Supplementary material to "Assessing the Sources of Submicron Airborne Elements at two sites in the Fos-Marseille Basin through Rolling Positive Matrix Factorization"

Detection Limits for Xact 625i -Cooper Environmental Services Xact 625i Minimum Detection Limits (ng m -3 ) For larger spot size 68%Confidence Level (C1σ) per US EPA IO3.3 and Currie * Element Atomic Number Sampling/Analysis Time (min) (At.No.) 15 30 60 120 180 240 Al (13) 13 1500 500 170 61 33 22 Si (14) 14 260 89 31 11 5.9 Ni (28) 28 1.4 0.47 0.17 0.059 0.032 0.021 Cu (29) 29 1.1 0.39 0.14 0.048 0.026 0.017 Zn (30) 30 0.95 0.33 0.12 0.041 0.022 0.014 Ga (31) 31 0.83 0.29 0.10 0.036 0.019 0.013 Ge (32) 32 0.79 0.28 0.097 0.034 0.019