洪波夏巧玲郭吉兆郭军伟曹得坡刘克建赵阁谢复炜刘惠民
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com