The Scientific World Journal / 2018 / Article / Tab 3

Research Article

Sequential Extractions and Toxicity Potential of Trace Metals Absorbed into Airborne Particles in an Urban Atmosphere of Southwestern Nigeria

Table 3

Mean values of total metal content (µgg−1) ± standard deviation of dust sampled.

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Pb70.49 ± 16.2777.11 ± 3.6765.54 ± 3.1386.20 ± 5.3451.82 ± 2.8811.82 ± 0.88
Cu3.54 ± 1.051.87 ± 3.680.62 ± 1.050.87 ± 1.051.72 ± 1.050.54 ± 1.05
Zn8.23 ± 0.6611.12 ± 3.172.79 ± 3.175.13 ± 3.179.89 ± 3.171.38 ± 3.17
Cr16.24 ± 1.5418.57 ± 2.7510.31 ± 1.549.92 ± 1.5410.01 ± 1.549.02 ± 1.54
Ni2.23 ± 9.124.58 ± 1.042.63 ± 9.125.55 ± 9.120.88 ± 9.120.87 ± 9.12
Mn5.81 ± 0.101.22 ± 1.070.98 ± 0.061.48 ± 0.021.91 ± 0.050.60 ± 0.03
Cd10.63 ± 1.036.06 ± 1.886.44 ± 2.018.21 ± 0.699.53 ± 1.123.05 ± 0.09