Convert Femtobecquerels per kilogram to Becquerels per kilogram
Convert Femtobecquerels per kilogram (fBq/kg) to Becquerels per kilogram (Bq/kg) instantly and accurately.
Conversion Formula
Bq/kg = fBq/kg × 1.000000000e-15
About Femtobecquerels per kilogram
The femtobecquerel per kilogram (fBq/kg) equals 10⁻¹⁵ Bq/kg. Used in accelerator mass spectrometry (AMS) to quantify cosmogenic radionuclide concentrations (¹⁰Be, ³⁶Cl) in ice cores, sediments, and geological minerals where activities per unit mass are at the femto-level. Ultra-clean radiochemistry purity assessments for solar neutrino detectors also reach fBq/kg sensitivities. 1 fBq/kg = 10⁻¹⁵ Bq/kg.
About Becquerels per kilogram
The becquerel per kilogram (Bq/kg) is the SI derived unit of specific activity. It is the primary unit in food safety regulations worldwide: the EU, Japan, and Codex Alimentarius set ¹³⁷Cs limits in Bq/kg for foodstuffs; soil ¹³⁷Cs contamination from Chernobyl and Fukushima fallout is mapped in Bq/kg. 1 Bq/kg = 1 s⁻¹ kg⁻¹ = 1 mBq/g.
Quick Reference Table
| Femtobecquerels per kilogram (fBq/kg) | Becquerels per kilogram (Bq/kg) |
|---|---|
| 1 fBq/kg | 1 × 10-15 Bq/kg |
| 2 fBq/kg | 2 × 10-15 Bq/kg |
| 5 fBq/kg | 5 × 10-15 Bq/kg |
| 10 fBq/kg | 1 × 10-14 Bq/kg |
| 25 fBq/kg | 2.5 × 10-14 Bq/kg |
| 50 fBq/kg | 5 × 10-14 Bq/kg |
| 100 fBq/kg | 1 × 10-13 Bq/kg |