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Photoluminescence‐Based Techniques for the Detection of Micro‐ and Nanoplastics
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This review examined photoluminescence-based techniques for detecting micro- and nanoplastics, evaluating fluorescent labeling and spectroscopic methods as promising approaches to address the challenge of identifying plastic particles at the smallest scales.
The growing numbers related to plastic pollution are impressive, with ca. 70 % of produced plastic (>350 tonnes/year) being indiscriminately wasted in the environment. The most dangerous forms of plastic pollution for biota and human health are micro- and nano-plastics (MNPs), which are ubiquitous and more bioavailable. Their elimination is extremely difficult, but the first challenge is their detection since existing protocols are unsatisfactory for microplastics and mostly absent for nanoplastics. After a discussion of the state of the art for MNPs detection, we specifically revise the techniques based on photoluminescence that represent very promising solutions for this problem. In this context, Nile Red staining is the most used strategy and we show here its pros and limitations, but we also discuss other more recent approaches, such as the use of fluorogenic probes based on perylene-bisimide and on fluorogenic hyaluronan nanogels, with the added values of biocompatibility and water solubility.
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Frontispiece: Photoluminescence‐Based Techniques for the Detection of Micro‐ and Nanoplastics
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This review article examines photoluminescence-based detection techniques for identifying micro- and nanoplastics in environmental samples. The paper discusses how fluorescence labeling, intrinsic plastic fluorescence, and surface-enhanced luminescence methods can be applied to improve the sensitivity and accuracy of plastic particle detection.
Novel Concepts for the Detection of Microplastics
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Researchers developed novel photoluminescence-based detection concepts for identifying microplastics in environmental samples, addressing the need for more automated and reliable monitoring methods. The approach could complement existing spectroscopic techniques and contribute to the development of standardized microplastic detection protocols.
Photoluminescence spectroscopy on commercially available plastic products
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Researchers tested photoluminescence spectroscopy as a method to identify and distinguish different types of commercially available plastic products, building on earlier work showing that plastics fluoresce differently than natural materials. The technique offers a potentially faster and cheaper alternative to standard FTIR and Raman spectroscopy for microplastic identification.
Exploring the potential of photoluminescence spectroscopy for the detection of microplastics
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This study explored the use of photoluminescence spectroscopy — where plastic particles fluoresce under light excitation — as an alternative to FTIR and Raman spectroscopy for detecting and characterizing microplastic and nanoplastic particles in various environmental matrices. The technique showed potential as a faster screening method for identifying plastics in water, food, and other samples.
Detection and Characterisation of Micro- and Nano-plastics in Water using Optical Spectroscopy
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This thesis explored photoluminescence spectroscopy as an alternative technique for detecting and characterizing micro- and nanoplastics in water, optimizing fluorescence excitation-emission features and comparing performance against conventional spectroscopic approaches.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.