Global Oxidative Potential Emissions from Industrial Particulate Matter.

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.