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Quantification of polyethylene terephthalate microplastics and nanoplastics in sands, indoor dust and sludge using a simplified in-matrix depolymerization method

Marine Pollution Bulletin 2022 41 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

H.A. Leslie H.A. Leslie H.A. Leslie Lei Tian, Lei Tian, H.A. Leslie Lei Tian, H.A. Leslie H.A. Leslie H.A. Leslie Gert‐Jan M. Gruter, H.A. Leslie Robert‐Jan van Putten, E.M. Skoczynska, Robert‐Jan van Putten, H.A. Leslie H.A. Leslie E.M. Skoczynska, H.A. Leslie H.A. Leslie Deepti A. Siddhanti, H.A. Leslie H.A. Leslie H.A. Leslie Gert‐Jan M. Gruter, Gert‐Jan M. Gruter, Gert‐Jan M. Gruter, Gert‐Jan M. Gruter, Robert‐Jan van Putten, Deepti A. Siddhanti, H.A. Leslie H.A. Leslie H.A. Leslie Robert‐Jan van Putten, Gert‐Jan M. Gruter, Gert‐Jan M. Gruter, Gert‐Jan M. Gruter, H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie Gert‐Jan M. Gruter, H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie H.A. Leslie

Summary

A simplified in-matrix depolymerization method coupled with liquid chromatography and UV detection was developed to quantify polyethylene terephthalate microplastics and nanoplastics in sand, indoor dust, and sludge. The three-step method provides a practical approach for mass-based PET plastic quantification across diverse environmental matrices.

Polymers

PE PET

Study Type Environmental

An effective 3-step method for the quantification of mass of polyethylene terephthalate microplastics and nanoplastics (PET MNPs) in complex environmental matrices was developed based on a simplified in-matrix depolymerization. Liquid chromatography (LC) coupled with ultraviolet (UV) detection was used for detection and quantification. Recoveries for PET-spiked sand samples were 99 ± 2% (1 mg/L) and 93 ± 7% (30 mg/L). The limit of quantification (LOQ) for PET was 0.4 μg/g for sand, 1 mg/g for indoor dust and 0.2 μg/g for wet sludge. This method was applied to seven beach sand samples, 20 indoor dust samples and one sewage sludge sample. PET MNPs levels in sand samples were all below the limit of detection (LOD) of LC-UV (0.1 μg/g). The concentrations of PET MNPs in indoor dust samples ranged from 1.2 to 305 mg/g and the PET MNPs in liquid sludge was 1.5 mg/L.

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