A Simple Approach for Measuring Emission Patterns of Vapor Phase Mercury under Temperature-Controlled Conditions from Soil
Table 2
Summary of experiments using three soil samples with a total weight of 50 ga.
(a) Hg concentration exiting the chamber (ng m−3)
Temp
C(S1)b
C(S2)
C(S3-1)
C(S3-2)
C(S3-3)
25
7.065
3.046
6.568
NM
NM
30
10.412
2.607
4.206
DL
DL
40
21.194
6.159
3.941
DL
DL
50
32.524
4.160
1.822
DL
DL
60
13.024
6.565
1.386
0.064
1.025
70
NM
4.217
0.883
0.372
3.745
(b) Hg emission flux (ng m−2 h−1)
Temp
F(S1)
F(S2)
F(S3-1)
F(S3-2)
F(S3-3)
25
70.2
30.3
65.3
30
103.5
25.9
41.8
40
210.6
61.2
39.2
50
323.2
41.3
18.1
60
129.4
65.2
13.8
0.6
10.2
70
41.9
8.8
3.7
37.2
(c) Relationship between 1/ versus ln(emission flux)
(abs)
ln(F(S1))
ln(F(S2))
ln(F(S3-1))
ln(F(S3-2))
ln(F(S3-3))
0.0034
4.2514
3.4100
4.1785
0.0033
4.6392
3.2546
3.7329
0.0032
5.3500
4.1142
3.6677
0.0031
5.7782
3.7219
2.8961
0.0030
4.8630
4.1780
2.6226
−0.4466
2.3207
0.0029
3.7354
2.1721
1.3071
3.6167
aThree soil samples are named as S1, S2, and S3, and the number of repetition is given after the hyphen.
bInitiation dates for each experiment: S1 (22 December 2009), S2 (30 December 2009), S3-1 (26 January 2010), S3-2 (2 February 2010), and S3-3 (11 February 2010).
