- Aluminum (AL)
- Antimony (Sb)
- Arsenic (As)
- Boron (B)
- Barium (Ba
- Cadmium (Cd)
- Chromium (Cr)
- Cobalt (Cu)
- Iron (Fe)
- Lead (Pb)
- Manganese (Mg)
- Mercury (Hg)
- Molybdenum (Mo)
- Nickel (Ni)
- Potassium (K)
- Selenium (Se)
- Sodium (Na)
- Tin (Sn)
- Titanium (Ti)
- Vanadium (V)
- Zinc (Zn)
