Water quality analysis and source apportionment in estuaries along the coast of the Bohai Sea, North China

Guanghong WU; Dan YE; Wei LUO

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Water quality analysis and source apportionment in estuaries along the coast of the Bohai Sea, North China

Chemistry | Updated：2025-02-19

- Water quality analysis and source apportionment in estuaries along the coast of the Bohai Sea, North China
- Water quality analysis and source apportionment in estuaries along the coast of the Bohai Sea, North China
- 海洋湖沼学报(英文) 2025年43卷第1期页码：73-89
- Affiliations：
  
  1.Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China
  2.Laboratory of Solid Waste Treatment and Recycling, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Author bio：
  
  wuguanghong@hotmail.com
- Funds：
  
  the National Natural Science Foundation of China(41571479)
- DOI：
  中图分类号：
- 收稿：2023-08-20，
  
  纸质出版：2025-01-01
- Accepted：
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Water quality analysis and source apportionment in estuaries along the coast of the Bohai Sea, North China[J]. 海洋湖沼学报(英文), 2025,43(1):73-89.

WU Guanghong,YE Dan,LUO Wei.Water quality analysis and source apportionment in estuaries along the coast of the Bohai Sea, North China[J].Journal of Oceanology and Limnology,2025,43(01):73-89.
Water quality analysis and source apportionment in estuaries along the coast of the Bohai Sea, North China[J]. 海洋湖沼学报(英文), 2025,43(1):73-89. DOI：

WU Guanghong,YE Dan,LUO Wei.Water quality analysis and source apportionment in estuaries along the coast of the Bohai Sea, North China[J].Journal of Oceanology and Limnology,2025,43(01):73-89. DOI：

摘要

Abstract

High-dimensional data (a dataset with many features) were collected from 64 sampling sites to analyze the water quality in estuaries along the coast of the Bohai Sea

North China. The twenty-five water quality parameters analyzed were collected monthly from January 2021 to December 2021. Multivariate statistical techniques

such as the absolute principal component score-multiple linear regression model (APCS-MLR)

correlation analysis

and analysis of variance were used to identify and quantify the potential so

urces or factors affecting water quality and to analyze the spatial‍‍‍-‍temporal variation in water quality. The water quality indices (WQIs)

ranging from 67.96 to 70.67

showed that the water quality was at an intermediate level in the estuaries during both the flood and nonflood seasons. The concentrations of total phosphorus (TP)

ammonia N (AN)

and organic pollutants were greater in the Haihe River Basin than in the Liaohe River and Huanghe-Huaihe River Basins. The concentration of total nitrogen (TN) in the Haihe River Basin was lower than that in the Liaohe River and Huanghe-Huaihe River Basins. Heavy metal concentrations in the Liaohe River Basin were greater than those in the Haihe River and Huanghe-Huaihe River Basins. The annual mean concentrations of AN in the estuaries of the Haihe

Liaohe

and Huanghe (Yellow) rivers exhibited significant decreasing trends from 2013 to 2022

but no significant decreasing trends were found for permanganate index (COD

) or the TP. The concentrations of TN and AN were lower in the flood season than in the nonflood season

and the TP concentration was greater in the flood season than in the nonflood season. However

the concentrations of organic pollutants did not exhibit significant differences. Domestic sewage and industrial wastewater

substance exchange between air and water

nonpoint sources from rural and urban areas

and aquaculture wastewater were the major sources or factors responsible for water pollution in the estuaries.

关键词

Keywords

references

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