Aerosol Filter Sample Inhomogeneity in Samples with Debris from the Fukushima Diiachi Nuclear Accident

摘要

Results showed that unaccounted uncertainty ranged from 2% to 10% for ~(137)Cs (6% average). The Cs results showed that unaccounted uncertainty ranged from 0.4% to 8.7% (5% average). These sample inhomogeneities are in the range to account for the differences noted between the RASA and HVAS data. The variance could be the result of aerosol sampler design creating non-uniform aerosol deposits or it could due to actual inhomogenieties in the air mass. Regardless, such differences should be noted within aerosol sampling results and taken into account when performing forensics calculations utilizing the data.