We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
The Colors of the Ocean Plastics
AI summary Read the abstract
Researchers developed a systematic method using a 120-color Pantone reference palette to objectively classify the colors of floating ocean plastic fragments from a global collection. The study found that white and transparent or translucent plastics were the most abundant at 47%, followed by yellow and blue, providing a standardized approach that reduces observer subjectivity in plastic pollution research.
Characterization of the color of the plastic is often included in studies on plastic pollution. However, the comparability and relevance of this information is limited by methodology or observer subjectivity. Based on the analysis of thousands of floating plastic fragments from a global collection, here we propose a systematic semiautomatic method to analyze colors by using a reference palette of 120 Pantone colors. The most abundant colors were white and transparent/translucent (47%), yellow and brown (26%), and blue-like (9%). The white color increased in the smallest pieces (<5 mm) and far from coastal sources (>500 km). Both fragmentation and discolouration of ocean plastics may occur because of longer exposure time to sunlight in nature. In addition, yellow items peaked at around 1 cm and brown colors at around 1 mm, supporting the notion that yellowing precedes tanning in the aging process, which is paralleled by fragmentation. Apart from the effects of the weathering, our results suggest a second-order modulation of the color distributions of marine microplastics by the selective action of visual predators. The present work provides methodological tools and a wide empirical background to further the interpretation and applicability of the color information on ocean plastics.
More Papers Like This
Fashion fades, microplastics are eternal: a critical systematic literature review to assess microplastic fibre colours in environmental samples
AI summary Read the abstract
Researchers conducted a systematic review of 80 studies on microplastic fiber colors across air, water, sediment, and biota, finding that transparent, blue, and black fibers dominate globally but with compartment-specific patterns — blue fibers lead in biota and water while transparent fibers prevail in sediments — and identifying major gaps in standardized color reporting methods.
Concentration, anisotropic and apparent colour effects on optical reflectance properties of virgin and ocean-harvested plastics
AI summary Read the abstract
Researchers measured the light reflectance of virgin and ocean-collected plastic samples across a wide range of wavelengths to build a spectral reference library that could support satellite-based detection of ocean plastic debris. They found that weathered ocean plastics share distinct light absorption features and lower reflectance than new plastics, offering a potential path toward identifying plastic type and coverage from space.
Percentage composition of color of microplastic: A) sediment, B) water.
AI summary Read the abstract
This study presents color composition data for microplastics detected in sediment and water samples, characterizing the distribution of different color categories across both environmental matrices.
Colour and size influences plastic microbead underestimation, regardless of sediment grain size
AI summary Read the abstract
White and light-colored microplastic beads were significantly undercounted compared to darker ones in visual assessments, regardless of sediment grain size. This color bias in manual sorting means that common lightweight, light-colored plastic particles may be systematically underreported in environmental microplastic surveys.
Indoor spectroradiometric characterization of plastic litters commonly polluting the Mediterranean Sea: toward the application of multispectral imagery
AI summary Read the abstract
Researchers used a laboratory spectrometer to measure the light reflectance of common plastic types found in the Mediterranean Sea as a step toward developing remote sensing methods to detect marine plastic pollution from satellites or aircraft. Aerial monitoring of plastic pollution could revolutionize our ability to track and manage large-scale ocean plastic contamination.
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.