Enrichment device and analysis method for volatile and semi-volatile components in saliva of smoker
A semi-volatile and analytical method technology, applied in the direction of measuring devices, analytical materials, material separation, etc., can solve problems such as difficulty in meeting the analysis requirements of low-content components, poor enrichment effect of semi-volatile components, and cumbersome pretreatment process, etc. Achieve the effect of easy operation, low cost and avoid interference
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Embodiment 1
[0107] like figure 1 As shown, the present invention provides a device for enriching volatile and semi-volatile components in the smoker's saliva, including a sample bottle 100, a water bath 200 and an air pump 300, the sample bottle 100 is located in the water bath 200, and the sample bottle 100 is provided with a first air inlet 101 and a first air outlet 102, the sample bottle 100 is connected with the air pump 300 through the first air inlet 101, and the device also includes a sampling tube 400, the sampling tube 400 One end communicates with the first gas outlet 102 of the sample bottle 100 through the first pipeline 600, the other end of the sampling tube 400 communicates with the air pump 300 through the second pipeline 601, and the first air inlet of the sample bottle 100 The port 101 communicates with the air pump 300 through the third pipeline 603, and the sample bottle 100 and the air pump 300 are connected as a closed-loop circuit through the first pipeline 600, th...
Embodiment 2
[0119] In the present embodiment, the analytical method of volatile and semi-volatile components in the smoker's saliva includes as follows:
[0120] 1) Put 350 mg of cotton ball into the mouth of the smoker to chew for 5 minutes, then put it into the sample bottle of the enrichment device of Example 1, put the sample bottle into a water bath at 70° C. for 15 minutes to balance.
[0121] 2) After equilibration, continue to heat the sample bottle at 70°C, and use an air pump to prepare air to purge the cotton ball. The flow rate at the outlet of the air pump is 800mL / min, and the purge time is 18h.
[0122] 3) Use a sampling tube equipped with 200 mg Tenax to enrich the volatile and semi-volatile components obtained after purging. The condensing device is set on the neck of the sample bottle to condense at a temperature of 4°C; the heating device heats the first pipeline at a heating temperature of 70°C.
[0123] 3) After the enrichment is completed, the sampling tube is remov...
Embodiment 3
[0127] In the present embodiment, the analysis method of the volatile and semi-volatile components in the smoker's saliva is carried out for repeated investigation, including as follows:
[0128] The cotton ball sample to which 2mL mainstream smoke component solution was added dropwise was used as the simulated saliva sample, and 5 simulated saliva samples were prepared respectively, placed in the sample bottle of the enrichment device, and the qualitative and semi-quantitative analysis of the volatile and semi-volatile components were carried out , Assay conditions are the same as in Example 2. The peak area normalization method was used to semi-quantitatively analyze the detection results, and the percentage content of each volatile and semi-volatile component was obtained, and the repeatability of the calculation method was obtained. The results are shown in Table 1.
[0129] Preparation method of mainstream smoke solution:
[0130] A certain brand of cigarettes was equil...
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Abstract
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