Table 2. Element concentrations median and range.
Element concentrations (ppm DW) of pelagic Sargassum spp. tissue collected from eight localities along the Mexican Caribbean coast between 2018 and 2019. The number of samples with readings above LOD are expressed in % of the total sample size (n = 63).
| Element | LOD | Samples with readings above LOD (%) | Minimum | Maximum | Median |
|---|---|---|---|---|---|
| Al | 140 | 58.7 | <LOD | 500 | 206 |
| As | 4 | 100 | 24 | 172 | 80 |
| Ca | 394 | 100 | 23,723 | 136,146 | 70,040 |
| Cl | 266 | 100 | 747 | 53,101 | 22,350 |
| Cu | 6 | 7.9 | <LOD | 540 | <LOD |
| Fe | 3 | 7.9 | <LOD | 11 | <LOD |
| K | 333 | 100 | 1,990 | 46,002 | 19,666 |
| Mg | 2,915 | 92.1 | <LOD | 13,662 | 6,537 |
| Mn | 13 | 100 | 40 | 139 | 71 |
| Mo | 1 | 7.9 | <LOD | 7 | <LOD |
| P | 145 | 100 | 228 | 401 | 327 |
| Pb | 2 | 7.9 | <LOD | 3 | <LOD |
| Rb | 1 | 100 | 30 | 143 | 56 |
| S | 199 | 100 | 9,462 | 24,773 | 14,363 |
| Si | 342 | 100 | 447 | 2,922 | 1,767 |
| Sr | 6 | 100 | 1,605 | 2,564 | 1,890 |
| Th | 1 | 100 | 5 | 23 | 10 |
| U | 4 | 100 | 11 | 48 | 23 |
| V | 3 | 28.6 | <LOD | 13 | <LOD |
| Zn | 5 | 12.7 | <LOD | 17 | <LOD |
Notes.
LOD, Limit of detection.