We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Accurate sampling of undisturbed top sediment from grab sampler collected using aluminum tube and stainless-steel containers for shallow and deep-sea applications
AI summary Read the abstract
Researchers developed a sediment sampling protocol using a Kinoshita-type grab sampler with stainless steel containers and aluminum tubes to collect microplastics and macroplastics from 133 marine sediment samples at depths of 20-800 m during the GB24 geological survey cruise, minimizing contamination while maintaining sample integrity.
This study describes a sediment sampling protocol using a Kinoshita-type grab (K-grab) sediment sampler to collect and analyze microplastics (<5 mm) and macroplastics (>5 mm) in marine sediments. During the GB24 geological survey cruise aboard the , 133 surface sediment samples were collected from depths of 20-800 m. The K-grab, equipped with a head-slide weight mechanism, enhanced sampling efficiency across various sediment types. For microplastics, stainless steel containers and J-shaped aluminum tubes minimized contamination while maintaining sample integrity. Macroplastics were separated using a 5 mm mesh and analyzed on board. Method verification confirmed high-spatial-resolution sampling with minimal contamination. These results demonstrate that the K-grab is a reliable tool for microplastic and macroplastic analysis, providing valuable data on plastic pollution in marine sediments.•This study describes a sediment sampling protocol using a grab sampler to collect and analyze microplastics (<5 mm) and macroplastics (>5 mm) in marine sediments.•During the survey, 133 surface sediment samples were collected from depths of 20-800 m, with microplastics handled using J-shaped aluminum tubes and stainless steel containers to minimize contamination while maintaining sample integrity.•Macroplastics were separated using a 5 mm mesh and analyzed on board. Method verification confirmed high-spatial-resolution sampling with minimal contamination.
More Papers Like This
Sediment sampling with a core sampler equipped with aluminum tubes and an onboard processing protocol to avoid plastic contamination
AI summary Read the abstract
Researchers developed a sediment core sampler equipped with aluminium tubes and an onboard processing protocol specifically designed to prevent plastic contamination during deep-sea microplastic sampling. The method addresses the widespread problem of polycarbonate, acrylic, and PVC sampling tube contamination, particularly during collection of coarse sediments.
Global mapping for the occurrence of all-sized microplastics in seafloor sediments
AI summary Read the abstract
Researchers compiled global seafloor microplastic data from 155 marine sediment samples including detailed sampling metadata and abundance measurements for 20 microplastic categories, providing foundational data for understanding the distribution and uncertainty of microplastic contamination on the seafloor.
Practical Evaluation of the Effectiveness of Different Samplers for Microplastic Analysis in Seafloor Sediments
AI summary Read the abstract
Researchers compared Multicorer and Van Veen Grab samplers for microplastic analysis in seafloor sediments from the western Black Sea shelf, finding that the Van Veen Grab likely underestimates microplastic concentrations due to disturbance of the upper sediment layer where microplastics accumulate, and recommending harmonisation of sampling methods for FAIR-data repositories.
A novel method enabling the accurate quantification of microplastics in the water column of deep ocean
AI summary Read the abstract
A new sampling method was developed to accurately measure microplastics in the deep ocean water column, addressing gaps left by traditional net trawls that miss very small particles. Reliable deep-sea sampling is critical since the deep ocean is thought to be a major sink for global microplastic pollution.
Evaluation of the Munich Plastic Sediment Separator efficiency in extraction of microplastics from natural marine bottom sediments
AI summary Read the abstract
The Munich Plastic Sediment Separator was tested on unprepared natural marine sediment samples and found to efficiently extract microplastics without prior cleaning. Validating low-cost, practical extraction tools is important for standardizing microplastic monitoring in marine sediments.
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.