Applying a method of analytical chemistry to this solution; also testing with a gamma rays radiometer.
Uranium is present in approx. 220 rocks and minerals.
Soluble uranium salt in solution
Proving is the present participle of prove.
Prove is the present tense.
By filtration
Uranium is found in the earth only in the form of compounds. Uranium is present in cca. 200 minerals.
1 nanogram of natural uranium = 2,53.1012 atoms
solution
Which compound
Absolutely none. Radium is element #88, while uranium is element #92. They are two completely different entities. If you are referring to uranium ores, it is a different story. The ratio is about 3 metric tons of uranium to 1 gram of radium. Oxygen and other elements are also present in uranium ore. http://en.wikipedia.org/wiki/Uranium#Oxides
Lead is always present in uranium-bearing rocks because lead is a decay product of uranium. As uranium undergoes radioactive decay, it transforms into different elements, including lead. This is a natural process that occurs over time in the rocks containing uranium.
If you mean subatomic particles, all of the standard ones are present.