We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Identification and assessment of microplastics in wastewater treatment plants using laser direct infrared spectroscopy and depolymerization-coupled liquid chromatography–tandem mass spectrometry
ClearDetection of microplastic traces in four different types of municipal wastewater treatment plants through FT-IR and TED-GC-MS
Researchers detected microplastic traces in four different types of municipal wastewater treatment plants using FT-IR and TED-GC-MS, finding that while treatment processes removed most microplastics, some were still released into receiving water bodies.
Methodologic insights aimed to set-up an innovative Laser Direct InfraRed (LDIR)-based method for the detection and characterization of microplastics in wastewaters
Researchers developed and validated a method using Laser Direct Infrared imaging technology to detect and characterize microplastics in wastewater. Testing at a large municipal treatment plant in Italy, they found that the facility removed about 82% of microplastics, with most remaining particles smaller than 100 micrometers. The study provides a reproducible analytical approach that could help standardize how microplastic contamination in wastewater is measured and compared across different facilities.
Sequential quantification of number and mass of microplastics in municipal wastewater using Fourier-transform infrared spectroscopy and pyrolysis gas chromatography-mass spectrometry
Researchers developed a sequential analytical method combining FTIR microscopy and pyrolysis-GC/MS to identify and quantify microplastics in municipal wastewater samples, with FTIR providing polymer type and physical dimensions and Pyr-GC/MS providing chemical composition. The combined approach improves accuracy compared to using either method alone.
Characterization of microplastics in the septic tank via laser direct infrared spectroscopy
Researchers used laser direct infrared spectroscopy to characterize microplastics in septic tanks for the first time, identifying significant particle concentrations dominated by polyethylene and polypropylene, revealing septic systems as an overlooked pathway for microplastic release to the environment.
Microplastic Monitoring at Different Stages in a Wastewater Treatment Plant Using Reflectance Micro-FTIR Imaging
Researchers used reflectance micro-FTIR imaging to monitor microplastic presence at multiple treatment stages within a wastewater treatment plant, addressing the challenge of analyzing MPs in biogenic organic matter-rich matrices. The study mapped how microplastic identity, abundance, and size distribution changed through primary and secondary treatment, providing insight into WWTP contributions to aquatic microplastic pollution.
IR microspectroscopic identification of microplastics in municipal wastewater treatment plants
Researchers used infrared microspectroscopy to identify microplastics at three municipal wastewater treatment plants in Thailand employing different treatment processes, finding varied levels of microplastic contamination tied to urbanization level and treatment technology.
Quantification of microplastic mass and removal rates at wastewater treatment plants applying Focal Plane Array (FPA)-based Fourier Transform Infrared (FT-IR) imaging
This study quantified microplastic mass and calculated removal rates at wastewater treatment plants, finding that while plants remove a large proportion of incoming microplastics, the residual discharge still represents a substantial ongoing input to receiving water bodies.
Microplastiche: classificazione, identificazione e rimozione all'interno degli impianti di trattamento delle acque reflue
This Italian-language paper reviews how microplastics are classified, identified using techniques like FTIR spectroscopy, and removed in wastewater treatment plants. Conventional treatment plants remove a substantial portion of microplastics but still allow many particles to pass through into the environment. The review calls for better treatment technologies and standardized methods to assess microplastic removal efficiency.
Dual-method analysis of microplastics in lake and wastewater treatment effluents: comparison of micro-FTIR and differential scanning calorimetry technique
Researchers compared micro-FTIR and differential scanning calorimetry (DSC) for detecting microplastics in lake water and wastewater treatment effluents, finding that both methods showed similar pollution trends but differed in specific results, with micro-FTIR identifying polymer types and DSC providing superior mass quantification from large-volume samples.
Comparison of Detection Methods of Microplastics in Landfill Mineralized Refuse and Selection of Degradation Degree Indexes
This study compared laser direct infrared spectroscopy and micro-Raman spectroscopy for detecting microplastics in landfill mineralized refuse, finding that both methods can identify plastics in complex waste matrices and that combining multiple degradation indices improved assessment of polymer breakdown state.
Microplastics in the effluent of a German wastewater treatment plant ‒ analysis with μ-FTIR spectroscopy
A German wastewater treatment plant was found to release microplastics in its treated effluent, with fibers as the dominant type. The study used detailed chemical characterization and identified wastewater plants as ongoing point sources of microplastic pollution entering aquatic environments.
Identification of microplastic in effluents of waste water treatment plants using focal plane array-based micro-Fourier-transform infrared imaging
Researchers analyzed effluent from 12 wastewater treatment plants in Germany and found microplastics in all of them, with estimates of up to 4 billion particles discharged per plant annually — predominantly polyethylene fragments and polyester fibers. Notably, one plant with an additional post-filtration step reduced microplastic discharge by 97%, showing that advanced filtration can dramatically cut the flow of plastic particles into waterways.
