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

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...

Examples

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.

[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...

Examples

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.

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