Page:NIOSH Manual of Analytical Methods - Chapter Q.pdf/11

 TABLE 1. RESULTS FOR SIX SETS OF AIR SAMPLES COLLECTED IN TWO OUTDOOR LOCATIONS. SEE TEXT FOR DETAILS. TC, µg/cm 2 Set

Location

QQ1

TQQ1

Bottom quartz mean

mean, SD

RSD %

mean, SD

RSD %

QQ2

TQQ2

pooled, SD

RSD %

Adsorbed fraction (%)

1

shelter

4.81, 0.47

9.77

3.66, 0.43

11.75

3.46

3.41

3.44, 0.30

8.80

76

2

dock

3.52, 0.25

7.10

2.82, 0.36

12.77

2.48

2.33

2.43, 0.23

9.57

80

3

dock

3.61, 0.05

1.39

2.89, 0.04

1.38

2.41

2.42

2.41, 0.18

7.45

80

4

dock

4.59, 0.18

3.92

1.79, 0.24

13.40

1.41

1.36

1.38, 0.09

6.46

30

5

dock

8.43, 0.33

3.91

1.84, 0.35

19.02

1.35

1.36

1.35, 0.16

12.03

22

6

dock

22.78, 0.35

1.54

3.62, 0.18

4.97

3.10

3.18

3.14, 0.13

4.09

16

239