A high-throughput, automated technique for microplastics detection, quantification, and characterization in surface waters using laser direct infrared spectroscopy

Whiting, Quinn T; O'Connor, Keith; Potter, Phillip M.; Al-Abed, Souhail R.

doi:10.1007/s00216-022-04371-2

Cited by 23 publications

(11 citation statements)

References 53 publications

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“…Values ranged from 0 to 1, where larger values indicate a higher probability of specific microplastics. In this study, we included microplastics with a matching degree of ≥0.70 according to several previous LDIR studies. − Alternatively, because of the subtle difference in the infrared radiation absorption spectrum between polyamides and natural proteins, polyamide was classified as a nonmicroplastic herein.…”

Section: Methodsmentioning

confidence: 99%

New Evidence of Microplastics in the Lower Respiratory Tract: Inhalation through Smoking

Li²,

Wang

et al. 2023

Environ. Sci. Technol.

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To investigate the relation of smoking and microplastic inhalation, we conducted a prospective study combining population-based and experimental work. Bronchoalveolar lavage fluid (BALF) samples from 17 smokers and 15 nonsmokers were collected in Zhuhai City, China. We simulated an active smoking model to explore the contribution of smoking to inhaled microplastics. The characteristics of microplastics in BALF samples and cigarette smoke were determined using laser direct infrared spectroscopy. We compared the differences between smokers and nonsmokers as well as between cigarette smoke and control groups. Microplastics were identified positive in all BALF samples. Smokers had higher concentrations of total microplastics (25.86 particles/ g), polyurethane (11.34 particles/g), and silicone (1.15 particles/ g) than nonsmokers. In the cigarette smoking simulation model, higher concentrations of total microplastics (9.99 particles/L), polyurethane (4.66 particles/L), and silicone (2.78 particles/L) were present in the cigarette smoke than those in the control group. We confirmed and extended the evidence on the presence of microplastics in the lower respiratory tract. These findings also provide new evidence on the relation between cigarette smoking and microplastic inhalation.

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Section: Methodsmentioning

confidence: 99%

New Evidence of Microplastics in the Lower Respiratory Tract: Inhalation through Smoking

Li²,

Wang

et al. 2023

Environ. Sci. Technol.

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“…A newer analytical method for water using laser direct infrared spectroscopy (LDIR) shows the potential for reducing analysis times considerably as compared to FTIR or Raman spectroscopy while still maintaining the detection limits of these methods (20 μm) (Whiting et al 2022). NPs are more difficult to quantify, but methods development are underway (Stine et al 2023).…”

Section: Sampling and Analysis Methodsmentioning

confidence: 99%

The Plastiverse Extends to Hydrogeologic Systems: Microplastics Are an Important Emerging Groundwater Contaminant Class

Divine,

Killingstad,

Mortensen

et al. 2024

Groundwater Monitoring Rem

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“…The detection technology for microplastics is currently advancing at a rapid pace. The successful application and refinement of advanced detection techniques, such as mass spectrometry (MS), micro-Fourier-transform infrared (μ-FTIR) spectroscopy, micro-Raman (μ-Raman) spectroscopy, laser direct infrared (LD-IR) spectroscopy, and Nile Red (NR) fluorescent staining, as well as their combinations, in microplastic research have significantly enhanced the efficiency of identifying and quantifying microplastics in complex biological and environmental samples. − Furthermore, with the evolution of artificial intelligence (AI), the automatic identification and classification of microplastics based on machine learning are also becoming increasingly sophisticated. − The swift progress in microplastic detection and analysis technology facilitates the acquisition of extensive microplastic data. In this context, it becomes particularly vital to approach microplastic research with a holistic perspective to unveil the distribution, fate, and transport patterns of microplastics, as well as their impacts on the environment and organisms.…”

Section: Introductionmentioning

confidence: 99%

The “Microplastome” – A Holistic Perspective to Capture the Real-World Ecology of Microplastics

Li,

Bank

et al. 2024

Environ. Sci. Technol.

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Microplastic pollution, an emerging pollution issue, has become a significant environmental concern globally due to its ubiquitous, persistent, complex, toxic, and ever-increasing nature. As a multifaceted and diverse suite of small plastic particles with different physicochemical properties and associated matters such as absorbed chemicals and microbes, future research on microplastics will need to comprehensively consider their multidimensional attributes. Here, we introduce a novel, conceptual framework of the "microplastome", defined as the entirety of various plastic particles (<5 mm), and their associated matters such as chemicals and microbes, found within a sample and its overall environmental and toxicological impacts. As a novel concept, this paper aims to emphasize and call for a collective quantification and characterization of microplastics and for a more holistic understanding regarding the differences, connections, and effects of microplastics in different biotic and abiotic ecosystem compartments. Deriving from this lens, we present our insights and prospective trajectories for characterization, risk assessment, and source apportionment of microplastics. We hope this new paradigm can guide and propel microplastic research toward a more holistic era and contribute to an informed strategy for combating this globally important environmental pollution issue.

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A high-throughput, automated technique for microplastics detection, quantification, and characterization in surface waters using laser direct infrared spectroscopy

Cited by 23 publications

References 53 publications

New Evidence of Microplastics in the Lower Respiratory Tract: Inhalation through Smoking

New Evidence of Microplastics in the Lower Respiratory Tract: Inhalation through Smoking

The Plastiverse Extends to Hydrogeologic Systems: Microplastics Are an Important Emerging Groundwater Contaminant Class

The “Microplastome” – A Holistic Perspective to Capture the Real-World Ecology of Microplastics

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