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Table 2 Composition and characteristics for personal, workday PM2.5 measurements (n = 31)

From: PM2.5 metal exposures and nocturnal heart rate variability: a panel study of boilermaker construction workers

  

Exposure (μg/m3)

PM2.5 Component

Below

LOD

Mean

Median

Q25 – Q75

Total

0

799.0

649.8

337.0 – 1052.2

Al

0

5.07

4.58

2.67 – 6.28

Cr

1

0.19

0.16

0.08 – 0.24

Cu

0

3.16

1.86

0.79 – 4.67

Fe

0

319.3

225.6

132.2 – 453.0

Mn

0

27.33

27.22

10.23 – 38.62

Ni

12

0.11

0.04

0.003 – 0.15

Pb

1

0.16

0.14

0.08 – 0.22

Zn

0

2.31

0.98

0.37 – 4.50