利用LA-ICP-MS對於魚鱗元素組成之研究

Elemental Distributions of Fish Scales Determined by LA-ICP-MS

賴妍辰(Lai, Yan Chen)

指導教授 ： 王竹方

國立清華大學/原子科學院/生醫工程與環境科學系/碩士(2014年)

https://doi.org/10.6843/NTHU.2014.00422

摘要

魚鱗總是暴露在水的環境中，所以我們推論當外界污染源進入所棲息之水體環境
時，能夠反應於魚鱗中。在這項研究中，本研究嘗試應用雷射剝蝕感應耦合電漿質譜儀搭配掃描電子顯微鏡進行表面分析技術，針對於不同水體環境之魚鱗進行分析，取得魚鱗的組成元素及空間分布的資訊。此分析結果，與預期一致，魚鱗中的特定元素（鈣、鎂、鍶、鋇、錳）在水體吸收後獨特分佈可以作另一種魚類的成長紀錄的選擇。有趣的是，從我們進一步的吸附實驗顯示，發現到鍶對於魚鱗中磷酸鈣有極佳的親和性，而這些金屬元素(錳、鎳、鋅、鉛)主要分佈在魚鱗表面的外圍部分，所以利用這些組成元素和吸附結果的分佈不同和魚鱗經過吸收鈣化的過程中，可提供為更多元的水體環境污染紀錄監測的選擇。

關鍵字

魚鱗 ； 雷射剝蝕感應耦合電漿質譜儀 ； 羥基磷酸鈣 ； 空間分佈 ； 重金屬

並列摘要

Fish scale are always exposing to the aquifer environment, which is expected to be capable of reflecting the accidental release of environmental pollutants in the habitat. In this study, we applied the technique of Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) and Scanning Electron Microscope (SEM) to determinate the spatial distribution of multi-elements on different species of fish scales. It was found that, as expected, the growth history is straightforwardly recorded as the distinct distributions and the hot zones of alkaline earth elements (Ca, Sr, and Ba) on fish scales. Results from our further adsorption experiments clearly suggested that those heavy metal elements (Mn, Ni, Zn, Pb) would locate the fish scale periphery, which is different from the distribution patterns of those naturally calcified elements. From this point of view, it is clear that calcified fish tissues that are excellent biomonitor recording the release of environmental pollutions in their habitat.

並列關鍵字

Fish scale ； LA-ICP-MS ； Hydroxyapatite layer ； Spatial distribution ； Heavy metals

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