Table 1 Physico-chemical properties, major elements, and heavy metal(loid)s of the experimental sediments
Properties | Methods | Unit | Value |
|---|---|---|---|
Grain size distribution | |||
 d > 2 mm | ASTM D 421 | % | 0 |
 0.063 mm < d ≤ 2 mm | 54.2 ± 2.7 | ||
 d ≤ 0.063 mm | 45.8 ± 3.8 | ||
Porosity | ASTM D 854 | % | 46.2 ± 4.5 |
pH | US-EPA 9045d |  | 6.8 ± 0.44 |
Buffering capacity | |||
to pH − 2.0 ± 0.2 | ASTM D4972 | mol H+/kg | 21.24 |
to pH − 13.0 ± 0.2 | mol OH−/kg | 0.96 | |
Water content | ASTM D 2980 | % | 31.4 ± 2.2 |
Electrical resistivity | ASTM D 5682 | Ω m | 0.75 ± 0.13 |
Electrical conductivity | ASTM D5298 | mS/cm | 13.4 ± 1.6 |
CEC | US-EPA 9081 | cmol/kg | 124.6 ± 8.3 |
Sulfur | US-EPA 9031 | % | 0.32 ± 0.02 |
Nitrogen | US-EPA 351.2 | % | 0.56 ± 0.04 |
OM | ASTM D 2974 | % | 12.3 ± 1.2 |
DOM | ASTM D7573 | mg/kg | 16.5 ± 1.7 |
Carbonate | ASTM D 4373 | % | 26.4 ± 4.3 |
Total carbon | ASTM D 5997 | % | 6.2 ± 0.93 |
Metals/salts | |||
 Ca | US-EPA 6020 | mg/kg | 6840 ± 560 |
 Fe | 8800 ± 420 | ||
 Al | 7260 ± 340 | ||
 Mg | 5050 ± 410 | ||
 Mn | 105.6 ± 8.2 | ||
 K | 2520 ± 340 | ||
 Na | 6380 ± 460 | ||
 P | 1540 ± 120 | ||
Heavy metal(loid)s | |||
 Cu | US-EPA 6020 | mg/kg | 83.7 ± 5.3 |
 Zn | 43.8 ± 3.2 | ||
 Cd | 0.8 ± 0.1 | ||
 As | 15.4 ± 1.8 | ||
 Ni | 16.2 ± 2.1 | ||
 Cr | 26.7 ± 4.6 | ||
 Pb | |||
 EXTa |  |  | 44.8 ± 4.2 |
 OXIDb | 98.8 ± 8.7 | ||
 REDc | 176 ± 12.4 | ||
 RESd | 25.7 ± 4.8 | ||