Research Article
A Critical Evaluation of Single Extractions from the SMT Program to Determine Trace Element Mobility in Sediments
Table 5
Average, standard deviation, median, minimum, and maximum of the amounts of major and trace metals extracted with acetic acid and ammonium-EDTA.
| Acetic acid | | | | | | | | | | | | | | | Cr | Cu | Zn | Ni | As | Cd | Pb | Co | Mn | K | Fe | Ca | Al | pH | | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg |
| Average | 2 | 10.4 | 436 | 8.02 | 3.26 | 8 | 5 | 1.3 | 104 | 338 | 1049 | 11386 | 172 | 3.1 | Stdv | 2 | 15.3 | 652 | 8.81 | 5.60 | 13 | 11 | 1.2 | 121 | 786 | 2223 | 8865 | 126 | 0.4 | Median | 1 | 3.3 | 197 | 6.34 | 1.49 | 5 | 1 | 1.1 | 74 | 195 | 296 | 7846 | 145 | 3.1 | Min | <0.01 | <0.01 | 4 | <0.01 | 0.05 | 0.1 | <0.01 | 0.1 | 2 | 65 | 47 | 1126 | 28 | 2.2 | Max | 10 | 77.0 | 3574 | 43.88 | 26.96 | 69 | 65 | 4.8 | 592 | 6788 | 13143 | 38694 | 844 | 3.6 |
| Ammonium-EDTA | | | | | | | | | | | | | | | Cr | Cu | Zn | Ni | As | Cd | Pb | Co | Mn | K | Fe | Ca | Al | pH | | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg |
| Average | 1 | 31 | 419 | 7.76 | 2.4 | 10 | 49 | 0.7 | 50 | 228 | 3176 | 9066 | 68 | 6.3 | Stdv | 1 | 43 | 578 | 9.56 | 3.6 | 21 | 81 | 0.6 | 66 | 143 | 2957 | 4478 | 59 | 1.0 | Median | 1 | 20 | 216 | 5.65 | 1.2 | 5 | 21 | 0.5 | 41 | 182 | 2039 | 9178 | 50 | 6.4 | Min | <0.01 | 0.10 | 2 | 0.45 | 0.02 | <0.01 | <0.01 | <0.01 | <0.01 | 51 | 176 | 1232 | 8 | 4.6 | Max | 6 | 177 | 2539 | 51.67 | 16 | 109 | 389 | 3.3 | 527 | 603 | 11902 | 18718 | 265 | 7.8 |
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