深海沉积物元素现场测定及方法对比研究

引用本文: 张颖, 汪虹敏, 王小静, 王赛, 崔菁菁, 李传顺, 刘季花. 深海沉积物元素现场测定及方法对比研究[J]. 分析化学, 2018, 46(4): 570-577. doi: 10.11895/j.issn.0253-3820.171204 shu

Citation: ZHANG Ying, WANG Hong-Min, WANG Xiao-Jing, WANG Sai, CUI Jing-Jing, LI Chuan-Shun, LIU Ji-Hua. On-site Determination of Element Concentrations in Marine Sediments and Comparative Study of Analytical Methods[J]. Chinese Journal of Analytical Chemistry, 2018, 46(4): 570-577. doi: 10.11895/j.issn.0253-3820.171204 shu

深海沉积物元素现场测定及方法对比研究

1.
国家海洋局第一海洋研究所, 海洋沉积与环境地质国家海洋局重点实验室, 青岛 266061;
2.
青岛海洋科学与技术国家实验室, 海洋地质过程与环境功能实验室, 青岛 266237
基金项目:
本文系国际海域资源调查与开发"十三五"规划项目（Nos.DY135-R2-1-01，DY135-R2-1-03）和国家自然科学基金项目（No.41606075）资助

摘要: 应用Epsilon 3^x系列小型台式能量色散X射线荧光光谱仪（EDXRF）对采集的印度洋深海沉积物样品进行现场元素分析，并与电感耦合等离子体发射光谱仪（ICP-OES）、电感耦合等离子体质谱仪（ICP-MS）两种仪器的实验室测试数据进行了对比分析。结果表明，8种主量元素（Al、Mg、Fe、K、Ca、Mn、P、Ti）和16种微量元素（Ba、Sr、V、Zn、Zr、Co、Ni、Cu、Ga、Rb、Y、Nb、Mo、Nd、Pb、Th）分析数据的一致性良好，具有很好的线性相关性，主量元素除Al，微量元素除含量低于30 μg/g的Ga、Nb、Th外，相关系数都大于0.9；同时，对部分元素在不同浓度范围下的平均相对偏差进行了计算。研究表明，小型台式EDXRF现场测定值具有很高的准确度和可靠性，这为大洋现场调查中及时了解矿产资源的分布情况提供了新的方法和重要的技术手段。

关键词:

English

On-site Determination of Element Concentrations in Marine Sediments and Comparative Study of Analytical Methods

1.
The First Institute of Oceanography, State Oceanic Administration, Key Laboratory of Marine Sedimentology and Environmental Geology, Qingdao 266061, China;
2.
Function Laboratory for Marine Geology, National Oceanography Laboratory, Qingdao 266237, China
Received Date: 28 August 2017
Revised Date: 22 January 2018
Fund Project:
This work was supported by the China Ocean Mineral Resources Research and Development Association Research Program (Nos.DY135-R2-1-01, DY135-R2-1-03), and the National Natural Science Foundation of China (No.41606075).

Abstract: Epsilon 3^x energy dispersive X-ray fluorescence spectrometer (EDXRF) was used to analyze the major and minor elements in marine sediments collected from the Indian Ocean on-site. Results obtained by EDXRF were compared with those by inductively coupled plasma-mass spectrometry (ICP-MS) and inductively coupled plasma-optical emission spectrometry (ICP-OES) in the laboratory A total of 24 elements in marine sediment samples, namely Al₂O₃, MgO, Fe₂O₃, Na₂O, K₂O, CaO, Mn, P, Ti, Ba, Sr, V, Zn, Zr, Co, Ni, Cu, Ga, Rb, Y, Nb, Mo, Nd, Pb and Th were measured, and a good agreement was found for these elements (R²>0.9), except for Al₂O₃, and Ga, Nb and Th with content lower than 30 μg/g. The mean relative deviations of EDXRF method were less than 10% for all of the above mentioned major elements, except for MgO in low concentration and P in high concentration. The mean relative deviations were less than 25% for all of the above mentioned trace elements, except for Sr (>700 μg/g), Mo (<20 μg/g) and Nb. In general, precision and accuracy of EDXRF method were good enough for detection of marine sediments. Taking into account all these facts, the EDXRF method proposed here was proved to be an effective tool for element determination in marine sediment on-site, and it would provide a new technical support to investigate the spatial distribution of mineral resources in marine geological survey.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

深海沉积物元素现场测定及方法对比研究

English

On-site Determination of Element Concentrations in Marine Sediments and Comparative Study of Analytical Methods

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

深海沉积物元素现场测定及方法对比研究

English

On-site Determination of Element Concentrations in Marine Sediments and Comparative Study of Analytical Methods

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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