Method for simultaneously measuring chlorotoluene compounds in leather by gas chromatography-mass spectrography
A technology of gas chromatography and chlorotoluene, applied in the field of leather, can solve problems such as teratogenicity, not easy to decompose, and affect the central nervous system
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[0051] Specific embodiments of the present invention such as Figure 1-20 Shown is the method for the simultaneous determination of chlorotoluene compounds in leather by gas chromatography-mass spectrometry, which may further comprise the steps:
[0052] Step 1. Preparation of the sample to be tested. Take an appropriate amount of leather samples, cut the samples into pieces, and the sample size range is less than 20mm×20mm, and mix the cut samples evenly;
[0053] Step 2. Sample extraction. Weigh 1.00 g of the sample, place it in a 40 mL reaction bottle, add 30 mL of dichloromethane, and perform ultrasonic extraction for 30 min at room temperature to obtain an ultrasonic extraction solution. Filter the ultrasonic extraction solution into a 100 mL flat-bottomed flask, concentrate with a rotary evaporator at a temperature of 40°C to obtain a 1-2 mL concentrated solution, transfer the concentrated solution to an evaporating tube, wash the flat-bottomed flask with a small amount ...
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