Confirmation of Interlayer Sulfidization of Malachite by TOF-SIMS and Principal Component Analysis

被引：15

作者：

Deng, Jiushuai ^{[1
,2
,3
]}

Lai, Hao ^{[4
]}

Wen, Shuming ^{[4
]}

Li, Shimei ^{[4
]}

机构：

[1] Zhengzhou Univ, Sch Chem Engn & Energy, Zhengzhou 450001, Henan, Peoples R China

[2] China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China

[3] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada

[4] Kunming Univ Sci & Technol, Fac Land Resource Engn, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China

来源：

MINERALS | 2019年 / 9卷 / 04期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

malachite; sulfidization; interlayer; TOF-SIMS; principal component analysis; MINERALS; CHEMISTRY; SURFACES; PYRITE; MONO;

D O I：

10.3390/min9040204

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In this work, a sulfidization mechanism of malachite was confirmed based on the depth profile product, principal component, and depth profile curve analyses of time-of-flight secondary ion mass spectrometry (TOF-SIMS). The results showed that Cu/S species, including fragment ion peaks of Cu2S+, Cu3S+, S-, HS-, S-2(-), CuS2-, and CuS3-, were present in the inner layers of sulfidized malachite in the positive and negative spectral ranges 75-400 and 30-470 m/z. Na2S reacted with the surface and inner atoms, causing simultaneous sulfidization of malachite on the surface and in the inner layers. The inner layer mainly contained positive fragment ions with large Cu/S ratios. In summary, the interlayer sulfidization phenomenon was confirmed and the differences in sulfidization products between the surface and inner layers were determined.

引用

页数：10

共 40 条

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