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Tobacco extract hydrogen sulfide content measurement method and application thereof

A technology of hydrogen sulfide and extract, which is applied in the field of analytical chemistry, can solve the problems of increasing the back pressure of the chromatographic column, and achieve the effects of good repeatability, fast and simple method, and wide linear range

Inactive Publication Date: 2017-12-12
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because there are a large amount of organic compounds in the spices used in tobacco extracts, and direct sampling analysis of organic compounds will deposit on the ion chromatographic column, increasing the back pressure of the chromatographic column

Method used

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  • Tobacco extract hydrogen sulfide content measurement method and application thereof
  • Tobacco extract hydrogen sulfide content measurement method and application thereof
  • Tobacco extract hydrogen sulfide content measurement method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The determination sample is jujube extract, accurately weigh 0.5g sample (accurate to 0.1mg) in a 100mL conical flask, accurately add 20mL of 1% sodium hydroxide solution, and use a high-speed homogenizer 10000r / min to extract 2.5 min, take 2.0mL of the extract and pass it through the solid-phase extraction column at a flow rate of 5mL / min, discard the first 0.5mL of the effluent, collect the subsequent 1.0mL of the effluent, and filter the membrane with a 0.45μm aqueous needle Filtered for ion chromatography analysis.

[0050] The mobile phase for ion chromatography analysis is: 1.5mol / L sodium hydroxide-1.0mol / L sodium acetate-2% (volume fraction) ethylenediamine (40:50:10, volume ratio); column temperature: 30°C; flow rate: 1.0mL / min; injection volume: 20μL; detection potential waveform of detector (working electrode: Ag, reference electrode: Ag / AgCl): 0min(-100mV), 0.2min(-100mV), 0.9min(- 100mV), 0.91min(-1000mV), 0.93min(-300mV), 1.0min(-300mV).

[0051] Accordi...

Embodiment 2

[0053] The determination sample is fig extract, accurately weigh 0.5g sample (accurate to 0.1mg) in a 100mL conical flask, accurately add 20mL of 1% sodium hydroxide solution, and use a high-speed homogenizer 10000r / min to extract 2.5 min, take 2.0mL of the extract and pass it through the solid-phase extraction column at a flow rate of 5mL / min, discard the first 0.5mL of the effluent, collect the subsequent 1.0mL of the effluent, and filter the membrane with a 0.45μm aqueous needle Filtered for ion chromatography analysis.

[0054] The mobile phase for ion chromatography analysis is: 1.5mol / L sodium hydroxide-1.0mol / L sodium acetate-2% (volume fraction) ethylenediamine (40:50:10, volume ratio); column temperature: 30°C; flow rate: 1.0mL / min; injection volume: 20μL; detection potential waveform of detector (working electrode: Ag, reference electrode: Ag / AgCl): 0min(-100mV), 0.2min(-100mV), 0.9min(- 100mV), 0.91min(-1000mV), 0.93min(-300mV), 1.0min(-300mV).

[0055] Through th...

Embodiment 3

[0057] The determination sample is tobacco extract, accurately weigh 0.5g sample (accurate to 0.1mg) in a 100mL conical flask, accurately add 20mL of 1% sodium hydroxide solution, and use a high-speed homogenizer 10000r / min to extract 2.5 min, take 2.0mL of the extract and pass it through the solid-phase extraction column at a flow rate of 5mL / min, discard the first 0.5mL of the effluent, collect the subsequent 1.0mL of the effluent, and filter the membrane with a 0.45μm aqueous needle Filtered for ion chromatography analysis.

[0058] The mobile phase for ion chromatography analysis is: 1.5mol / L sodium hydroxide-1.0mol / L sodium acetate-2% (volume fraction) ethylenediamine (40:50:10, volume ratio); column temperature: 30°C; flow rate: 1.0mL / min; injection volume: 20μL; detection potential waveform of detector (working electrode: Ag, reference electrode: Ag / AgCl): 0min(-100mV), 0.2min(-100mV), 0.9min(- 100mV), 0.91min(-1000mV), 0.93min(-300mV), 1.0min(-300mV).

[0059] Accord...

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Abstract

The invention discloses a tobacco extract hydrogen sulfide content measurement method and application thereof. According to the tobacco extract hydrogen sulfide content measurement method, a tobacco extract sample is extracted with 1% sodium hydroxide through high-speed homogenization, extract liquor is processed through solid-phase extraction and purification by graphitized carbon black, and then ion chromatography is applied to measuring the content of hydrogen sulfide. Under the premise of maintaining a high hydrogen sulfide recovery rate, the tobacco extract hydrogen sulfide content measurement method can effectively eliminate organic compounds from samples and avoid side effects on chromatographic columns due to deposition of the organic compounds on the ion chromatographic columns. The tobacco extract hydrogen sulfide content measurement method is rapid, simple, high in sensitivity, good in selectivity and high in precision. The tobacco extract hydrogen sulfide content measurement method can help timely determine the spoilage status of the tobacco extract and issue corresponding risk warning, thereby reducing the risk of product spoilage and being of practical significance to ensuring quality safety of tobacco essence and liquid.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry, and in particular relates to a method for accurately measuring the hydrogen sulfide content in tobacco extract spices through solid-phase extraction purification and ion chromatography technology. At the same time, the invention also relates to the further application of the method in cigarette production. Background technique [0002] The production of flavors and fragrances for tobacco is one of the core technologies of the cigarette industry. Reasonable flavoring and material addition play an irreplaceable role in reducing the irritation of cigarette products, improving the aftertaste, and highlighting the aroma style of cigarette products. With the rapid development of tobacco technology, various natural flavor materials, such as spice plant extracts, tobacco aroma extracts, animal extracts and other natural flavors are widely used in the cigarette industry. Compared with synth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/96G01N30/00
CPCG01N30/96G01N30/00G01N2030/009
Inventor 李雪梅向海英曾婉丽刘欣李晶米其利杨叶昆孔维松陈建华张承明杨光宇
Owner CHINA TOBACCO YUNNAN IND
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