Question

If 450 mCi of TcO4 eluted from a generator contains 200 uCi Mo99, is the eluate within the standards of radionuclidic purity set forth by the NRC?

a. yes
b. no
c. the NRC does not regulate radionuclidic purity
d. it cannot be determined with the information
e. this is an example of radiochemical impurity rather than radionuclidic impurity

Answer 1

The eluate containing TcO4 and Mo99 is within the standards of radionuclidic purity set forth by the NRC.

Step-by-step explanation:

The question asks whether the eluate, containing 450 mCi of TcO4 with 200 uCi Mo99, is within the standards of radionuclidic purity set forth by the NRC. To determine this, we need to compare the amount of impurity (Mo99) to the total activity (TcO4). The NRC sets a limit of 0.15% for radiochemical impurity, so if the Mo99 content is less than 0.15% of the total activity, it would be within the standards. Let's calculate:

Total activity = 450 mCi = 450,000 uCi

Impurity content = 200 uCi

Impurity % = (Impurity content / Total activity) * 100

Impurity % = (200 / 450000) * 100 = 0.0444%

Since the impurity % is less than the NRC limit of 0.15%, the eluate is within the standards of radionuclidic purity set forth by the NRC. Therefore, the answer is a. yes.