Method for determining eight carbonyl compounds in heating non-combustible cigarette main flue gas
A technology of cigarette mainstream smoke and carbonyl compounds, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of high detection limit and low sensitivity, and achieve the effects of avoiding false positives, high sensitivity and reducing loss
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Embodiment 1
[0028] The determination method of 8 kinds of carbonyl compounds in the mainstream smoke of the heat-not-burn cigarette in the present embodiment, such as figure 1 shown, including the following steps:
[0029] 1. Capture of samples
[0030] 1.1 Preparation of 2,4-dinitrophenylhydrazine derivatization reagent
[0031] Purification of 2,4-dinitrophenylhydrazine:
[0032] Weigh 35g of 2,4-dinitrophenylhydrazine (DNPH) solid in a 2L flask, add 750mL of absolute ethanol, slowly heat and shake, then slowly add 1000mL of ethyl acetate, continue to add ethyl acetate until DNPH Completely dissolved, the solution should be a clear dark red solution; vacuum filter the solution into a 2L flask, seal it and let it stand overnight to crystallize, vacuum filter the recrystallized DNPH, weigh it and store it in a sealed dry place, concentrate and pump Filtrate to get more recrystallized DNPH;
[0033] Preparation of 2,4-Dinitrophenylhydrazine Derivatization Reagent
[0034] Weigh 1.5 g ...
Embodiment 2
[0071] The main carbonyl compounds in the mainstream smoke of the heat-not-burn cigarette sample in Example 1 were measured by using deep smoking mode (HCI), and the measurement method was the same as in Example 1, wherein the volume fraction of pyridine in the acetonitrile solution of pyridine was 10%. , the results are shown in Table 6.
[0072] Table 6 Smoking detection results of main carbonyl compounds HCI in mainstream smoke of heat-not-burn cigarettes
[0073] compound
experiment example
[0075] Sample in embodiment 1 is carried out high, middle and low different concentration level standard solution spiked recovery rate test, each sample is measured 5 times respectively, calculates the recovery rate of various main carbonyl compounds of this method and measured value after adding the standard The relative standard deviation of the results are shown in Table 7. It can be seen from Table 7 that the average recovery rate of the main carbonyl compounds in cigarette mainstream smoke detected by this method is between 83.5% and 90.5% at the three spiked levels. The average relative deviation of the sample test results is less than 6.7%, indicating that the recovery rate of the method is high and the repeatability is good.
[0076] Recovery and repeatability (n=5) of carbonyl compounds in table 7 cigarette mainstream smoke
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