Table 5.54
Toxicity values of focus pollutants in the site
No. Pollutants
Oral slope factor
Inhalation unit risk
Oral reference dose
Inhalation reference
concentration
EPA toxicity
classification
SF
o
IUR
RfD
o
RfC
1/(mg/kg/d) References 1/(mg/m
3
) References mg/kg/d
1/(mg/kg/d) References 1/(mg/m
3
) References mg/kg/d
1
Ammonia
–
–
–
–
–
–
1.00E−01
EPA-I
NA
–
2
Chromium
5.00E−01
R369
8.40E+01 R369
3.00E−03 EPA-I
1.00E−04
EPA-I
A
EPA-I
3
Nickel
–
–
2.60E−01 R369
2.00E−02 EPA-I
9.00E−05
R369
A
EPA-I
4
Lead
–
–
–
–
–
–
–
–
–
–
5
Vanadium
–
–
8.30E+00 R369
9.00E−03 EPA-I
7.00E−06
R369
NA
–
6
Mercury (inorganic)
–
–
–
–
3.00E−04 EPA-I
3.00E−04
R369
D
EPA-I
7
Arsenic (inorganic)
1.50E+00
EPA-I
4.30E+00 EPA-I
3.00E−04 EPA-I
1.50E−05
R369
A
EPA-I
8
Benzene
5.50E−02
EPA-I
7.80E−03 EPA-I
4.00E−03 EPA-I
3.00E−02
EPA-I
A
EPA-I
9
Toluene
–
–
–
–
8.00E−02 EPA-I
5.00E+00
EPA-I
D
EPA-I
10
Ethylbenzene
1.10E−02
R369
2.50E−03 R369
1.00E−01 EPA-I
1.00E+00
EPA-I
D
EPA-I
11
O-xylene
–
–
–
–
2.00E−01 R369
1.00E−01
R369
NA
–
12
Meta-xylene
–
–
–
–
2.00E−01 R369
1.00E−01
R369
NA
–
13
Paraxylene
–
–
–
–
2.00E−01 R369
1.00E−01
R369
NA
–
Note
“–” means no reference values available
196
5 Application Cases