Table 2.
Elementa | >LODb (%) | Mean ± S.D. |
|||||||
---|---|---|---|---|---|---|---|---|---|
CA (n=6) | AZ (n=6) | MN (n=5) | KY (n=6) | FL (n=6) | TX (n=6) | PA (n=5) | NY (n=5) | ||
PM2.5 | 100 | 6.86±2.50 | 9.33±1.96 | 7.92±3.02 | 11.27±2.60 | 5.77±1.21 | 8.68±2.98 | 10.32±2.81 | 8.21±2.50 |
Na | 98 | 427±374 | 405±592 | 5.11±4.86 | 2.78±1.77 | 158±61.2 | 81.6±30.6 | 38.1±21.4 | 53.0±17.2 |
Ca | 100 | 21.9±6.67 | 205±83.3 | 37.0±11.5 | 29.8±5.89 | 46.7±18.8 | 63.4±30.2 | 51.5±26.2 | 56.3±24.5 |
Fe | 100 | 36.9±12.2 | 518±158 | 38.4±7.48 | 46.8±5.96 | 23.3±8.17 | 48.0±19.7 | 172±106 | 63.1±18.0 |
Al | 100 | 25.8±14.5 | 167±103 | 17.5±10.2 | 35.8±15.8 | 29.8±9.95 | 33.5±27.6 | 29.1±15.4 | 21.1±14.5 |
K | 100 | 63.1±15.0 | 326±87.1 | 42.0±15.9 | 50.9±9.14 | 47.1±13.1 | 66.3±21.3 | 77.8±34.6 | 38.5±9.01 |
Mg | 100 | 17.0±9.42 | 29.8±30.4 | 7.01±2.93 | 9.38±3.53 | 37.9±14.5 | 18.9±13.6 | 12.2±7.32 | 10.0±3.28 |
Zn | 100 | 8.97±4.41 | 20.4±6.51 | 7.91±1.89 | 6.90±0.82 | 3.14±1.47 | 11.1±4.97 | 66.2±53.2 | 44.9±30.9 |
Ti | 96 | 2.16±0.96 | 81.7±65.6 | 4.12±6.25 | 3.20±1.00 | 5.88±6.97 | 7.79±13.8 | 2.99±1.42 | 2.44±0.58 |
Mn | 100 | 0.82±0.29 | 13.4±4.06 | 1.10±0.22 | 2.50±2.18 | 0.39±0.19 | 1.64±0.63 | 10.7±7.28 | 2.61±1.35 |
Cu | 100 | 1.72±0.33 | 8.36±2.20 | 1.50±0.24 | 1.92±0.54 | 0.57±0.19 | 3.01±1.49 | 4.98±2.66 | 5.14±1.37 |
Pb | 100 | 1.23±0.45 | 2.15±0.74 | 9.85±5.01 | 2.21±0.56 | 0.88±0.42 | 1.72±0.57 | 12.1±6.73 | 3.09±1.08 |
Ni | 76 | 0.05±0.05 | 10.5±4.65 | 0.13±0.12 | 0.03±0.01 | 0.30±0.08 | 1.30±0.82 | 0.53±0.36 | 8.13±4.39 |
V | 100 | 0.17±0.09 | 2.36±0.74 | 0.14±0.07 | 0.23±0.05 | 1.22±0.24 | 4.21±1.36 | 0.30±0.14 | 2.12±1.08 |
Cr | 98 | 0.15±0.09 | 3.37±1.08 | 0.55±0.41 | 1.15±0.97 | 0.25±0.07 | 0.86±0.51 | 1.95±1.08 | 0.37±0.14 |
Sb | 96 | 0.49±0.12 | 1.30±0.95 | 0.61±0.12 | 0.77±0.23 | 0.16±0.06 | 0.51±0.20 | 1.67±0.79 | 3.75±1.38 |
Mo | 87 | 0.18±0.06 | 1.00±0.35 | 0.18±0.07 | 0.25±0.11 | 0.11±0.07 | 0.88±0.40 | 1.91±1.20 | 1.69±1.00 |
Sn | 98 | 0.95±0.41 | 1.00±0.36 | 0.70±0.26 | 0.51±0.12 | 0.14±0.06 | 0.79±0.74 | 1.51±0.74 | 0.89±0.22 |
Se | 82 | 0.02±0.01 | 0.16±0.05 | 0.29±0.10 | 3.92±4.19 | 0.42±0.08 | 0.55±0.24 | 2.81±1.10 | 0.55±0.28 |
As | 100 | 0.66±0.27 | 0.42±0.15 | 1.24±0.73 | 1.21±0.41 | 0.39±0.18 | 1.39±0.90 | 1.59±0.71 | 0.43±0.07 |
Co | 42 | 0.02±0.01 | 0.54±0.15 | 0.02±0.01 | 0.02±0.01 | 0.02±0.01 | 0.04±0.02 | 0.05±0.02 | 0.62±0.32 |
Cd | 76 | 0.05±0.02 | 0.05±0.03 | 0.13±0.05 | 0.01±0.01 | 0.05±0.03 | 0.09±0.03 | 0.49±0.29 | 0.08±0.03 |
Ag | 0 | 0.21±0.04 | 0.20±0.05 | 0.23±0.06 | 0.23±0.07 | 0.21±0.04 | 0.22±0.07 | 0.20±0.03 | 0.22±0.06 |
Cs | 22 | 0.02±0.01 | 0.18±0.06 | 0.02±0.01 | 0.01±0.01 | 0.02±0.01 | 0.02±0.01 | 0.07±0.05 | 0.02±0.01 |
Tl | 8.9 | 0.02±0.01 | 0.02±0.01 | 0.02±0.01 | 0.03±0.02 | 0.02±0.01 | 0.02±0.01 | 0.07±0.05 | 0.02±0.01 |
Be | 0 | 0.02±0.01 | 0.02±0.01 | 0.02±0.01 | 0.02±0.01 | 0.02±0.01 | 0.02±0.01 | 0.02±0.01 | 0.02±0.01 |
CA: Sacramento County, CA; AZ: Maricopa County, AZ; MN: Anoka County, MN; KY: Jefferson County, KY; FL: Pinellas County, FL; TX: Harris County, TX; PA: Allegheny County, PA; NY: Queens County, NY.
Unit : μg/m3 for PM2.5 and ng/m3 for 25 metals.
LOD: Limit of detection