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61,005 resultsShowing papers similar to AFM-IR as a tool to detect nanoplastic particles in aerosols
ClearPossibilities and Limitations of AFM-IR to Detect Nanoplastic Particles in the Atmosphere
Researchers evaluated the capabilities and limitations of AFM-IR spectroscopy for detecting nanoplastic particles in atmospheric samples. They found that while the technique can identify individual nanoplastic particles, significant challenges remain in quantifying atmospheric nanoplastic concentrations due to detection limits and sample preparation complexity. The study highlights the need for improved analytical methods to assess human inhalation exposure to nanoplastics.
Identification of microplastics and nanoplastics in environmental water by AFM-IR
Scientists used a new technique called AFM-IR, which combines atomic force microscopy with infrared spectroscopy, to identify individual nanoplastic particles in environmental water for the first time. This method can detect particles as small as 100 nanometers, far beyond the limits of traditional microscopy. They found several types of nanoplastics in a water sample, including an epoxy and a biodegradable plastic, demonstrating that this tool could improve our ability to track nanoplastic pollution.
Thermal desorption and analysis of atmospheric nanoplastics via PTR-MS
Scientists developed a new method to detect tiny plastic particles called nanoplastics in air and water by heating them up and analyzing the gases they release. This is important because nanoplastics are so small they can get into our bodies through the air we breathe and food we eat, but until now they've been very hard to measure. The new technique could help researchers better understand how much plastic pollution we're actually exposed to and its potential health effects.
HoLDI mass spectrometry for rapid, solventless detection of airborne nanoplastics and co-occurring aerosol organics
Scientists developed a new, faster way to detect tiny plastic particles floating in the air we breathe, both indoors and outdoors. The method found plastic particles from common materials like polyethylene in indoor air and cancer-causing chemicals attached to nano-sized particles in outdoor air. This breakthrough could help us better understand how much plastic pollution we're breathing in and its potential health risks.
Analysing micro- and nanoplastics with cutting-edge infrared spectroscopy techniques: a critical review
This review evaluates cutting-edge infrared spectroscopy techniques for detecting and analyzing micro- and nanoplastics in environmental and food samples. Better detection methods are crucial for understanding human exposure because they allow scientists to measure smaller particles more accurately, including nanoplastics that are small enough to cross biological barriers and accumulate in human tissues.
The quantification of the airborne plastic particles of 0.43–11 μm: Procedure development and application to atmospheric environment
Researchers developed a new method for measuring airborne plastic particles as small as 0.43 micrometers, a size range rarely studied before. Testing the approach in real atmospheric conditions, they detected multiple types of plastic polymers in the air, including polyethylene, polystyrene, and PET, providing evidence that people are regularly breathing in ultrafine plastic particles.
Laboratory Investigation of Nanoplastic Mixing States with Water-Soluble Coatings using Single-Particle Mass Spectrometry
Scientists developed a new method to detect tiny plastic particles in the air and see what other chemicals stick to them, like salts and acids. They found that these nanoplastics can pick up different coatings as they float through the atmosphere, which changes how they move and where they end up. This matters for human health because understanding how these plastic particles travel and what they carry with them helps us predict where they might be breathed in by people.
Recognition and detection technology for microplastic, its source and health effects
This review summarizes current knowledge about detecting microplastics and their effects on human health, covering methods like FTIR spectroscopy and Raman imaging. The authors highlight that micro- and nanoplastics can cause a range of health problems including oxidative stress, reduced reproductive ability, inflammation, and damage to the circulatory and respiratory systems. The review emphasizes the urgent need for better detection methods so that researchers and regulators can accurately assess how much microplastic people are actually exposed to.
Quantifying the Chemical Composition and Real-Time Mass Loading of Nanoplastic Particles in the Atmosphere Using Aerosol Mass Spectrometry
Scientists developed the first real-time method to measure nanoplastic particles in the air using a specialized instrument called an aerosol mass spectrometer. They detected polystyrene nanoplastics at an urban site in China at concentrations of around 47 nanograms per cubic meter, confirming that we are breathing in tiny plastic particles. This tool could help researchers better understand how much airborne nanoplastic pollution people are actually exposed to.
Raman Spectral Imaging for the Detection of Inhalable Microplastics in Ambient Particulate Matter Samples
Researchers developed a filter-based sampling method compatible with Raman spectral imaging to detect inhalable-sized microplastics in ambient air samples. They successfully identified and mapped plastic particles as small as a few micrometers on sampling filters. The study provides a practical new analytical approach for measuring airborne microplastic exposure, an area where reliable detection methods have been lacking.
Detection of Microplastics in Ambient Particulate Matter Using Raman Spectral Imaging and Chemometric Analysis
Researchers optimized Raman spectral imaging combined with chemometric analysis to detect and identify microplastics in ambient airborne particulate matter at sizes down to 2 micrometers. The study demonstrates a method for spectroscopically verifying the chemical composition of airborne microplastics, addressing concerns about human inhalation exposure to small plastic particles that can reach the lungs.
Novel Single-Particle Analytical Technique for Inhalable Airborne Microplastic Particles by the Combined Use of Fluorescence Microscopy, Raman Microspectrometry, and SEM/EDX
Researchers developed a new method combining fluorescence microscopy, Raman spectroscopy, and electron microscopy to analyze individual airborne microplastic particles small enough to inhale. The technique can identify both the polymer type and chemical composition of particles under 10 micrometers found in urban air samples. Better tools for characterizing breathable microplastics are essential for understanding respiratory exposure risks.
