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Detection method for odor substances in exhaust gas of perfume and essence industry

A detection method and essence technology, applied in the direction of measuring devices, material separation, analysis of materials, etc., can solve problems such as the establishment of methods without a system, and achieve the effects of good air tightness, high efficiency, and simple operation

Inactive Publication Date: 2016-05-25
HUIZHOU RES INST OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no systematic method for the detection of odor substances in the waste gas of the fragrance and flavor industry.

Method used

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  • Detection method for odor substances in exhaust gas of perfume and essence industry
  • Detection method for odor substances in exhaust gas of perfume and essence industry
  • Detection method for odor substances in exhaust gas of perfume and essence industry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the detection of odor substance in the exhaust gas of the first flavor and fragrance company, first do blank test to air bag, then select volume 2L, PVF material sampling bag collects gas sample, select the SPME probe extraction sampling of CAR-PDMS-DVB coating The sample in the bag was kept for 1 hour, and desorbed in the GC inlet for 2 minutes. Gas chromatography-mass spectrometry analysis conditions are: chromatographic column: Rtx-5, injection 1uL, inlet temperature 260°C, ion source temperature 230°C, split ratio 10:1, flow rate 1mL / min. Temperature program: the initial temperature is 40°C, keep for 2min, increase the temperature to 200°C at a rate of 5°C / min, and keep for 5min. The scanning range of the mass spectrum is 40-400m / z. The detection process of odor substances in exhaust gas is as follows: figure 1 , detect the GC / MS total ion chromatogram as shown in figure 2 As shown, the odor compounds in the exhaust gas are shown in Table 1.

Embodiment 2

[0031] Embodiment 2: Odor substance detection in the exhaust gas of the second fragrance and essence company, first blank test is done to air bag, then select volume 2L, the sampling bag of PVDF material collects gas sample, selects the sample 1h in the SPME probe extraction sampling bag of PDMS coating , and desorbed at the GC inlet for 2min, the gas chromatography-mass spectrometry analysis conditions were: chromatographic column: Rtx-5, sample injection 1uL, inlet temperature 260°C, ion source temperature 230°C, split ratio 10:1, Flow rate 1 L / min. Programmable temperature rise: initial temperature is 40°C, keep for 2min, increase the temperature to 200°C at a rate of 5°C / min, keep for 5min, mass spectrometry scanning range is 40-400m / z. The total ion chromatogram of exhaust gas compounds is as follows: image 3 shown.

Embodiment 3

[0032] Example 3: Detection of odorous substances in the exhaust gas of Bing Petrochemical Company. Firstly, a blank test is performed on the air bag, and then a sampling bag with a volume of 2L is selected to collect the gas sample, and the SPME probe coated with PDMS-DVB is selected to extract the sampling bag. The sample was desorbed for 1 hour at the GC inlet for 2 minutes. The gas chromatography-mass spectrometry conditions were: chromatographic column: Rtx-5, 1uL injection, inlet temperature 260°C, ion source temperature 230°C, split ratio 50: 1. The flow rate is lml / min. Programmed temperature rise: the initial temperature is 60°C, keep for 2min, raise the temperature to 210°C at a rate of 6°C / min, keep for 5min, and the scanning range of the mass spectrum is 40-400m / z. Total ion chromatogram of exhaust gas compounds, such as Figure 4 shown.

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Abstract

The invention discloses a detection method for odor substances in exhaust gas of the perfume and essence industry. According to the invention, exhaust gas discharged by the perfume and essence industry is directly or indirectly acquired, then solid-phase micro-extraction (SPME) or solid-phase adsorption-thermal desorption technology are employed for extraction of a sample; and extraction temperature and extraction time are adjusted and GC-MC is cooperatively used for analysis of the exhaust gas sample. The detection method is high in efficiency, simple to operate and applicable to analysis of odor substances with any concentration. An airbag method and negative pressure sampling technology are cooperatively used, an appropriate sampling point is selected and a representative gas sample is acquired, so original information of the sample is maintained to a greatest extent. A sampling bag has good airtightness, and a sample in the bag can be maintained for more than one month. SPME pretreatment technology is employed, so the advantages of greenness, rapidness, no pollution and repeated usability can be obtained. The detection method is applicable to both exhaust gas discharged in the perfume and essence industry and to detection of exhaust gas of industries like petroleum, the chemical industry, food, medicine and cosmetics.

Description

technical field [0001] The invention relates to an odor detection technology, in particular to a method for detecting odor substances in waste gas from the fragrance and essence industry. Background technique [0002] The exhaust gas emitted by the fragrance and fragrance industry often contains odorous or foul-smelling pollutants. These organic volatile pollutants often stimulate people's olfactory organs, causing people to feel unhappy, and then affecting the quality of life and health. Except for ammonia and hydrogen sulfide, the vast majority of odorous gases are organic volatile substances. These compounds have low boiling points and are easy to diffuse into the atmosphere. Since most organic waste gases have low odor thresholds, it is important to prevent them from pollution. The requirements for measures are relatively high. Studies have shown that the removal rate of malodorous substances reaches 90%, but the concentration of odor perceived by people's sense of smell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N1/34
Inventor 纪红兵马飞李炜基
Owner HUIZHOU RES INST OF SUN YAT SEN UNIV
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