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Persistent organic pollutants in China's surface water systems.

Dongmei Han1, Matthew J Currell2

  • 1Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.

The Science of the Total Environment
|December 18, 2016
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Summary

China

Keywords:
ChinaOrganochlorine pesticides (OCPs)Persistent organic pollutantsPolychlorinated biphenyls (PCBs)Polycyclic aromatic hydrocarbons (PAHs)Surface water system

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Area of Science:

  • Environmental Chemistry
  • Water Quality Assessment
  • Pollutant Distribution Dynamics

Background:

  • China's rapid industrialization has led to significant chemical production and consumption.
  • Variable regulatory oversight exacerbates risks associated with chemical storage, use, and waste management.
  • Persistent Organic Pollutants (POPs) pose a growing environmental concern in Chinese waters.

Purpose of the Study:

  • To synthesize data on the distribution of selected POPs in Chinese waters.
  • To identify key areas of POPs contamination.
  • To evaluate pollution levels and compare them globally.

Main Methods:

  • Literature review and data synthesis on POPs distribution.
  • Analysis of Polycyclic Aromatic Hydrocarbons (PAHs), Organochlorine Pesticides (OCPs), and Polychlorinated Biphenyls (PCBs) concentrations.
  • Comparison of Chinese water pollution data with international benchmarks.

Main Results:

  • High concentrations of PAHs, OCPs, and PCBs found in southeast coastal waters, including the Yangtze River Estuary and Pearl River Delta.
  • Pollution levels frequently exceed international and Chinese guideline values.
  • PAHs and PCBs pollution in China is particularly severe compared to global levels.

Conclusions:

  • Urgent improvement needed in water quality guidelines, pollution control, and cleanup strategies for POPs in China.
  • Regulatory gaps and major sources of POPs require addressing.
  • Potential long-term health and ecological effects necessitate immediate action.