Identifying Microplastics in Laboratory and Atmospheric Aerosol Mixtures via Optical Photothermal Infrared and Raman Microspectroscopy
Researchers developed optical photothermal infrared spectroscopy methods to identify microplastics in both laboratory-prepared and real atmospheric aerosol samples, demonstrating the technique's ability to distinguish plastic particles from other aerosol components in complex air quality monitoring contexts.
Development and validation of an analytical pyrolysis method for detection of airborne polystyrene nanoparticles
Scientists developed and validated a new method using thermal analysis to detect airborne polystyrene nanoparticles, which are too small for most current detection techniques. The method can measure nanoplastics at the nanogram level, enabling researchers to quantify these tiny particles in air samples. This is important for human health research because airborne nanoplastics are likely widespread but have been difficult to measure, and understanding air concentrations is essential for assessing how much people inhale.
Size-Resolved Identification and Quantification of Micro/Nanoplastics in Indoor Air Using Pyrolysis Gas Chromatography–Ion Mobility Mass Spectrometry
Scientists developed a new method to measure micro and nanoplastics in indoor air down to 56 nanometers in size, using advanced mass spectrometry techniques. They found significant concentrations of plastic particles in both a laboratory and a private home, with polystyrene being the most common type, and also detected flame retardant chemicals associated with plastic furniture foam. This study provides some of the first evidence that people are breathing in substantial amounts of nanoscale plastic particles indoors, where most people spend the majority of their time.
Detection of microplastics in human lung tissue using μFTIR spectroscopy
Researchers analyzed lung tissue from 13 people and found microplastics in 11 of the samples, identifying 12 different plastic types including polypropylene and polyester. The particles were found in all regions of the lungs, with significantly higher concentrations in the lower lung. This is one of the first studies to directly confirm that microplastics from everyday environments can be inhaled and accumulate deep in human lung tissue.
Novel Single-Particle Analytical Technique for Inhalable Airborne Microplastic Particles by the Combined Use of Fluorescence Microscopy, Raman Microspectrometry, and SEM/EDX
Researchers developed a novel single-particle analytical method combining fluorescence microscopy, Raman microspectrometry, and SEM/EDX to characterize inhalable airborne microplastics smaller than 10 µm in ambient PM10 aerosols, addressing a critical gap in understanding respiratory exposure to plastic particles.
IdentifyingMicroplastics in Laboratory and AtmosphericAerosol Mixtures via Optical Photothermal Infrared and Raman Microspectroscopy
This study applied optical photothermal infrared spectroscopy to identify microplastics in atmospheric aerosol mixtures, demonstrating that the technique can distinguish plastic particles by polymer type in complex air samples relevant to understanding human inhalation exposure to airborne MPs.
Inhalable microplastics prevails in air: Exploring the size detection limit
Researchers developed a method using Raman microscopy to detect airborne microplastics as small as 1 micrometer, significantly improving upon previous detection limits. They found that the number of microplastics in air samples increased dramatically when smaller particles were counted, with inhalable-sized particles being the most prevalent. The findings suggest that current estimates of human microplastic exposure through breathing may substantially undercount the actual amount.
Quantitation of Atmospheric Suspended Polystyrene Nanoplastics by Active Sampling Prior to Pyrolysis–Gas Chromatography–Mass Spectrometry
Scientists developed a method to measure polystyrene nanoplastics suspended in outdoor air using active air sampling and a specialized chemical analysis technique. They detected nanoplastics at multiple locations, confirming that these ultra-small plastic particles are present in the air we breathe. Since nanoplastics are small enough to penetrate deep into the lungs and potentially enter the bloodstream, reliable measurement methods like this are critical for understanding airborne exposure risks.
Detecting small microplastics down to 1.3 μm using large area ATR-FTIR
Researchers introduced large-area ATR-FTIR spectroscopy as a new technique capable of detecting microplastics as small as 1.3 micrometers, outperforming conventional micro-FTIR for small particle detection in marine water samples.
A fluorescence approach for an online measurement technique of atmospheric microplastics
Scientists developed a fluorescence-based instrument that can detect airborne microplastic particles in real time, rather than requiring slow laboratory analysis. The tool successfully identified common plastic types like PET, polyethylene, and polypropylene as individual particles in the air. This technology could help researchers better understand how much microplastic people are actually breathing in, which is important for assessing respiratory health risks from airborne plastic pollution.
Challenges and Advances in Analytical Techniques to Detect Micro- and Nanoplastics
This research review summarizes the current methods scientists use to detect and study microplastics and nanoplastics - tiny plastic particles that can get into our environment, food, and bodies. The authors explain that identifying these extremely small plastic pieces is very challenging and requires advanced laboratory techniques to understand what types of plastics they are and how much is present. Better detection methods are important because we need to understand how much plastic pollution we're exposed to and its potential effects on human health.
A review of airborne micro- and nano-plastics: Sampling methods, analytical techniques, and exposure risks.
This review of 140 articles on airborne micro- and nanoplastics found that diverse sampling and analytical methods make cross-study comparisons difficult, limiting exposure risk assessment. The authors recommend standardization of methods and highlight that active samplers and FTIR/Raman spectroscopy are the most commonly used approaches for collecting and identifying atmospheric plastic particles.