PM25 in the hottest micro plastic ocean

2022-08-24
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Microplastics - "PM2.5 in the ocean"

the sea looks blue and clear, but in fact there are many "invisible" garbage - microplastics. The "Xiangyanghong 01" ship, which is carrying out China's first global marine comprehensive scientific survey and China Ocean 46 voyage, carried out China's first microplastics survey in the Atlantic Ocean

according to Li chuanshun, chief scientist of the Atlantic segment, microplastics refers to plastic particles and textile fibers with very small particle size. It is generally believed that the diameter is less than 5 mm, which mainly comes from small plastic particles directly discharged into the environment and plastic debris produced by the degradation of large pieces of plastic waste. Microplastics are also known as "PM2.5 in the ocean" because they are pollution carriers

"although microplastics are small, they are difficult to observe with the naked eye, but they have strong ability to absorb pollutants." Li chuanshun said that due to human activities, there are a large number of persistent organic pollutants in the offshore environment, which are not easy to dissolve in water. Once microplastics meet these pollutants, they will gather to form an organic pollution sphere. Moreover, microplastics will float around with the ocean current, further expanding the scope of pollution

at present, in the South Atlantic, the "Xiangyanghong 01" ship has completed more than 100 investigations of micro plastics in surface seawater, and has collected 7 samples of micro plastics in whole water and deep sea water with the help of thermohalimeter, which provides data for investigating the spatial distribution characteristics and migration path of micro plastics in this sea area when Jin Yong, an academician of the Chinese Academy of engineering, was interviewed by reporters recently

how to deal with the micro plastic samples obtained? Li Qian, who carried out the microplastics investigation with the ship, said that the researchers concentrated and filtered the seawater samples collected, enriched the microplastics contained in them on the nitric acid fiber membrane, and then further analyzed them after returning to the laboratory on the shore

"human beings are at the top end of the food chain. Microplastics enter the marine organisms through the food chain in the sea 4 with high accuracy, which ultimately threatens human health." Li Qian said

indeed, although micro plastics are small, their power is not small. The United Nations Environment Programme has listed microplastics pollution as one of the top ten urgent environmental issues in 2014. With the improvement of people's awareness of marine ecological protection and marine environmental health, microplastics has become a hot issue in marine scientific research

this year, China's new generation of oceangoing comprehensive scientific research vessel "science" obtained micro plastic samples from China's coastal waters to the Western Pacific; China's eighth Arctic scientific expedition made the first voyage around the Arctic Ocean and carried out marine plastic waste and micro plastic monitoring in the Arctic and sub Arctic regions

the global scientific research voyage carried out by "Xiangyanghong 01" also filled the gap in China's microplastics observation in the South Atlantic. Sunyongfu, deputy director of the first Institute of Oceanography of the State Oceanic Administration and leader of the Atlantic segment, said that as marine plastic waste has become a global problem, it is no longer feasible to carry out in-depth micro plastic ppm level tracking research in different sea areas, which will help promote the integration of China's marine micro plastic monitoring into the full scope of the marine waste monitoring system by turning down the iris aperture of the under stage condenser and looking into the ball in the tube, This is also an important measure for China to participate in global ocean governance

after all, the breadth and depth of the impact of marine plastic pollution are beyond imagination. Researchers at the University of Newcastle in the UK recently reported that crustaceans ingested plastic nearly 7 miles (about 11 kilometers) deep in the Pacific Ocean. Researchers said that this may be the deepest record of the discovery of micro plastics, which means that almost no marine life can be free from human made garbage pollution

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