Influence of interaction on accuracy of quantification of mixed microplastics using Py-GC/MS

Lou, Fangfang; Wang, Jun; Sun, Chen; Song, Jiaxing; Wang, Wanli; Pan, Yuhan; Huang, Qunxing; Yan, Jun

doi:10.1016/j.jece.2022.108012

Cited by 11 publications

(3 citation statements)

References 52 publications

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“…The pyrolysis-gas chromatography-mass spectroscopy system (Py-GC/MS) simultaneously combines gas chromatography and mass spectrometry [29]. This process is destructive to the sample, gradually increasing the temperature of the polymer in order to release short-chain small oligomers monomers and then passing the product fragments to the GC/MS to determine their mass-charge ratio and ultimately infer the polymer type [30,31].…”

Section: Pyrolysis-gas Chromatography-mass Spectroscopymentioning

confidence: 99%

Comparative Evaluation of Analytical Techniques for Quantifying and Characterizing Polyethylene Microplastics in Farmland Soil Samples

Wang,

et al. 2024

Agriculture

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The presence of microplastics in soil has become a significant global concern, posing a threat to environmental, agricultural, and human health. However, the use of various detection methods has led to significant discrepancies in the statistics reported for the abundance of soil microplastics across the available literature, resulting in poor comparability across the available literature. Studies have shown that plastic film residue is among the main primary sources of microplastics in farmland soils. Therefore, we manufactured and selected polyethylene microplastics (PE-MPs) from plastic film and combined them with soil samples after density separation treatment, forming a spiked test soil sample, which was subjected to density separation and extraction using a ZnCl2 solution. The experiment used visual inspection by stereo microscopy, micro-Fourier transform infrared spectroscopy, micro-Raman spectrometry, laser direct infrared imaging, and pyrolysis-gas chromatography–mass spectroscopy for the quantitative analysis of spiked soil. This study systematically assessed and compared these five common soil microplastic detection methods. The results revealed different quantitative detection accuracies across various particle size ranges. Micro-Fourier transform infrared spectroscopy showed a broader applicable particle size range (20–5000 μm) and higher detection rate (91%), while the detection range (>50 μm) and rate (70%) of visual inspection through stereo microscopy were lower. For the identification of microplastic morphology, laser direct infrared imaging performed better, whereas micro-Fourier transform infrared spectroscopy had the advantage in determining the types of polymers present over micro-Raman spectrometry. The advantages, disadvantages, and detection rates of the above five detection methods were clarified during the detection process. Considering these findings and similar studies, we suggest three combinations of the evaluated methods to optimize the detection of PE-MPs.

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Section: Pyrolysis-gas Chromatography-mass Spectroscopymentioning

confidence: 99%

Comparative Evaluation of Analytical Techniques for Quantifying and Characterizing Polyethylene Microplastics in Farmland Soil Samples

Wang,

et al. 2024

Agriculture

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“…Several strategies based on pyrolysis–GC/MS [ 9 , 10 ], thermogravimetric analysis combined with gas chromatography coupled to mass spectrometry (TGA-GC/MS) [ 11 , 12 ], Raman spectroscopy [ [13] , [14] , [15] ], and FTIR-ATR spectroscopy [ [16] , [17] , [18] , [19] ] have been employed to analyze MPs in different environmental matrices. Other methodologies which incorporated microscopic analytical techniques and based on optical spectroscopy have been extensively applied for the detection, identification and characterization of plastic particles due to their relative low-cost, easiness, and time efficciency [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Identification and morphological characterization of different types of plastic microparticles

Soliz,

Paniagua González,

Muñoz-Arnanz

et al. 2024

Heliyon

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“…As concerns mixtures, it has been possible to identify eleven types of polymers in a mixture combining two solutions with nine polymers and a solid mixture of two polymers with an inorganic diluent in order to achieve small sample amounts [ 71 ]; the identification of different polymers in a mixture can also be achieved through an algorithm, with the lowest detectable amount being equal to 1 µg [ 72 ]. In addition, Lou et al [ 73 ] displayed the enhancement in quantification through the study of several typical characteristic peaks of polymers after pyrolysis.…”

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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Influence of interaction on accuracy of quantification of mixed microplastics using Py-GC/MS

Cited by 11 publications

References 52 publications

Comparative Evaluation of Analytical Techniques for Quantifying and Characterizing Polyethylene Microplastics in Farmland Soil Samples

Comparative Evaluation of Analytical Techniques for Quantifying and Characterizing Polyethylene Microplastics in Farmland Soil Samples

Identification and morphological characterization of different types of plastic microparticles

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

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