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Table 1.14 QA/QC DATA REPORT for Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in biota Appendix: Screening studies of POPs in fish from the Paz watercourse Compound Procedu­ ral Blank PBB 01, ng Method Detection Limit, ng/kg Duplicate Difference, %D Spiked Blank Sample SMB 01 Detected, ng Added, ng % Recovery 2,3,7,8-TCDD n.d. 0.30 - 0.03 0.04 77 1,2,3,7,8-PeCDD n.d. 0.20 - 0.18 0.20 89 1,2,3,4,7,8-HxCDD n.d. 0.10 - 0.17 0.20 84 1,2,3,6,7,8- HxCDD n.d. 0.10 - 0.17 0.20 87 1,2,3,7,8,9- HxCDD n.d. 0.10 - 0.19 0.20 96 1,2,3,4,6,7,8-HpCDD n.d. 0.10 - 0.19 0.20 93 OCDD n.d. 0.10 - 0.29 0.40 73 2,3,7,8-TCDF n.d. 0.20 - 0.03 0.04 84 1,2,3,7,8-PeCDF n.d. 0.20 - 0.21 0.20 105 2,3,4,7,8-PeCDF n.d. 0.20 - 0.20 0.20 99 1,2,3,4,7,8-HxCDF n.d. 0.10 - 0.20 0.20 98 1,2,3,6,7,8- HxCDF n.d. 0.10 - 0.16 0.20 79 2,3,4,6,7,8-HxCDF n.d. 0.10 - 0.15 0.20 77 1,2,3,7,8,9-HxCDF n.d. 0.10 - 0.16 0.20 80 1,2,3,4,6,7,8-HpCDF n.d. 0.10 - 0.17 0.20 84 1,2,3,4,7,8,9-HpCDF n.d. 0.10 - 0.18 0.20 90 OCDF n.d. 0.10 - 0.38 0.40 96 Surrogate Internal Standards, % Recovery (13Cn)2,3,7,8-TCDD 79 0.30 - 1.24 1.25 99 (13Cn)2,3,7,8-TCDF 85 0.20 - 1.19 1.25 95 (13Cn ) 1,2,3,7,8-PeCDD 87 0.20 - 1.09 1.25 87 (I3C}2)1,2,3,7,8-PeCDF 96 0.20 - 1.11 1.25 89 (13C12)1,2,3,6,7,8- HxCDD 84 0.10 - 1.20 1.25 96 (13Cn)1,2,3,6,7,8- HxCDF 90 0.10 - 1.18 1.25 94 (13Cn)1,2,3,4,6,7,8-HpCDD 95 0.10 - 1.13 1.25 90 (13Cn )1,2,3,4,6,7,8-HpCDF 96 0.10 - 1.00 1.25 80 (13Cn)OCDD 93 0.10 - 2.13 2.50 85 Akvaplan-niva report APN 514-3365.02 51