Skip to main content
. Author manuscript; available in PMC: 2013 Sep 27.
Published in final edited form as: Int J Environ Health Res. 2011 Apr;21(2):106–119. doi: 10.1080/09603123.2010.515668

Table 1.

Average concentrations for PM2.5 (standard deviation (±); n = 6) and metal (indoor: n = 3; outdoor: n = 1) at chemical laboratories.

Site PM2.5 (μg/m3) Al (μg/m3) As (ng/m3) Cd (ng/m3) Fe (μg/m3) Pb (ng/m3) Ni (ng/m3) V (ng/m3)
Laboratory 1 8.5 (±3.9) 0.62 (±0.2) 1.4 (±0.4) 0.23 (±0.01) 0.54 (±0.1) 15.0 (±5.9) 10.0 (±5.1) 1.9 (±0.7)
Laboratory 2 6.5 (±2.5) 0.13 (±0.1) 0.7 (±0.3) 0.02 (±0.01) 0.12 (±0.03) 1.0 (±0.5) 1.0 (±0.5) 0.5 (±0.3)
Laboratory 3 3.0 (±0.9) 0.24 (±0.01) 0.95 (±0.05) 0.01 (±0.001) 0.23 (±0.1) 1.7 (±0.5) 4.70 (±0.8) 0.3 (±0.1)
Outdoor 9.4 (±6.1) 0.21 1.7 0.2 0.8 3.0 1.0 0.8