Research Article
Sequential Extractions and Toxicity Potential of Trace Metals Absorbed into Airborne Particles in an Urban Atmosphere of Southwestern Nigeria
Table 4
The results of analysis of certified and found results for BCR 701 (µgg−1).
| µgg−1 | Pb | Cr | Cu | Zn | Ni | Cd | Mn |
| Step | | | | | | | | Certified | 166.9 ± 8.22 | 87.26 ± 28.4 | 39.6 ± 3.22 | 2.6 ± 0.12 | 6.11 ± 0.22 | 19.6 ± 2.07 | 12.5 ± .22 | Found | 165.2 ± 3.9 | 103 ± 10.09 | 32.2 ± 3.9 | 2.2 ± 0.9 | 6.09 ± 0.08 | 19.2 ± 3.00 | 3.2 ± 3.9 |
| Step | | | | | | | | Certified | 108.6 ± 8.22 | 146.9 ± 22.30 | 27.83 ± 4.34 | 31.0 ± 5.0 | 4.58 ± 0.46 | 10.09 ± 1.4 | 8.25 ± 4.3 | Found | 110.34 ± 9.2 | 126.6 ± 10.68 | 29.86 ± 5.53 | 29.0 ± 7.8 | <4.52 | 9.11 ± 0.90 | 4.2 ± 8.60 |
| Step | | | | | | | | Certified | 97.13 ± 8.10 | 79.88 ± 5.7 | 14.18 ± 3.76 | 119.7 ± 11.2 | 3.29 ± 0.74 | 6.90 ± 0.89 | 4.5 ± 10.2 | Found | 68.8 ± 9.90 | 74.29 ± 7.1 | <13.11 | 117.0 ± 10.0 | 3.56 ± 0.91 | 6.59 ± 0.70 | <3.2 |
| Step | | | | | | | | Certified | 102.49 ± 8.2 | 64.8 ± 8.23 | 15.46 ± 5.99 | 56.08 ± 8.01 | 4.05 ± 0.47 | 5.84 ± 0.41 | 7.5 ± 10.3 | Found | 90.34 ± 9.05 | 63.09 ± 3.66 | 15.12 ± 4.52 | 54.2 ± 7.1 | 3.59 ± 0.82 | 4.33 ± 0.60 | 6.0 ± 13.0 |
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