There is growing interest in quantifying microplastics in environmental
samples. This application note presents a thermal extraction desorption-gas
chromatography/mass spectrometry (TED-GC/MS) method that is well suited to
automation and increased sample throughput. The method is also able to detect
all particle sizes in the sample as long as the limit of detection (LOD) is reached
and allows analysis of larger samples of 15 to 25 mg or more. Samples were
decomposed by thermogravimetric analysis (TGA), and the gaseous decomposition
products were trapped on a solid-phase sorbent, followed by thermal desorption‑gas
chromatography/mass spectrometry (TD-GC/MS) using an Agilent 5977B GC/MSD
coupled to an Agilent 7890B GC. Target microplastic particle (MP) polymers were
identified in environmental samples including surface water, finished compost,
house dust, and drinking water. Quantification of MP polymers in environmental
samples provided LODs of 0.06 to 2.2 µg, allowing the detection of MPs in trace
amounts with sample weights of up to 1 g. Method repeatability was adequate for
reliable quantification with RSDs of approximately 6 to 12%.
Za odpiranje dokumenta
kliknite tukaj …
01 4277 560
Ne zamudite naših prihodnjih dogodkov in obvestil
Digitalna preobrazba podjetja Chemass
Discuss with Agilent