Study on distribution of elements in deep-sea Pacific polymetallic nodules via two-dimensional mapping laser ionization orthogonal time-of-flight mass spectrometry

被引:8
作者
Zhang, Bochao [1 ]
Zou, Dongxuan [1 ]
Huang, Rongfu [1 ]
Liu, Guangshan [2 ]
Gong, Zhenbin [2 ]
Hang, Wei [1 ,2 ]
Huang, Benli [1 ]
机构
[1] Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Key Lab Analyt Sci, Xiamen, Peoples R China
[2] Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China
关键词
Elemental mapping; Polymetallic nodule; Laser ablation and ionization; Mass spectrometry; FERROMANGANESE NODULES; SPECIATION; OCEAN; ZN; MN; GROWTH; PHASE; SOILS; CRUST; FE;
D O I
10.1016/j.sab.2013.03.007
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
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(-7) g/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. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:13 / 19
页数:7
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