黎安港水体砷含量分布特征和污染评价
Distribution Characteristics and Pollution Evaluation of Arsenic in the Surface Seawater of Li'an Lagoon
谢庆安 1公维洁 1宋堃瑜 1王春珠 1梁佰靖 1张贝妮 1仇鹤潼1
作者信息
- 1. 海南热带海洋学院海洋科学技术学院,海南三亚 572022
- 折叠
摘要
为了全面了解黎安港水体砷的污染情况,对黎安港上覆水进行了取样分析.结果表明:黎安港表层水体三价砷的浓度范围为0.112～0.685 μg/L,五价砷浓度范围为0.563～1.218 μg/L,总砷浓度范围为1.041～1.515 μg/L,砷污染以五价砷为主,近岸点位砷浓度整体高于中央水体中砷浓度.对各价态砷与理化参数进行相关性分析,利用单因子污染指数法对As元素无机化合物进行污染评价,并利用Hakanson指数法对各站点的总As浓度进行重金属潜在生态风险评估,得出黎安港水体中重金属砷污染水平为自然本底,潜在生态危害等级为轻微生态危害,黎安港水体水质中砷浓度符合国家海水水质一类的标准.
Abstract
In order to understand the arsenic pollution of Li'an lagoon,the arsenic content of the surface seawater of the lagoon was monitored.The results showed that the content of arsenic(Ⅲ)ranged from 0.112 to 0.685 μg/L,arsenic(V)0.563～1.218 μg/L,total arsenic1.041～1.515 μg/L,which was spatially described as the highest value in the near shore and the lowest value in the middle of the lagoon.Arsenic pollution was mainly caused by arsenic(V).The degree of arsenic pollution and potential ecological risks were evaluated by Single factor pollution index method,Hakanson potential ecological risk index method,and correlation analysis method.The pollution evaluation results showed that the arsenic was basically a slightly enriched,slightly ecologically harmful degree,and the potential harm was small.The arsenic concentration in the water quality of Li'an lagoon meets the first-class benchmark of China's national marine water quality criteria.
关键词
黎安港/砷/空间分布/污染评价Key words
Li'an lagoon/arsenic/spatial distribution/pollution assessment引用本文复制引用
基金项目
大学生志愿者暑期文化科技卫生"三下乡"社会实践活动项目(2023)()
出版年
2024
NETL
NSTL
万方数据