Method for detecting myrcene in soil by combining purging and trapping with GC-MS (Gas Chromatography-Mass Spectrometer)

A technology of purging, trapping, and detection methods, which is applied to measurement devices, instruments, scientific instruments, etc., can solve the problems of inability to accurately detect myrcene, difficult storage, high technical requirements, and no detection of myrcene, and reduce time and operation. Simple, fast, and precision-enhancing effects

Active Publication Date: 2022-04-12
ZHEJIANG UNIV +1
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Problems solved by technology

However, most of the myrcene detection substances reported at present are plants with relatively high myrcene concentration, and the detection objects are often a variety of volatile substances. There is no detection for myrcene alone, and the baking temperature in the detection method is often higher (generally at 180 ℃), which makes the concentration of myrcene in the substance to be detected higher (mostly tens of ppm level) during the detection process. Unable to achieve accurate detection of myrcene in soil alone

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  • Method for detecting myrcene in soil by combining purging and trapping with GC-MS (Gas Chromatography-Mass Spectrometer)
  • Method for detecting myrcene in soil by combining purging and trapping with GC-MS (Gas Chromatography-Mass Spectrometer)
  • Method for detecting myrcene in soil by combining purging and trapping with GC-MS (Gas Chromatography-Mass Spectrometer)

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Embodiment Construction

[0025] The following non-limiting examples can enable those skilled in the art to understand the present invention more fully, but do not limit the present invention in any way.

[0026] The method for detecting myrcene in combination with purge and trap of the present invention and gas chromatography mass spectrometry comprises the steps:

[0027] Step 1. Collect samples, remove foreign matter and take 5.0g into 5mL ultrapure water;

[0028] Step 2. Put the sample obtained in step 1 into the purge and trap injector, and set the purge and trap conditions as follows: sample preheating time 0.5 minutes, sample preheating temperature 40°C, purge time 11 minutes, purge temperature 40°C ℃, the sample heating temperature is 90℃, and the minimum baking time is 2 minutes; start the purge and trap before entering the GC-MS;

[0029] Step 3. Set the chromatographic conditions of the GC-MS instrument as follows: inlet temperature 280°C, split ratio 2:1; chromatographic column 30m×250μm×...

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Abstract

The invention discloses a method for detecting myrcene in soil by combining purging and trapping with GC-MS. The method comprises the following steps: firstly, collecting a soil or sediment sample, removing foreign matters, and adding 5.0 g of the sample into 5mL of ultrapure water; then placing the obtained sample in a purging and trapping sample injector, setting purging and trapping conditions to perform purging and trapping on the sample, purging myrcene in the sample out and entering a gas chromatograph-mass spectrometer, and setting chromatographic conditions of the gas chromatograph-mass spectrometer to analyze myrcene. According to the method, purging and trapping are combined with GC-MS, the detection efficiency is improved, the detection precision is greatly improved, the method is low in detection limit and good in repeatability, and myrcene in soil or sediment can be independently detected with high precision.

Description

technical field [0001] The invention belongs to the technical field of soil organic pollutant detection, and in particular relates to a method for detecting myrcene in soil combined with purge and trap and GC-MS. Background technique [0002] β-myrcene is a monoterpene in a series of plant emissions, accounting for 2-10% of the total monoterpene emissions. It is mainly produced by the pyrolysis of pinene and is a key intermediate in the production of several perfumes and flavors including linalool and menthol. The special chemical structure of conjugated dienes containing long alkenyl groups also makes them good substitutes for diene monomers (butadiene, isoprene) in polymerization research and applications. Due to its long side substituents, myrcene also has great potential for damping absorption in tire and military industries. Based on myrcene is a renewable carbon source, it can also become a raw material for renewable hybrid diesel and green rubber. In the tropospher...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/24
CPCY02A50/20
Inventor 倪秀峰张清宇黄贵凤王继忠
Owner ZHEJIANG UNIV
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