Table 4: Calibration solutions [CS] of DL-PCBs (ng/ml).

Analyte

Calibration levels

Native standard

CS1

CS2

CS3

CS4

CS5

CS6

CS7

CS8

PCB 77

0.2

0.5

1

2

5

10

20

50

PCB 81

0.2

0.5

1

2

5

10

20

50

PCB 105

0.2

0.5

1

2

5

10

20

50

PCB 114

0.2

0.5

1

2

5

10

20

50

PCB 118

0.2

0.5

1

2

5

10

20

50

PCB 123

0.2

0.5

1

2

5

10

20

50

PCB 126

0.2

0.5

1

2

5

10

20

50

PCB 156

0.2

0.5

1

2

5

10

20

50

PCB 157

0.2

0.5

1

2

5

10

20

50

PCB 167

0.2

0.5

1

2

5

10

20

50

PCB 169

0.2

0.5

1

2

5

10

20

50

PCB 189

0.2

0.5

1

2

5

10

20

50

Internal Standard

13C12 - PCB 77

1

1

1

1

1

1

1

1

13C12 - PCB 81

1

1

1

1

1

1

1

1

13C12 - PCB 105

1

1

1

1

1

1

1

1

13C12 - PCB 114

1

1

1

1

1

1

1

1

13C12 - PCB 118

1

1

1

1

1

1

1

1

13C12 - PCB 123

1

1

1

1

1

1

1

1

13C12 - PCB 126

1

1

1

1

1

1

1

1

13C12 - PCB 156

1

1

1

1

1

1

1

1

13C12 - PCB 157

1

1

1

1

1

1

1

1

13C12 - PCB 167

1

1

1

1

1

1

1

1

13C12 - PCB 169

1

1

1

1

1

1

1

1

13C12 - PCB 189

1

1

1

1

1

1

1

1