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化学溶出実験法による海水魚中のリチウムの存在状態解析 State Analysis of Lithium in Ocean Fish by Chemical Leaching Experiments 玉利, 祐三 414 タマリ, ユウゾウ 土屋, 和幸 415 ツチヤ, カズユキ Tamari, Yuzo 416 Tsuchiya, Kazuyuki 417 リチウム 存在状態 イワシ マグロ 化学溶出実験 分画 炎光分析 lithium chemical existing state anchovy tuna chemical leaching experiment fractionation flame analysis 110004793105 application/pdf Lithium was contained rich in ocean sardine and anchovy; especially concentrated in the back-bone, head or gill of the fish, which were related with calcium as matrix components. In leaching experiments lithium was softly dissolved from the fish bone by shaking with a 0.1mol/l hydrochloric acid or a 0.1mol/l acetic acid solution after washing and removing the surface sea-water on the fish with water. The lithium leached in the acid solutions and remained to the residue was determined by flame photometry using the atomic absorption spectrophotometer with air-acetylene flame, after the decomposition with nitric-perchloric acid mixture. In the gill, head and back-bone of anchovy, 73, 71 and 71% of total lithium were dissolved with 0.1mol/l hydrochloric acid, respectively. Same leaching results were obtained for calcium; 78〜84% of total calcium were also dissolved with the same leaching solution. The ratio of lithium and calcium dissolved in hydrochloric acid or acetic acid were almost constant to be 3〜8×10^<-5> regardless of the sort of acid, the number of leaching fraction and the part of fish bone, and the ratio in the hydrochloric acid leaching was constant to be 7±2×10^<-5>. Those values was nearly equal to the ratio of 6±2×10^<-5> (n=9) of total lithium content of anchovy. It was, therefore, supposed that lithium was existed in fish bone as calcium compounds which was likely apatite or calcite, or a part of total lithium presented as the complexing component with calcium, which was passed through the dialysis filter less than 10000 as molecular weight. departmental bulletin paper 甲南大学 2005-12-25 VoR application/pdf 甲南大学紀要. 理工学編 2 52 223 230 Memoirs of Konan University. Science and engineering series AA11561231 13480383 https://konan-u.repo.nii.ac.jp/record/108/files/K00066.pdf https://doi.org/10.14990/00000103 https://konan-u.repo.nii.ac.jp/records/108 jpn