Study on distribution of elements in deep-sea Pacific polymetallic nodules via two-dimensional mapping laser ionization orthogonal time-of-flight mass spectrometry
Study on distribution of elements in deep-sea Pacific polymetallic nodules via two-dimensional mapping laser ionization orthogonal time-of-flight mass spectrometry
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DOI：
10.1016/j.sab.2013.03.007
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发表时间：
2013-07
期刊：
影响因子：
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通讯作者：
Bochao Zhang;D. Zou;Rongfu Huang;Guangshan Liu;Z. Gong;W. Hang;Benli Huang
中科院分区：
文献类型：
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作者：
Bochao Zhang;D. Zou;Rongfu Huang;Guangshan Liu;Z. Gong;W. Hang;Benli Huang
新研制的二维测绘高辐照度激光电离正交飞行时间质谱仪已用于多金属结核的元素测绘。使用两种多金属结核标准来证明LI-O-TOFMS用于无标准半定量分析的有效性，并绘制了深海太平洋多金属结核中元素的空间分布图。结果表明，Mn-Ni-Cu-Fe和Co-Si-Al两组元素具有明显的元素空间相关性。据推测，这些空间分布反映了结核形成期间的环境和物理化学条件。LI-O-TOFMS是多金属结核元素分析的有力工具，其检测限低至10 - 7 g/g，动态范围为7个数量级。基于获取的图像，可以直观地显示元素的内容及其关系。
A newly developed two-dimensional mapping high irradiance laser ionization orthogonal time-of-flight mass spectrometer (LI-O-TOFMS) has been applied for the elemental mapping of polymetallic nodules. Two polymetallic nodule standards were used to demonstrate the efficacy of LI-O-TOFMS for the standardless semiquantitative analysis and the spatial distribution of elements in a deep-sea Pacific polymetallic nodule was mapped. It was found that the two groups of elements, Mn–Ni–Cu–Fe and Co–Si–Al, show clear element-dependent spatial relationships. It is hypothesized that these spatial distributions reflect the environmental and physico-chemical conditions during the nodule formation. LI-O-TOFMS is shown to be a powerful tool in elemental analysis of polymetallic nodules, with the detection limits down to 10−7g/g and a dynamic range of 7 orders of magnitude. Based on the images acquired, the contents of elements and their relationships can be revealed visually.