中国水产科学2026，Vol.33Issue(3)：69-82,14.DOI:10.12264/JFSC2025-0260
长江口水域水生动物体内微塑料分布特征
Distribution characteristics of microplastics in aquatic organisms in the Yangtze River estuary area
摘要
Abstract
Marine microplastic pollution has spread across major global water bodies,with microplastics now commonly detected in aquatic organisms.Estuaries represent some of the regions most profoundly impacted by human activities.As transitional areas where freshwater and brackish water mix,microplastic contamination levels and distribution patterns in resident organisms can effectively reflect the state of microplastic pollution in aquatic environments across China.This study employed micro-infrared spectroscopy to conduct qualitative and quantitative analyses of microplastics in common aquatic organisms from the Yangtze River Estuary,while also investigating the influence of biological parameters,including body length and body mass,on microplastic abundance.The results revealed a total of 124 microplastic particles across 93 biological samples.The overall detection rate of microplastics in fish gastrointestinal tissue was 58.6%,with the highest rates observed in yellow crucian carp(Setipinna tenuifilis)and knifefish(Coilia nasus)at both 81.8%.Regarding physical characteristics,fibrous microplastics predominated,accounting for 94.2%and 91.7%of microplastics detected in gastrointestinal and muscle tissues,respectively.Colors were predominantly black,colorless,and blue,collectively exceeding 70%.Polymer composition analysis identified nine distinct polymer types,with polyethylene terephthalate(PET)constituting the dominant component(84.7%),followed by polyethylene(PE)(7.3%).Furthermore,significant interspecific variations were observed in microplastic contamination characteristics.This study represents the first systematic investigation of microplastic contamination in aquatic organisms inhabiting the Yangtze River Estuary.It also provides a systematic assessment of factors influencing microplastic abundance,offering foundational data and reference points for related studies in other Chinese water bodies and investigations of microplastic accumulation mechanisms.关键词
微塑料/长江口/显微红外光谱/污染现状/影响因素/水生动物Key words
microplastics/the Yangtze River estuary/microscopic infrared spectroscopy/contamination status/influence factor/aquatic animal分类
农业科技引用本文复制引用
彭建钧,高春霞,童剑锋..长江口水域水生动物体内微塑料分布特征[J].中国水产科学,2026,33(3):69-82,14.基金项目
上海市农委科技兴农技术创新项目(沪农科创字2022第2-1号). （沪农科创字2022第2-1号）
