Official Journal of the Asia Oceania Geosciences Society (AOGS)
Table 4 Chemical analysis of heavy metal in soil samples
Parameter | ||||||||
|---|---|---|---|---|---|---|---|---|
Sample | Element | Number of samples | Minimum | Maximum | Average | Standard deviation | Standard error is about 95% confidence | |
Soil | Lead | 30 | 17.1 | 79.9 | 38.79 | 13.71 | 2.5 | 38.79 ± 5.31 |
Copper | 30 | 17.6 | 65.5 | 29.65 | 8.91 | 1.63 | 29.65 ± 3.56 | |
Nickel | 30 | 27.1 | 42.5 | 33.05 | 3.42 | 0.62 | 33.05 ± 1.37 | |
Organic matter | 30 | 1.6 | 4.64 | 2.32 | 0.6 | 0.11 | 2.32 ± 0.23 | |
Effluent | Lead | 30 | 0.06 | 2.25 | 1.43 | 0.96 | 0.18 | 1.43 ± 1.53 |
Copper | 30 | 0.05 | 0.5 | 0.21 | 0.2 | 0.04 | 0.21 ± 0.32 | |
Nickel | 30 | 0.06 | 0.1 | 0.08 | 0.02 | 0.01 | 0.08 ± 0.03 | |
Acidity | 30 | 7.21 | 7.33 | 7.66 | 0.31 | 0.06 | 7.66 ± 0.4 | |