Tenax as a simulant hs-gc/ms method for the determination of migration of volatile and semi-volatile organic compounds in paper and paperboard
A simulant and semi-volatile technology, applied in the field of analytical chemistry, can solve the problems of ineffective specific guidance experiments, no operation steps, etc., and achieve the effect of simple operation, high sensitivity and feasible method
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Embodiment 1
[0033] Tenax is used as a simulant HS-GC / MS to determine the migration of volatile and semi-volatile organic compounds in paper and board, including the following steps:
[0034] Step (1), sample preparation and assembly: cut and prepare 0.6dm 2Box-packed white cardboard sample, as a mock sample, evenly spread 2.5g of Tenax on a small glass petri dish, cover the sample on top, and the contact surface with the cigarette faces Tenax, then cover it with a large glass petri dish, then invert the petri dish, That is to prepare the mock sample; at the same time, make a blank sample. The preparation method of the blank sample is to prepare another set of the same petri dish, evenly spread the same amount of Tenax in the mock sample on the small glass petri dish, and then cover it with a large glass petri dish. Invert the petri dish after living; wherein, the outer diameter of the small glass petri dish used is 88mm, the inner diameter of the large glass petri dish is 89mm, and the la...
Embodiment 2
[0042] Tenax is used as a simulant HS-GC / MS to determine the migration of volatile and semi-volatile organic compounds in paper and board, including the following steps:
[0043] Step (1), sample preparation and assembly: cutting preparation 1.0dm 2 Cardboard sample, as a mock sample, evenly spread 5.0g Tenax on a small glass petri dish, the sample is covered on it, and the contact surface with the cigarette faces Tenax, then cover it with a large glass petri dish, and then reverse the petri dish, and the mock is prepared Samples, make two samples as mock samples, and make a blank sample at the same time. The preparation method of the blank sample is to prepare another set of the same petri dish, evenly spread the same amount of Tenax in the mock sample on a small glass petri dish, and then use a large Invert the Petri dish after the glass Petri dish is covered;
[0044] Step (2), simulation test: place the simulation sample and the blank sample in an oven preheated to 20°C a...
Embodiment 3
[0048] Tenax is used as a simulant HS-GC / MS to determine the migration of volatile and semi-volatile organic compounds in paper and board, including the following steps:
[0049] Step (1), sample preparation and assembly: cut and prepare 0.4dm 2 Pack the coated paper samples in boxes and make mock samples. Spread the sample on the bottom of the weighing bottle, with the food contact surface facing upwards, spread 2.0g Tenax evenly on the top of the sample, cover the weighing bottle cap, and make a blank sample at the same time, the preparation method of the blank sample is to prepare another same Weighing bottle, evenly spread the same amount of Tenax as in the simulated sample, and cover the weighing bottle cap;
[0050] Step (2), simulated test: place the simulated sample and the blank sample in an oven preheated to 100°C at the same time, keep at a constant temperature for 24 hours, and cool to room temperature after completion;
[0051] Step (3), determination: Prepare a...
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