Hg Fluorescence when diluting with Air vs. diluting with Nitrogen
Mercury Fluorescence, Pressure Dependence                                                                                                                                                                                 
for Samples at constant Mixing Ratio
0
1
2
3
4
5
6
7
8
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Sample Chamber Pressure, atmospheres absolute
Relative Fluorescence Intensity
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
Relative Background Signal
Mercury in Nitrogen
Mercury in Air
Raleigh scattering
CEMS MDL = 0.008 microgram/m3
CEMS MDL = 0.040 microgram/m3