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In-Situ Towed Sampling Device for Integrated Calibration and Monitoring of Surface Water Microplastics
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This study developed a prototype in-situ towed sensor device for real-time measurement of microplastic concentrations at the ocean surface, using optical particle detection to monitor spatial distribution during ship surveys. Low-cost in-situ sensors can dramatically increase the geographic coverage of microplastic monitoring compared to traditional bottle sampling methods.
Current advancements in the emerging technology of embed sensors for ocean research now offers opportunities to apply low-cost solutions for real-time investigation of the spatial distribution of microplastics and particles. Microplastics absorb and transfer chemicals that cause organisms to be intoxicated or starved. This project is focused on the design and development of a prototype sensor for in-situ measurements of microplastic concentrations. This device makes use of data from optical interruptions of particles in a flow through water stream onboard a towed platform relayed to a ship board computer via USB. The prototype device consists of 5 components (1) architecture of the water sample flow-through system; (2) the selection of photo interrupter sensors for particle detection; (3) inclusion of a filter net and codend collection for calibration; (4) the layout of these components on a towed platform; and (5) the power and data communication requirements. Results show the spatial variability of microplastic and particle concentrations. An overall rough positive correlation between particle and microplastic concentrations is observed at Shilshole Bay Marina. Tests confirm the stability and ability of the device to take particle and microplastic measurements.
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This review examines state-of-the-art technologies for in situ offshore monitoring and detection of microplastics in seawater, addressing the cost and time inefficiencies of conventional manta net sampling followed by laboratory analysis. The review assesses emerging sensor-based and optical systems capable of real-time microplastic detection in coastal and open ocean environments.
Optical System for In-situ Detection of Microplastics
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Researchers developed a portable optical system capable of detecting, identifying, continuously monitoring, and quantifying microplastics in situ at natural water bodies. The system uses optical techniques to observe the temporal behavior of microplastic concentrations at fixed locations, enabling real-time environmental monitoring without sample collection and laboratory processing.
Deployment of an innovative microplastic sensor in PLOCAN offshore ocean platform.
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Researchers deployed an innovative microplastic sensor at an offshore ocean platform to measure real-time plastic particle concentrations in seawater. The sensor demonstrated feasibility for continuous, in situ monitoring of microplastic contamination in open ocean environments.
A New Approach for Detecting Oceanic Microplastics in Real Time
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Researchers at Applied Ocean Sciences developed a novel real-time sensor system for detecting and analyzing oceanic microplastics, designed to overcome the time and cost limitations of conventional sampling and laboratory analysis methods. The system uses optical sensing techniques to rapidly characterize microplastics in situ, enabling more efficient large-scale ocean monitoring.
Toward In Situ Detection, Sizing and Identification of Microplastics in Water at the National Research Council of Canada
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Researchers at the National Research Council of Canada described in-development in situ technologies for detecting, sizing, and identifying microplastics in ocean water, aiming to overcome the time and resource limitations of conventional laboratory-based monitoring methods. The paper outlines instrument concepts targeting real-time, on-site microplastic pollution assessment to improve the efficiency of marine environmental monitoring.
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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.