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- Title
Study on the Determination Method and the Migration Rules of Three New Plasticizers in Degradable Food Contact Material.
- Authors
SUN Ren-yue; JIN Li-li; ZOU Kai; LIU Gui-hua; LUO Shi-peng
- Abstract
A method for determination of the migration of three new plasticizers, triisooctyl phosphate (TOP), diisooctyl sebacate (NINS) and diisooctyl 1,2-cyclohexane dicarboxylate (DEHT), in six food simulants was established. A liquid chromatography-tandem quadrupole time-of-flight high resolution mass spectrometer (HPLC-QTOF) was used to separate the target substances by gradient elution on a T3 column (100 mmx2.1 mm, 2.7 µm) with methanol and 5 mmol/L ammonium formate as the flow, and the detection was carried out under information dependent acquisition mode (IDA). Besides, the migration of positive biodegradable food contact material samples at different contact times, temperatures and food simulants was studied. The results showed that the three new plasticizers had good linearity (R²>0.99) in the concentration range of 0.005~0.250 mg/L, the detection limit was between 0.1~0.9 µg/L, and the recovery rate was between 79.3%~108.0%, while the RSD was between 0.84%~9.80%. The migration regularity showed that under the same conditions, in 50% ethanol simulant results the highest migration rate of TOP, and in 95% ethanol simulant results the highest migration rate of NINS. The amount of migration increases with the increase of temperature and migration time, while the migration increases rapidly first and then tends to equilibrium after 4 days. This research could provide technical support for the quality control of biodegradable food contact materials for enterprises and regulatory agencies.
- Subjects
GRADIENT elution (Chromatography); MASS spectrometers; DETECTION limit; GOVERNMENT agencies; QUALITY control
- Publication
Plastics Science & Technology / Suliao Ke-Ji, 2024, Vol 52, Issue 8, p132
- ISSN
1005-3360
- Publication type
Article
- DOI
10.15925/j.cnki.issn1005-3360.2024.08.026