Essence component artificial sniffing device synchronized with instrument analysis and synchronization method

An instrument analysis and sniffing technology, applied in the field of analysis and detection devices, can solve the problems that mass spectrometry and artificial sniffing mouth can not fully obtain all compounds, reduce the response intensity, split flow instability, etc., and achieve low cost of instrument modification, easy verification, Easy-to-use effects

Pending Publication Date: 2022-04-29
海南红塔卷烟有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The most important feature of GC-O-MS technology is to install a split port at the end of the chromatographic column, so that the mass spectrometer and the artificial sniffing port can obtain the compounds to be analyzed from the same chromatographic column, but in the case of limited loading capacity of the chromatographic column, it will cause Mass spectrometry and artificial sniffing can not fully obtain all compounds and reduce the response intensity
At the same time, the split port installed inside the column oven will have temperature changes with the temperature rise program of the column oven, which may cause the instability of the actual split flow, and then cause systematic errors in the evaluation of the mass spectrometry response intensity and artificial smell intensity.

Method used

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  • Essence component artificial sniffing device synchronized with instrument analysis and synchronization method
  • Essence component artificial sniffing device synchronized with instrument analysis and synchronization method

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Experimental program
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Effect test

Embodiment 1

[0049] An artificial smelling device for fragrance components synchronized with instrumental analysis, comprising: a separation unit, a detection unit, and an artificial smelling unit;

[0050] Described separation unit is that gas chromatograph 4 is used for separating essence composition, is equipped with two chromatographic columns, chromatographic column A7 and chromatographic column B8, and column box 5 tops are equipped with column box outlet 14 and are connected transfer pipe 15, and described transfer pipe 15 is communicated with a sniffing hood 22 at one end outside the column box 5; the front end of the chromatographic column A7 is connected to the inlet A10, and the end is connected to the ionization chamber 2 of the mass spectrometer 1 via the mass transmission rod 6; the front end of the chromatographic column B8 is connected to Inlet B13, the end of which extends from the outlet 14 of the column box to the outside of the column box 5 and reaches the sniffing hood ...

Embodiment 2

[0057] A method for synchronizing an artificial smelling device for essence components synchronously with instrumental analysis, comprising the following steps:

[0058] Step 1. According to the characteristics of flavors and fragrances and the purpose of the research, select a suitable stationary phase and type of chromatographic column, and connect two identical chromatographic columns to a gas chromatograph and a sniffing device;

[0059] Step 2, close the column oven door 3, turn on the gas chromatograph 4 and the mass spectrometer 1, wait for the instrument to reach the detection state, set the instrument detection parameters according to the characteristics of flavors and fragrances, research purposes and chromatographic column performance;

[0060] Step 3, turn on the controller 16, set the temperature program of the transfer tube 15 to be the same as that of the column oven 5, and start the fan 18;

[0061] Step 4, select 2 to 4 representative fragrance monomer compoun...

Embodiment 3

[0077] Application of an artificial sniffing device to the identification of odorant active compounds in a commercially available perfume sample

[0078] Step 1. Select 2 DB-5MS chromatographic columns (60m×0.25mm i.d.×0.25μm d.f.), and connect 2 identical chromatographic columns to the instrument and sniffing device;

[0079] Step 2, close the column oven door 3, turn on the gas chromatograph 4 and the mass spectrometer 1, and set the detection parameters: the temperature of the front and rear injection ports is 250°C, the split ratio is 10:1, and the injection volume is 1 μL; carrier gas helium, constant flow mode , 1mL / min; the oven temperature is 50°C for 2min, and the temperature is raised to 280°C at 8°C / min for 5min; the transfer line temperature is 280°C, the ion source temperature is 230°C, the ionization voltage is 70eV, the solvent delay is 4.8min, and the scanning range is 33~400amu ;

[0080] Step 3, turn on the controller 16, set the temperature program of the t...

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Abstract

The invention discloses an artificial essence component smelling device synchronized with instrument analysis and a synchronization method, and belongs to the technical field of analysis and detection. According to the device disclosed by the invention, two sample inlets of a gas chromatograph are respectively connected with two same chromatographic columns, the tail end of one chromatographic column is connected with a mass spectrometer for mass spectrometry of essence components, the tail end of the other chromatographic column extends out of a column box and is connected with a sniffing cover, the part outside the column box is synchronously heated by a transmission pipe, and simultaneous sample introduction is realized by utilizing a synchronous push rod; and synchronous separation of essence components on the two chromatographic columns is ensured. A synchronization method is used for debugging and verifying the synchronism of a mass spectrum detection signal and artificial olfactory information, so that the same compound separated on a chromatographic column can simultaneously reach a mass spectrum and a human nose, and researchers are helped to quickly and reliably determine the compound and evaluate the olfactory information; odor active compounds of flavors and fragrances can be accurately identified, and a more stable, reliable and convenient technical means is provided for fragrance identification, simulation and creation research.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection devices, and in particular relates to an artificial smelling device and a synchronization method for essence components synchronized with instrument analysis. Background technique [0002] The olfactory instrument is an instrument that sniffs odorous substances online and describes and records the results. It is generally used in conjunction with gas chromatography. The principle is to install a split port at the end of the gas chromatography column, and the components separated by the capillary column are separated by a certain split A part of the ratio enters the detector for detection and analysis, and the other part enters the smelling end for online sniffing, and combines some analytical methods to describe the active components of the odor and record their odor intensity. It is a technical means to detect effective flavor compounds. [0003] Gas chromatography-olfac-tometry-ma...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/72G01N30/16G01N33/00
CPCG01N30/02G01N30/72G01N30/16G01N33/0001Y02A50/30
Inventor 朱文辉文杰罗鑫李方友耿召良蔡斌庄光健银沅沈钟王娜娜林小妹唐着宽琚磊王春利刘欣杰朱鹏俊
Owner 海南红塔卷烟有限责任公司
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