- The barium sulfate must be a lump-free powder .
- There is reflux of barium into the terminal ileum .
- Diagnosis can usually be made by barium swallow and tracheogram .
- Common ceramic elements are barium titanate and lead zirconate-titanate .
- Barium is found in some oilfield brines in concentrations greater than 100mg/litre .
Barium is a chemical element with symbol?Ba and atomic number?56. It is the fifth element in Group 2, a soft silvery metallic alkaline earth metal.