Mass concentration and distribution characteristics of microplastics in landfill mineralized refuse using efficient quantitative detection based on Py-GC/MS

Lou, Fangfang; Wang, Jun; Sima, Jingyuan; Lei, Jiahui; Huang, Qunxing

doi:10.1016/j.jhazmat.2023.132098

Cited by 10 publications

(3 citation statements)

References 45 publications

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“…MNPs are supplied from various sources, including environmental processes (physical abrasion and bio/chemical degradation) and human activities (manufacturing and using polymer-based items) . MNPs with a wide range of sizes, various components, and diverse forms are widely distributed in rivers, oceans, continents, and the atmosphere. ,, Environmental MNPs are potentially concentrated in marine environments, landfills, and artificial reservoirs , due to precipitation by the adsorption of (in)organic molecules and biomolecules on their surfaces. , Numerous researchers have collected samples from various locations and measured their composition, size, and concentration. For instance, Weiss et al estimated the mass concentration of global MP waste smaller than 5 mm on river surface water in the range of 100–1000 ng/L using the examined data from 89 rivers.…”

Section: Current Status Of Mnp Contaminationmentioning

confidence: 99%

Challenges and Recent Analytical Advances in Micro/Nanoplastic Detection

Choi,

Lee,

Kim

et al. 2024

Anal. Chem.

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Despite growing ecological concerns, studies on microplastics and nanoplastics are still in their initial stages owing to technical hurdles in analytical techniques, especially for nanoplastics. We provide an overview of the general attributes of micro/nanoplastics in natural environments and analytical techniques commonly used for their analysis. After demonstrating the analytical challenges associated with the identification of nanoplastics due to their distinctive characteristics, we discuss recent technological advancements for detecting nanoplastics.

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Section: Current Status Of Mnp Contaminationmentioning

confidence: 99%

Challenges and Recent Analytical Advances in Micro/Nanoplastic Detection

Choi,

Lee,

Kim

et al. 2024

Anal. Chem.

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“…Moreover, in comparison to spectroscopic methods, thermo-analytical methods are faster, cover a wider MNP range, and do not necessitate rigorous purification . Due to these advantages, thermo-analytical methods (i.e., pyrolysis (Py) or thermo-extraction and desorption (TED) combined with GC-MS) have become gold standards for qualitative and quantitative determinations of MNPs in environmental samples. , Indeed, thermo-analytical methods have been employed for analysis of MNPs in water, sediments, soil, and particulate matter, , with little to no sample pretreatment. However, direct instrumental analysis of complex matrices may lead to contamination of instruments and unpredictable interference stemming from decomposed compounds, leading to reduced sensitivity and uncertainty in the results.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Determination of Poly(methyl Methacrylate) Micro/Nanoplastics by Cooling-Assisted Solid-Phase Microextraction Coupled to Gas Chromatography–Mass Spectrometry: Theoretical and Experimental Insights

Xu,

Li,

Xiao

et al. 2024

Anal. Chem.

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Determinations of micro/nanoplastics (MNPs) in environmental samples are essential to assess the extent of their presence in the environment and their potential impact on ecosystems and human health. With the aim to provide a sensitive method with simplified pretreatment steps, cooling-assisted solid-phase microextraction (CA-SPME) coupled to gas chromatography−mass spectrometry (GC-MS) is proposed as a new approach to quantify mass concentrations of MNPs in water and soil samples. The herein proposed CA-SPME method offers the unique advantage of integrating the thermal decomposition of MNPs and enrichment of signature compounds into one step. Poly(methyl methacrylate) (PMMA) was used as a model substance to verify the method performance in this work. Theoretical insights demonstrated that pyrolysis is the rate-determining step during the extraction process and that PMMA is effectively decomposed at 350 °C with an estimated incubation time of 13 min. Eight compounds were identified in the pyrolysis products by CA-SPME-GC-MS with the use of a DVB/ CAR/PDMS coating, wherein methyl methacrylate was considered as the best indicator and dimethyl 2-methylenesuccinate was selected as the confirmation compound. Under the optimized conditions, the proposed method exhibited wide linearity (0.5−2000 μg for water and 5−1000 μg for soil) and high sensitivity, with limits of detection of 0.014 and 0.28 μg for water and soil, respectively. Finally, the proposed method was successfully applied for determinations of PMMA MNPs in real water and soil samples with satisfactory recoveries attained. The method only required the employment of a filter membrane for water analysis, while soil samples were analyzed directly without any pretreatment. The solvent-free approach, straightforward operation, and high sensitivity of the proposed method show great potential for the analysis of MNPs in different environmental samples.

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“…The issues related to plastic’s impact on several ecosystems, such as in marine and soil environments, have been largely investigated, since 90% of plastic products are not recycled [ 7 , 8 ]. Regardless of plastic’s resistance to degradation, different environmental mechanisms can lead to plastic deterioration, such as photodegradation as a consequence of solar irradiation, thermal degradation due to high temperatures, mechanical degradation as a result of the action of external forces, and biotic degradation caused by organisms [ 9 , 10 , 11 ], while in aqueous media abrasion, photolysis and biotic lead to plastic fragmentation [ 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Identification of Plastics in Mixtures and Blends through Pyrolysis-Gas Chromatography/Mass Spectrometry

Gnoffo,

Frache

2023

Polymers

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In this paper, the possibility of detecting polymers in plastic mixtures and extruded blends has been investigated. Pyrolysis–gas chromatography/mass spectrometry (py-GC/MS) allows researchers to identify multicomponent mixtures and low amounts of polymers without high spatial resolution, background noise and constituents mix interfering, as with molecular spectrometry techniques normally used for this purpose, such as Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy and differential scanning calorimetry (DSC). In total, 15 solid mixtures of low-density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), polyamide (PA) and polycarbonate (PC) in various combinations have been qualitatively analyzed after choosing their characteristic pyrolysis products and each polymer has been detected in every mix; thus, in extruded blends of high-density polyethylene (HDPE), PP and PS had varying weight percentages of the individual constituents ranging from 10 up to 90. Moreover, quantitative analysis of these polymers has been achieved in every blend with a trend that can be considered linear with coefficients of determination higher than 0.9, even though the limits of quantification are lower with respect to the ones reported in the literature, probably due to the extrusion process.

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Mass concentration and distribution characteristics of microplastics in landfill mineralized refuse using efficient quantitative detection based on Py-GC/MS

Cited by 10 publications

References 45 publications

Challenges and Recent Analytical Advances in Micro/Nanoplastic Detection

Challenges and Recent Analytical Advances in Micro/Nanoplastic Detection

Quantitative Determination of Poly(methyl Methacrylate) Micro/Nanoplastics by Cooling-Assisted Solid-Phase Microextraction Coupled to Gas Chromatography–Mass Spectrometry: Theoretical and Experimental Insights

Identification of Plastics in Mixtures and Blends through Pyrolysis-Gas Chromatography/Mass Spectrometry

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