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Global Oxidative Potential Emissions from Industrial Particulate Matter.

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Industrial particulate matter (PM) has significant oxidative potential (OP), impacting health. Cement kilns are major sources of OP emissions, necessitating integration into sustainability policies for public health.

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Area of Science:

  • Environmental Science
  • Toxicology
  • Public Health

Background:

  • Oxidative potential (OP) of particulate matter (PM) is a key health indicator.
  • Industrial sources significantly contribute to PM OP and associated health risks.
  • Understanding OP from industrial emissions is vital for risk assessment.

Purpose of the Study:

  • To analyze the mass-normalized OP (OPmDTT) of fine PM from 13 major industrial processes.
  • To quantify global industrial OP emissions.
  • To assess population exposure risks to OP.

Main Methods:

  • Analysis of OPmDTT for fine PM from 13 industrial sources.
  • Quantification of annual OP emissions from global industrial activities.
  • Calculation of population exposure to volume-normalized OP (OPvDTT) in China.

Main Results:

  • Iron ore sintering showed high average OPmDTT (0.93 nmol DTT/min/μg).
  • Global industrial OP emissions exceed 2.44 × 10^9 mol DTT/min/yr, with cement kiln co-processing as the primary source.
  • Significant OP emissions also arise from iron ore sintering, coking plants, and steelmaking.

Conclusions:

  • Industrial activities, especially cement kilns, are major contributors to OP emissions.
  • Urgent need to incorporate OP metrics into industrial and waste management policies.
  • Balancing economic development with public health requires addressing industrial OP.