Optimization and validation of combustion-based analysis of organically bound tritium in pine needles. - Kuwata, Haruka; Kheamsiri, Khemruthai; Yamada, Ryohei; Tamari, Toshiya; Kakiuchi, Hideki; Tanaka, Masahiro; Akata, Naofumi (Journal of Radioanalytical & Nuclear Chemistry, 2025)