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Appendix 1: Screening studies of POPs in bottom sediments from the Paz watercourse Table 1.8 Analytical methods in determ ination of metals Metals Sediment Biota Technique Method of analysis Detection Limit, mg/kg Technique Method of analysis Detection Limit, mg/kg Cd GFAA SW-846 #7131A 0.005 GFAA SW-846 #7131A 0.001 Cu FLAA SW-846 # 7210 1.5 FLAA SW-846 # 7210 0.20 Ni FLAA SW-846 #7520 5.0 GFAA SW-846 #7521 0.01 Pb FLAA SW-846 #7421 8.0 GFAA SW-846 #7420 0.01 Hg CVAA SW-846 #7471A 0.005 CVAA Russian 0.005 Li FLAA SW-846 #7430 4.0 - - - Zn FLAA SW-846 #7950 0.8 FLAA SW-846 #7950 0.10 Rapport APN- 514.3665.01 44