Table 6. Summary
Statistics for Trace Elements in Aerosol Samples
Collected at Near Field during May-July 1998
|
|
Aerosol Particle Diameter Classes
|
|
|
aTSP
|
b,gPM10
|
cPM2.5
|
Element
|
Units
|
dN
|
eMean
|
fSE
|
N
|
Mean
|
SE
|
N
|
Mean
|
SE
|
| Al |
µg m-3
|
6
|
4.8E-1 |
6.4E-2 |
7
|
2.0E+0 |
1.5E+0 |
5
|
1.4E-1 |
3.3E-2 |
| As |
µg m-3
|
3
|
9.0E-4 |
1.3E-4 |
2
|
1.4E-3 |
2.5E-4 |
3
|
1.2E-3 |
2.8E-4 |
| Ba |
µg m-3
|
6
|
5.7E-3 |
7.5E-4 |
7
|
1.2E-2 |
7.5E-3 |
6
|
2.0E-3 |
5.4E-4 |
| Be |
µg m-3
|
1
|
2.8E-1 |
|
0
|
|
|
0
|
|
|
| Ca |
µg m-3
|
6
|
6.4E-1 |
8.6E-2 |
7
|
1.8E+0 |
1.2E+0 |
4
|
1.8E-1 |
3.6E-2 |
| Cd |
µg m-3
|
0
|
|
|
0
|
|
|
1
|
2.2E-4 |
|
| Co |
µg m-3
|
3
|
8.2E-4 |
1.1E-4 |
3
|
8.4E-4 |
6.9E-5 |
1
|
3.3E-4 |
|
| Cr |
µg m-3
|
6
|
4.2E-3 |
1.1E-3 |
6
|
9.4E-3 |
3.1E-3 |
6
|
6.6E-3 |
1.9E-3 |
| Cu |
µg m-3
|
4
|
2.0E-3 |
3.6E-4 |
4
|
5.4E-3 |
3.3E-3 |
2
|
1.8E-3 |
4.0E-4 |
| Fe |
µg m-3
|
6
|
2.7E-1 |
3.9E-2 |
7
|
9.4E-1 |
6.8E-1 |
6
|
8.5E-2 |
1.5E-2 |
| K |
µg m-3
|
6
|
2.7E-1 |
6.5E-2 |
7
|
1.1E+0 |
7.6E-1 |
4
|
2.3E-1 |
3.1E-2 |
| Mg |
µg m-3
|
6
|
1.4E-1 |
1.9E-2 |
7
|
5.2E-1 |
3.8E-1 |
6
|
4.0E-2 |
6.1E-3 |
| Mn |
µg m-3
|
6
|
5.2E-3 |
9.1E-4 |
7
|
5.3E-3 |
1.1E-3 |
5
|
2.1E-3 |
7.3E-4 |
| Mo |
µg m-3
|
1
|
1.5E-3 |
|
2
|
2.1E-3 |
3.0E-4 |
1
|
2.4E-3 |
|
| Na |
µg m-3
|
5
|
2.8E-1 |
6.2E-2 |
6
|
1.2E+0 |
1.0E+0 |
3
|
2.5E-1 |
8.9E-2 |
| Ni |
µg m-3
|
3
|
9.6E-3 |
5.9E-3 |
3
|
1.7E-2 |
1.0E-2 |
2
|
1.6E-2 |
1.2E-2 |
| Pb |
µg m-3
|
3
|
2.0E-3 |
1.5E-4 |
5
|
2.4E-3 |
3.5E-4 |
4
|
2.7E-3 |
2.9E-4 |
| Sb |
µg m-3
|
1
|
6.8E-4 |
|
2
|
1.2E-3 |
1.5E-4 |
1
|
1.7E-2 |
|
| Se |
µg m-3
|
0
|
|
|
1
|
9.4E-4 |
|
0
|
|
|
| Sr |
µg m-3
|
6
|
2.8E-3 |
3.7E-4 |
7
|
1.0E-2 |
7.2E-3 |
5
|
7.7E-4 |
1.7E-4 |
| V |
µg m-3
|
6
|
1.2E-3 |
1.6E-4 |
7
|
1.4E-3 |
1.5E-4 |
5
|
7.7E-4 |
1.4E-4 |
| Zn |
µg m-3
|
2
|
1.9E-1 |
1.8E-1 |
5
|
2.8E-2 |
1.4E-2 |
1
|
5.2E-2 |
|
aTSP = total suspended particulate matter aerosols
with aerodynamic diameter <75 µm
bPM10 = suspended particulate matter
aerosols with aerodynamic diameter <10 µm
cPM2.5 = suspended particulate
matter aerosols with aerodynamic diameter <2.5 µm
dN = number of samples above detection limit
that were included in calculations
eMean = arithmetic mean
fSE = standard error
gOne sample with apparent contamination was
excluded for the calculation of summary statistics
|
|
