Determination of PBAT Content in Biodegradable Plastic Products by Pyrolysis Gas Chromatography-Mass Spectrometry
Qualitative and quantitative analysis of polyadipic acid/butylene terephthalate(PBAT),was carried out using pyrolysis gas chromatography-mass spectrometry(Py-GC-MS).Dichloromethane was selected as the solvent for biodegradable plastic products.The characteristic product of PBAT pyrolysis,namely 1,6-dioxane dodecane-7,12-dione,was de-termined through a comprehensive method involving the thermal decomposition temperature of the biodegradable material PBAT,gas quality test parameters,standard material screen-ing,determination of characteristic fragments,and screening of interference factors in multi-component detection.Using the external standard method,it has a good linear relationship in the concentration range of 10 to 500 mg·L-1.The recoveries of 10,50 and 250 mg·L-1 were between 90.7%and 97.9%.The relative standard deviation is within a 10%margin,and the robustness satisfactorily meets the specified requirements.The approach offers the benefits of straightforward operation,precise results,heightened sensitivity,and robust sta-bility.
pyrolysis gas chromatography-mass spectrometrybiodegradable plastics and productspoly(adipic acid/butyl terephthalate)
NETL
NSTL
万方数据