Microplastics in two German wastewater treatment plants: Year-long effluent analysis with FTIR and Py-GC/MS
Researchers analyzed microplastics in the effluents of two German wastewater treatment plants monthly over one year, revealing temporal variations in microplastic concentrations and polymer compositions entering receiving river systems.
A high-throughput, automated technique for microplastics detection, quantification, and characterization in surface waters using laser direct infrared spectroscopy
Researchers applied laser direct infrared spectroscopy in a high-throughput automated workflow to detect, quantify, and characterize microplastics in surface water from three urban creeks in Ohio. The method achieved 88.3% recovery and could identify particles as small as 20 micrometers by polymer type, size, and shape without manual intervention.
Identification and Quantification of Microplastics in the Marine Environment Using the Laser Direct Infrared (LDIR) Technique
Researchers evaluated the laser direct infrared (LDIR) technique for identifying and quantifying marine microplastics, demonstrating it as a faster and more automated alternative to conventional FTIR methods with comparable accuracy.
Spectroscopic analysis of microplastic contaminants in an urban wastewater treatment plant from Seoul, South Korea
Researchers performed systematic multi-spectroscopic analysis of microplastics at influent and effluent stages of a metropolitan wastewater treatment plant in Seoul, South Korea, using FTIR and microscopic methods to characterize MP type, size, and polymer composition. The study quantified treatment efficiency for MP removal and identified the dominant polymer types entering and leaving the WWTP, informing efforts to reduce microplastic discharge to urban waterways.
Microplastics in different water samples (seawater, freshwater, and wastewater): Methodology approach for characterization using micro-FTIR spectroscopy
Researchers developed a standardized methodology for detecting and characterizing small microplastics (10-500 micrometers) in different water types using micro-FTIR spectroscopy. The study tested various sample preparation approaches for seawater, freshwater, and wastewater, establishing reliable protocols for rinsing, digestion, and microplastic collection that can be used to assess treatment plant removal efficiency.
Microplastics monitoring in different environments: separation, physicochemical characterization, and quantification
Researchers systematically monitored microplastic contamination across multiple environments including a wastewater treatment plant, surrounding water bodies, and soils near plastic factories, characterizing shape, size, color, and polymer composition via microscopy and FTIR spectroscopy. They found fragments and fibers to be the most common microplastic shapes in water environments and documented simultaneous contamination across all sampled matrices.
Quantification and characterization of microplastics in coastal environments: Insights from laser direct infrared imaging
Researchers used laser direct infrared imaging to identify and quantify microplastics in sediment and seawater samples from coastal areas in Auckland, New Zealand. The study detected nine common plastic polymer types and demonstrated that this analytical technique provides efficient and accurate characterization of microplastic contamination in environmental samples.
Microplastic in Danish wastewater: Sources, occurrences and fate
Researchers evaluated the role of Danish wastewater treatment plants in microplastic emissions by analyzing samples from 10 WWTPs, associated sludge, and farmland soils using FTIR imaging, identifying the amounts, polymer types, and potential sources of microplastics entering the environment.
Microplastic analysis in sediment samples utilizing quantum cascade laser- infrared spectroscopy and pyrolysis gass chromatography mass spectrometry
Researchers analyzed microplastics in marine sediment samples from Norwegian open-sea areas using both quantum cascade laser infrared spectroscopy combined with machine learning classification and pyrolysis-gas chromatography-mass spectrometry, comparing the complementary strengths of these identification and quantification approaches. They developed optimized protocols including density separation and two-step chemical digestion, finding the combined methods provided accurate, selective, and efficient characterization of diverse microplastic types.
Refined Analysis of Microplastics: Integrating Infrared and Raman Spectroscopy
This study optimized the use of Fourier Transform Infrared Spectroscopy (FTIR) and Raman spectroscopy for characterizing microplastics in aquatic environments, finding that integrating both techniques improves identification accuracy and physicochemical characterization.
An investigation on the applications of advanced Infrared Spectroscopy, Spectral Imaging and Machine Learning for Polymer Characterization, including microplastics
This study integrated advanced infrared spectroscopy, spectral imaging, chemometrics, and machine learning to identify and characterize microplastics and polymer degradation products. The combination of techniques improved both the accuracy and throughput of MP analysis compared to conventional methods.
Contributions of Fourier transform infrared spectroscopy in microplastic pollution research: A review
This review covers advances in Fourier transform infrared (FTIR) spectroscopy techniques — including chemical imaging — for identifying polymer types in microplastic samples and tracing their fate in different environmental matrices.