Research Article
Metal Fractionation and Leaching in Soils from a Gold Mining Area in the Equatorial Rainforest Zone
Table 1
pH values of leachate collected during the column leaching test for soils A and B.
| | Number of leachates collected | Soil sample A (pH 3.52) | Soil sample B (pH 8.10) | | pH of leachate using NRW (pH 6.81) | pH of leachate using ARW (pH 4.41) | pH of leachate using NRW (pH 6.43) | pH of leachate using ARW (pH 2.71) |
| | First leachate | 2.97 | 6.65 | 8.68 | 8.82 | | Second leachate | 4.67 | 5.20 | 8.81 | 8.36 | | Third leachate | 6.10 | 4.19 | 8.36 | 7.80 | | Fourth leachate | 4.66 | 4.38 | 8.36 | 7.65 | | Fifth leachate | 4.32 | 4.62 | 8.47 | 5.95 | | Sixth leachate | — | — | — | 7.71 | | Seventh leachate | — | — | — | 7.70 |
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NRW: natural rainwater; ARW: artificial rainwater.
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