11-07-2023 дата публикации
Номер: CN116413349A
Принадлежит:
The invention discloses a detection method for determining volatile substances in polypropylene, which comprises the following steps: (1) preparation of a solid-phase microextraction fiber coating: i, dissolving a mixture of an MIL-101 (Cr) adsorbent and an adhesive in a solvent to prepare a suspension, shaking the suspension, and carrying out ultrasonic treatment; ii, immersing the carrier in the suspension, then taking out the carrier from the suspension, leaving a coating on the surface of the carrier, and then volatilizing the solvent; iii, repeating the step ii, and forming a solid-phase microextraction fiber coating on the carrier; placing a polypropylene resin sample in a headspace sample injection bottle, sealing and balancing, inserting the solid-phase microextraction fiber coating into the headspace of the headspace sample injection bottle for extraction, taking out the solid-phase microextraction fiber coating, and immediately inserting the solid-phase microextraction fiber coating ...
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