Convert Femtobecquerels per kilogram to Nanocuries per kilogram
Convert Femtobecquerels per kilogram (fBq/kg) to Nanocuries per kilogram (nCi/kg) instantly and accurately.
Conversion Formula
nCi/kg = fBq/kg × 2.702702703e-17
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 Nanocuries per kilogram
The nanocurie per kilogram (nCi/kg) equals 37 Bq/kg. US EPA soil screening levels for ²²⁶Ra and ²²⁸Ra are given in pCi/g which equals nCi/kg; NRC derived concentration guides (DCGs) for radionuclides in soil for unrestricted-use release are expressed in nCi/kg in 10 CFR Part 20. 1 nCi/kg = 37 Bq/kg = 3.7 × 10⁻⁸ Ci/kg.
Quick Reference Table
| Femtobecquerels per kilogram (fBq/kg) | Nanocuries per kilogram (nCi/kg) |
|---|---|
| 1 fBq/kg | 2.703 × 10-17 nCi/kg |
| 2 fBq/kg | 5.405 × 10-17 nCi/kg |
| 5 fBq/kg | 1.351 × 10-16 nCi/kg |
| 10 fBq/kg | 2.703 × 10-16 nCi/kg |
| 25 fBq/kg | 6.757 × 10-16 nCi/kg |
| 50 fBq/kg | 1.351 × 10-15 nCi/kg |
| 100 fBq/kg | 2.703 × 10-15 nCi/kg |