Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Marine & Wildlife Sign in to save

Fate of microplastics in deep-sea sediments and its influencing factors: Evidence from the Eastern Indian Ocean

The Science of The Total Environment 2022 70 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Licheng Peng, Huaiyuan Qi, Huaiyuan Qi, Huaiyuan Qi, Huaiyuan Qi, Huaiyuan Qi, Huaiyuan Qi, Licheng Peng, Licheng Peng, Licheng Peng, Licheng Peng, Huaiyuan Qi, Licheng Peng, Licheng Peng, Licheng Peng, Huaiyuan Qi, Huaiyuan Qi, Hongliang Li, Haowen Zheng, Kai Chen, Huaiyuan Qi, Licheng Peng, Licheng Peng, Huaiyuan Qi, Licheng Peng, Licheng Peng, Licheng Peng, Licheng Peng, Huaiyuan Qi, Huaiyuan Qi, Huaiyuan Qi, Lirong Wang, Kai Chen, Xiangliang Meng, Jingjing Zhang, Huaiyuan Qi, Huaiyuan Qi, Huaiyuan Qi, Huaiyuan Qi, Xiangliang Meng, Licheng Peng, Minggang Cai, Huaiyuan Qi, Huaiyuan Qi, Licheng Peng, Minggang Cai, Minggang Cai Minggang Cai Minggang Cai Minggang Cai Minggang Cai, Hongliang Li, Minggang Cai Haowen Zheng, Licheng Peng, Licheng Peng, Kai Chen, Huaiyuan Qi, Huaiyuan Qi, Minggang Cai Minggang Cai, Minggang Cai, Kai Chen, Kai Chen, Minggang Cai, Kai Chen, Kai Chen, Kai Chen, Haowen Zheng, Haowen Zheng, Weimin Wang, Licheng Peng, Minggang Cai Licheng Peng, Minggang Cai Licheng Peng, Licheng Peng, Licheng Peng, Minggang Cai, Minggang Cai, Minggang Cai Licheng Peng, Licheng Peng, Licheng Peng, Haifeng Zhang, Weimin Wang, Licheng Peng, Licheng Peng, Minggang Cai Licheng Peng, Licheng Peng, Licheng Peng, Minggang Cai, Lirong Wang, Minggang Cai Kai Chen, Licheng Peng, Xiangliang Meng, Licheng Peng, Licheng Peng, Weimin Wang, Xiangliang Meng, Haowen Zheng, Licheng Peng, Licheng Peng, Minggang Cai Kai Chen, Licheng Peng, Minggang Cai, Kai Chen, Licheng Peng, Minggang Cai Haowen Zheng, Jingjing Zhang, Minggang Cai Minggang Cai, Minggang Cai, Minggang Cai, Weimin Wang, Licheng Peng, Minggang Cai Licheng Peng, Licheng Peng, Licheng Peng, Haowen Zheng, Haifeng Zhang, Minggang Cai Minggang Cai, Licheng Peng, Minggang Cai, Minggang Cai

Summary

Surface sediments from 26 sites in the deep basin of the Eastern Indian Ocean were analyzed for microplastics, finding concentrations ranging widely and influenced by water depth, distance from land, and ocean current patterns. The study extends deep-sea microplastic monitoring to the Indian Ocean and identifies oceanographic transport as a key control on plastic distribution.

Study Type Environmental

Although microplastics (MPs) are known to be found in global oceans, their influencing factors and abundance in the deep sea remain largely unknown. Twenty-six surface sediment samples were collected in the deep basin of the Eastern Indian Ocean (EIO). This study showed that MPs abundance ranged from 30.30 particles/kg to 701.7 particles/kg, with an average of 170.5 ± 140.2 particles/kg. The MPs found in the sediment of the EIO mainly contain fragments and fibers, which account for 47.5% and 45.6%. The MPs were measured in a size range of 44-5000 μm, and the most frequently detected MPs in size of 200-500 μm. MPs were in various compositions, but most of them were found in rayon (62.2%) and polyester (25.7%). The spatial distribution of MPs in the sediments shows a decreasing trend from nearshore to the open sea. In the Bay of Bengal (BOB) and the coast of Sri Lanka (COSL), the abundance of MPs was relatively high, indicating that the spatial distribution of MPs is affected by land source input, river input, and anthropogenic activities. Principal component analysis indicated daily commodities and packaging applications/fishing accounted for 36.9% and 12.9% of the MPs occurrence in the EIO, respectively. Average MPs diversity indices for the BOB (0.87 ± 0.38), the COSL (0.64 ± 0.56), and the Eastern Indian Ocean Basin (EIOB) (0.60 ± 0.24) revealed the BOB had the most complicated MPs sources. In addition, we found that the abundance of MPs has no significant effect on organic carbon and sediment grain size. This study is the first report of MPs detection in the deep-sea sediment in the EIO and can provide a baseline of MPs pollution in this area.

Read via DOI PubMed

Share this paper

Post Share Share Pin Email