Table 3.
ICP-MS analysis of the five pemba samples: results in micrograms per gram
| Sample 1 | Sample 2 | Sample 3 | Sample 4 | Sample 5 | |
|---|---|---|---|---|---|
| Aluminum | 11,493 | 20,788 | 13,640 | 13,121 | 17,956 |
| Silicon | 10,893 | 10,648 | 10,951 | 11,344 | 7,171 |
| Calcium | 3,205 | 1,965 | 2,481 | 1,807 | 3,368 |
| Iron | 456 | 1,518 | 1,731 | 977 | 720 |
| Titanium | 202 | 411 | 225 | 524 | 271 |
| Barium | 54.6 | 32.1 | 36.1 | 35.3 | 55.8 |
| Zinc | 28.1 | 18.9 | 23.6 | 22.1 | 31.5 |
| Magnesium | 23 | 39 | 28 | 35 | 30 |
| Boron | 14 | 12 | 13 | 9 | 9 |
| Selenium | 7.4 | 6.8 | 10 | 6.4 | 9.66 |
| Vanadium | 7.1 | 15.9 | 8 | 15.6 | 12.9 |
| Lead | 5.61 | 9.12 | 9.28 | 4.53 | 9.65 |
| Gallium | 3.69 | 9.2 | 6.01 | 7.06 | 6.28 |
| Lanthanum | 2.32 | 6.84 | 3.11 | 3.45 | 4.31 |
| Tungsten | 2.23 | 0.14 | 0.10 | 0.09 | 0.28 |
| Strontium | 1.56 | 4.44 | 1.46 | 2.06 | 1.9 |
| Manganese | 1.02 | 1.72 | 1 | 1.44 | 2.06 |
| Nickel | 0.97 | 2.50 | 0.98 | 2.13 | 2.66 |
| Germanium | 0.79 | 1.20 | 1.31 | 1.06 | 1.20 |
| Others* | < 1 | < 1 | < 1 | < 1 | < 1 |
*
Others include tin, rubidium, lithium, cobalt, mercury, silver, molybdenum, thallium, palladium, uranium, gadolinium, copper, tellurium, beryllium, cadmium, antimony, arsenic, platinum, and bismuth.