Ra228
Ra-228 – Drinking Water
Group: Radiochemistry
Procedure: EZZ0147A
| Synonym(s): | Ra-228 in Water |
|---|---|
| Requisition Form | G-22 |
| Test Description | The determination of Ra-228 in drinking water samples. |
| Pre-Approval Needed | N/A |
| Supplemental Information Required | N/A |
| Supplemental Form(s) | N/A |
| Performed on Specimens from (sources) | Environmental |
| Sample/Specimen Type for Testing | Potable water, non-potable water. |
| Minimum Volume/Size Required | Hard or soft plastic; 1 gallon + 1 liter. |
| Storage/Preservation Prior to Shipping | None - Sample must be submitted to the laboratory within 5 days of collection. |
| Transport Medium | N/A |
| Specimen Labeling | Label each bottle with a water proof marker. Pre-printing labels is acceptable. Must match information on submission form. |
| Shipping and Specimen Handling Requirements | Sample must be submitted to the laboratory within 5 days of collection. |
| Method | SM 7500-RaD |
| Turn-around Time | Sample must be analyzed within 180 days of sample collection. The target sample turnaround time is 120 days from date of receipt. |
| Interferences/Limitations | N/A |
| Common Causes for Rejection | Insufficient quantity, unacceptable specimen type or source, improper shipping conditions, expired media or collection container, discrepancies between specimen label and submission form, incomplete or missing submission form |
| Additional Information | All radiochemical drinking water samples are analyzed for gross alpha (4002), gross beta (4100), radium 228 (4030) and uranium mass. If the combined gross alpha and radium 228 radioactivity exceeds 5 pCi/L, then radium 226 is also analyzed. |