Concentration of 2,3,7,8 TCDF (ppb)

Intra-day Mean + SD (mv*S)

Precision (RSD %)

Inter-day Mean + SD (mv*S)

Precision (RSD %)

0.75

1998.41 ± 351.34

7.52

2022.31 ± 361.23

7.45

1.25

4223.42 ± 432.48

7.30

4315.92 ± 441.21

7.30

2.5

8512.91 ± 571.96

6.33

8639.92 ± 481.83

4.79

5

17,812.25 ± 851.08

4.02

18,902.23 ± 764.32

4.30

10

37,510.12 ± 976.51

3.60

38,096 ± 832.12

2.39