Comparisons of industrial emission signatures recorded by spheroidal carbonaceous particles and fossil fuel soot from maar lake sediments in Northeastern and Southeastern China

Key Points

• Spheroidal carbonaceous particles indicate significant industrial emissions present in maar lake sediments.
• The analysis shows a clear differentiation in pollution signatures from Northeastern and Southeastern China.
• Analysis of sediment samples reveals varied fossil fuel soot composition across regions, linking to industrial activity.
• Findings support the need for targeted pollution reduction strategies, particularly in industrial regions.