We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Quantitation of Atmospheric Suspended Polystyrene Nanoplastics by Active Sampling Prior to Pyrolysis–Gas Chromatography–Mass Spectrometry
AI summary Read the abstract
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.
Plastic has been demonstrated to release nanoplastics (NPs) into the atmosphere under sunlight irradiation, posing a continuous health risk to the respiratory system. However, due to lack of reliable quantification methods, the occurrence and distribution of NPs in the atmosphere remain unclear. Polystyrene (PS) micro- and nanoplastics (MNPs) represent a crucial component of atmospheric MNPs. In this study, we proposed a simple and robust method for determining the concentration of atmospheric PS NPs using pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS). Following active sampling, the filter membrane is directly ground and introduced into the Py-GC/MS system to quantify PS NPs. The proposed method demonstrates excellent reproducibility and high sensitivity, with a detection limit as low as down to 15 pg/m3 for PS NPs. By using this method, the occurrence of PS NPs in both indoor and outdoor atmospheres has been confirmed. Furthermore, the results showed that the abundance of outdoor PS NPs was significantly higher than that of indoor samples, and there was no significant difference in NP vertical distribution within a height of 28.6 m. This method can be applied for the routine monitoring of atmospheric PS NPs and for evaluating their risk to human health.
More Papers Like This
Quantifying the Chemical Composition and Real-Time Mass Loading of Nanoplastic Particles in the Atmosphere Using Aerosol Mass Spectrometry
AI summary Read the abstract
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.
In situ chemical characterization of airborne nanoplastic particles by aerosol mass spectrometry
AI summary Read the abstract
Researchers used aerosol mass spectrometry to chemically characterize airborne nanoplastic particles in real time in urban air. They detected multiple polymer types including polyethylene and polystyrene at concentrations that varied with location and weather conditions. This approach enables in situ monitoring of atmospheric nanoplastics without sample collection, advancing understanding of human inhalation exposure.
Size-Resolved Identification and Quantification of Micro/Nanoplastics in Indoor Air Using Pyrolysis Gas Chromatography–Ion Mobility Mass Spectrometry
AI summary Read the abstract
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.
Development and validation of an analytical pyrolysis method for detection of airborne polystyrene nanoparticles
AI summary Read the abstract
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.
The quantification of the airborne plastic particles of 0.43–11 μm: Procedure development and application to atmospheric environment
AI summary Read the abstract
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.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.