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Assessment of watershed chemical integrity for phenolic pollutants using structural equation modeling
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Xu-sheng WANG1, 2, Xiao-nan WANG1, *, Zheng-tao LIU1, 2, *
China Environmental Science | 2026, 46(2) : 963 - 971
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China Environmental Science | 2026, 46(2): 963-971
• Environmental Ecology •
Assessment of watershed chemical integrity for phenolic pollutants using structural equation modeling
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Xu-sheng WANG1, 2, Xiao-nan WANG1, *, Zheng-tao LIU1, 2, *
Affiliations
  • 1.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
  • 2.College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
Published: 2026-02-20
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This study analyzed physicochemical parameters and phenolic pollutant concentrations from 168 water samples collected at 84 surface water sampling sites in the Yangtze River Basin. A structural equation modeling (SEM) framework was constructed to quantify the direct and indirect pathways through which phenolic pollutants impact chemical integrity. The methodology involved the integration of conventional water quality parameters, phenolic compounds, and heavy metal data, with a chemical pressure index being constructed using principal component analysis (PCA). The mediating effects of environmental regulatory factors were analyzed via partial least squares SEM. It was found that phenolic pollution significantly impaired chemical integrity through direct toxic effects (path coefficient β = -0.55) and indirect pathways mediated by environmental controls (β = -0.14), with notable synergistic effects being exhibited by heavy metals. A formula for the Chemical Integrity Index (ICI) was proposed, providing a quantitative tool for watershed pollution management and control.

Phenolic compounds  /  Yangtze River Basin  /  chemical integrity  /  environmental concentration  /  risk assessment
王旭升, 王晓南, 刘征涛. 基于结构方程模型的酚类流域化学完整性评估. 中国环境科学, 2026 , 46 (2) : 963 -971 .
Xu-sheng WANG, Xiao-nan WANG, Zheng-tao LIU. Assessment of watershed chemical integrity for phenolic pollutants using structural equation modeling[J]. China Environmental Science, 2026 , 46 (2) : 963 -971 .
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Year 2026 volume 46 Issue 2
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Article Info
  • Receive Date：2025-06-04
  • Online Date：2026-10-08
  • Published：2026-02-20
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  • Received：2025-06-04
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Affiliations
    1.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
    2.College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
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表12种不同金属材料的力学参数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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