Evaluation of origin place of corbicula japonica using fluorescence properties of samples by firing shells

Abstract

The fluorescence samples (CaO matrix and Mn activator) was prepared by firing corbicula japonica shells at 900°C, where the origin places of those were the lake Abashiri, the lake Ogawara, the Kisogawa, the lake Ju-san, the lake Shinji and the lake Hinuma. All the samples showed orange color fluorescence with the peak at 594 nm. The fluorescence intensity increased with increase of the Mn/Ca ratio of the samples except the sample of the lake Ju-san.