Table 1 Percentage and number of particles at different sampling heights.

From: Chemicals and microbes in bioaerosols from reaction tanks of six wastewater treatment plants: survival factors, generation sources, and mechanisms

 

Percentage of coarse particles (2.5 μm–10 μm)

Percentage of fine particles (<2.5 μm)

Average total number (m−3)

0.1 WS

40.54%

59.46%

4891

1.5 WS

33.65%

66.35%

3074

3.0 WS

24.38%

75.62%

2152

  1. (0.1 WS: Sampling point 0.1 m above the water surface; 1.5 WS: Sampling point 1.5 m above the water surface; 3.0 WS: Sampling point 3.0 m above the water surface).
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