Wang TsingHai, Lai Yan-Chen, Chiang Chia-Che, Cheng Yu-Rong, Hsieh Yi-Kong, Wang Chu-Fang
Biomedical Engineering and Environment Sciences, National Tsing Hua University, Hsinchu, Taiwan.
Environ Monit Assess. 2016 Mar;188(3):180. doi: 10.1007/s10661-016-5174-x. Epub 2016 Feb 22.
The elemental content of fish scales is known to be a reliable biogeochemical tag for tracing the origin of fishes. In this study, this correlation is further confirmed to exist on the surface of fish scales using a novel environmental analytical method, laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), which bypasses several complicated sample preparation procedures such as acid digestion and pre-concentration. The results suggest that the elemental ratios of Sr/Ca, Ba/Ca, and Mn/Ca on the surface of fish scales are strongly correlated with the geochemical environment of their original habitat. This correlation is further demonstrated to be sensitive to variation of water in the habitat due to the adsorbed inorganic ions. In this sense, the limitation of fish scales as a biogeochemical tag is the sensitivity of LA-ICP-MS toward the studied elements. Graphical abstract Illustration of the connection between element distribution pattern over the surface of fish scales and biogeochemical environment of its habitat.
鱼鳞的元素含量是用于追溯鱼类来源的可靠生物地球化学标记。在本研究中，使用一种新型环境分析方法——激光烧蚀电感耦合等离子体质谱法（LA-ICP-MS），绕过了诸如酸消解和预浓缩等几个复杂的样品制备程序，进一步证实了这种相关性存在于鱼鳞表面。结果表明，鱼鳞表面的Sr/Ca、Ba/Ca和Mn/Ca元素比值与其原始栖息地的地球化学环境密切相关。由于吸附的无机离子，这种相关性进一步证明对栖息地水体变化敏感。从这个意义上说，鱼鳞作为生物地球化学标记的局限性在于LA-ICP-MS对所研究元素的灵敏度。图形摘要 鱼鳞表面元素分布模式与其栖息地生物地球化学环境之间联系的示意图。
