Table 2 The top 15 most enriched bacterial genera and their likely sources are shown below.

From: The composition of the bacterial communities collected from the PM10 samples inside the Seoul subway and railway station

Bacterial genus

Possible source

Brevundimonas

Soil, aquatic habitat, deep subsea sediment

Bacillus

Soil, air dust, debris

Lysinibacillus

Soil

Enterobacter

Soil, water, sewage

Pseudomonas

Soil, water, plants

Tissierella

Soil, humans

Cytobacillus

Soil, marine segments, living organisms

Sporosarcina

Soil, animal sources

Paenibacillus

Soil, water, sewage, sediments

Clostridioides

Soil, water, animals

Flavobacterium

Soil, animals, river sediments

Flaviflexus

humans

Schnuerera

Water, soil, sediments

Urmitella

Soil, humans

Acinetobacter

Soil, wetland, riverbed