Convert Disintegrations per minute per cubic metre to Microbecquerels per cubic metre
Convert Disintegrations per minute per cubic metre (dpm/m³) to Microbecquerels per cubic metre (µBq/m³) instantly and accurately.
Conversion Formula
µBq/m³ = dpm/m³ × 16666.66667
About Disintegrations per minute per cubic metre
The disintegration per minute per cubic metre (dpm/m³) equals exactly 1/60 Bq/m³ ≈ 16.7 mBq/m³. Used in legacy US nuclear industry and older radiochemistry literature for low-level airborne radioactivity; some historical derived air concentration (DAC) limit publications cite values in dpm/m³. 1 dpm/m³ = 1/60 Bq/m³ ≈ 16.7 mBq/m³.
About Microbecquerels per cubic metre
The microbecquerel per cubic metre (µBq/m³) equals 10⁻⁶ Bq/m³. Routine air sampling at nuclear plant site boundaries reports ¹³⁷Cs, ⁵⁸Co, and ⁶⁰Co at µBq/m³; ²²²Rn progeny (²¹⁴Pb, ²¹⁴Bi) in well-ventilated outdoor air are typically tens of µBq/m³. 1 µBq/m³ = 10⁻⁶ Bq/m³ = 10⁻³ mBq/m³.
Quick Reference Table
| Disintegrations per minute per cubic metre (dpm/m³) | Microbecquerels per cubic metre (µBq/m³) |
|---|---|
| 1 dpm/m³ | 16666.7 µBq/m³ |
| 2 dpm/m³ | 33333.3 µBq/m³ |
| 5 dpm/m³ | 83333.3 µBq/m³ |
| 10 dpm/m³ | 166667 µBq/m³ |
| 25 dpm/m³ | 416667 µBq/m³ |
| 50 dpm/m³ | 833333 µBq/m³ |
| 100 dpm/m³ | 1666670 µBq/m³ |