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Table 12: Particle-bound PCDD and PCDF

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Sample reference

Process

Concentration (ng I-TEQ per m3)

Percentage particle bound

Particle bound

Gas phase

Total

S13 + S14

Steel induction furnace fabric filter

0.005

0.002

0.007

70

S16 + S17

Iron and steel (mixed) induction furnace (fabric filter not working)

0.012

0.003

0.015

79

S18 + S19

Iron and steel (mixed) induction furnace (fabric filter not working)

7.3

0.6

7.9

92

S28 + S29

Bronze induction furnace (fugitive)

0.00077

0.000029

0.00080

96