海南昌化江入海河口区微塑料污染特征及风险评估
Characteristics of microplastics pollution and risk assessment in estuaries of Changhua river,Hainan
王少露 1吴思怡 1雷宇 1冯莹 1谢福武 1何书海1
作者信息
- 1. 海南省生态环境监测中心,海南海口 571126
- 折叠
摘要
为了解海南昌化江入海河口区的微塑料分布特征、污染现状和潜在影响因素,本研究于2022年 11月对昌化江入海河口开展了表层海水微塑料调查.结果表明:昌化江入海河口区表层水体微塑料丰度为 0.10～0.49个/m3,平均值为(0.29±0.11)个/m3,随岸线距离增加,微塑料丰度整体呈现从河口区到近岸海域递减的变化趋势,近岸陆源输送作用明显.塑料成分以聚丙烯(PP)、聚乙烯(PE)为主,占比分别为 36.1%和 25.4%.粒径以 0.5～2.0 mm范围的微塑料为主,占比为 58.6%.形状以片状塑料占主导,占比高达 67.4%.颜色以半透明和白色塑料物质居多,占比为 71.6%.此外,潜在生态风险指数(PERI)评估结果显示,整个研究区域呈无显著生态风险状态,与国内外研究结果相比,微塑料丰度整体处于低污染水平.
Abstract
To research the distributed characteristics,polluted status and potential factors of microplastics in estuaries of Changhua river,Hainan.Survey of microplastics with surface seawater were studied and analyzed in November 2022.Results revealed that microplastics abundance were ranged from 0.10～0.49 particles/m3,with the mean was 0.29±0.11 particles/m3.As the distance from the shore increasing,abundance were generally showed a decreasing trends from estuaries to nearshore areas,obviously affected by terrestrial inputs.Components were mainly dominated by polypropylene(PP),polyethylene(PE),with proportion were 36.1%and 25.4%,respectively.Sizes were mainly composed of microplastics with a diameter ranging from 0.5 to 2.0 mm,which accounted for 58.6%.Shapes were dominated by fragmented microplastics,with proportion were 67.4%.And colors were made up of translucent and white microplastics were in the majority,with proportion were 71.6%.Results also showed that there were not significant ecological risk in estuaries of Changhua river,and microplastics abundance were still at a low pollution levels,when compared with domestic and foreign studies.
关键词
微塑料/污染特征/风险评估/昌化江/入海河口Key words
microplastics/polluted characteristic/risk assessment/Changhua river/estuaries引用本文复制引用
基金项目
海南省自然科学基金青年基金项目(321QN0960)
海南省自然科学基金高层次人才基金项目(420RC755)
出版年
2024
NETL
NSTL
万方数据