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Screening uncalibrated priority pollutants by improved AHP-CRITIC method at development land.

Xinni Wei1, Xiuli Dang2, Peng Liu2

  • 1College of Land and Environment, National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, Northeast Key Laboratory of Conservation and Improvement of Cultivated Land, Ministry of Agriculture and Rural Affairs, Shenyang Agricultural University, Shenyang 110866, China; Center for Environmental Health Risk Assessment and Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.

Environment International
|June 29, 2025
PubMed
Summary

Unlisted industrial pollutants in Northeast China pose ecological and health risks. This study identifies 11 priority pollutants, including perfluorooctanoic acid (PFOA), for urgent control and remediation efforts.

Keywords:
Indicator systemNortheast ChinaPriority pollutantsScreening methodUncalibrated pollutants

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Area of Science:

  • Environmental Chemistry
  • Risk Assessment
  • Industrial Ecology

Background:

  • Industrial land in Northeast China accumulates unlisted, uncalibrated pollutants due to inadequate regulation.
  • These accumulating pollutants present significant threats to the regional ecological environment and human health.

Purpose of the Study:

  • To identify and prioritize unlisted, uncalibrated pollutants in Northeast China's industrial land for control and remediation.
  • To develop a robust methodology for screening and ranking environmental contaminants based on local conditions.

Main Methods:

  • Screened 170 candidate pollutants using literature review.
  • Employed Analytical Hierarchy Process (AHP) and Criteria Importance Through Intercriteria Correlation (CRITIC) for pollutant screening.
  • Modified toxicity, persistence, and migration indicators considering regional industrial and environmental factors.

Main Results:

  • Identified 11 priority uncalibrated pollutants using comprehensive evaluation and cluster analysis.
  • Perfluorooctanoic acid (PFOA) ranked highest, followed by acrolein, perfluorooctane sulfonate (PFOS), and styrene.
  • Perfluorooctanoic acid (PFOA) poses the most significant long-term hazard, scoring 382 points.

Conclusions:

  • Prioritizing control of identified pollutants, especially PFOA, is crucial for environmental protection in Northeast China.
  • The study provides a framework for managing and remediating unlisted chemical contaminants in industrial areas.
  • Effective chemical management strategies are essential to mitigate ecological and health risks from industrial pollution.