| Texas-Specific Soil Background Concentrations milligrams per kilogram (mg/kg)1 |
|
|---|---|
| Metal | Median Background Concentration (mg/kg) |
| Aluminum | 30,000 |
| Antimony | 1 |
| Arsenic | 5.9 |
| Barium | 300 |
| Beryllium | 1.5 |
| Boron | 30 |
| Total Chromium | 30 |
| Cobalt | 7 |
| Copper | 15 |
| Fluoride | 190 |
| Iron | 15,000 |
| Lead | 15 |
| Manganese | 300 |
| Mercury | 0.04 |
| Nickel | 10 |
| Selenium | 0.3 |
| Strontium | 100 |
| Tin | 0.9 |
| Titanium | 2,000 |
| Thorium | 9.3 |
| Vanadium | 50 |
| Zinc | 30 |
1Source: “Background Geochemistry of Some Rocks, Soils, Plants, and Vegetables in the Conterminous
United States”, by Jon J. Connor, Hansford T. Shacklette, et al., Geological Survey Professional Paper
574-F, US Geological Survey.
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