Application of three data evaluation methods for in situ iron isotope analysis using the ns-LA-MC-ICP-MS technique

doi:10.1039/d1ja00410g

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Application of three data evaluation methods for in situ iron isotope analysis using the ns-LA-MC-ICP-MS technique
	Yang, Qichao 3,4; Gong, Hongmei 2; Wang, Xiaohong 2; Duan, Meng 2; Xiao, Yuanyuan 1,2,6; Sun, Weidong 1,5,6
刊名	JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
	2022-03-30
页码	10
ISSN号	0267-9477
DOI	10.1039/d1ja00410g
通讯作者	Xiao, Yuanyuan(yuanyuan.xiao@qdio.ac.cn)
英文摘要	To investigate performances of different data evaluation methods in terms of accuracy and precision for in situ Fe isotope analysis, the reference glass BHVO-2G is analyzed in both line scan and spot analysis modes using a nanosecond laser ablation system coupled to multi-collector inductively coupled plasma mass spectrometry (ns-LA-MC-ICP-MS). Three data processing methods, i.e., the individual data points method, the linear fitting method and the section integration method, are applied to evaluate Fe isotope ratios from single analyses. delta Fe-56 and delta Fe-57 values obtained from the three methods are in excellent agreement with the published results, with analytical uncertainties (2SD) of 0.12-0.13 parts per thousand for delta Fe-56 and 0.19-0.22 parts per thousand for delta Fe-57, suggesting their practicability for the Fe transient signal. However, the linear fitting method exhibits slightly poorer reproducibility in comparison with the other two because the fitting slope may be more sensitive to the distribution of ablation data points with high intensities. Both the individual data points and section integration methods show highly consistent results with each other, thus are equally capable of in situ Fe signal processing. The spot analyses with significant signal decline during ablation yield analytical uncertainties approximately double those of line scan. When selecting ablation intervals with different lengths within the line scan signal range, it is observed that the intervals selected from the start of the ablation process can be shortened to 60 s or less, corresponding to a <= 60 mu m ablation line on the sample surface, to yield decent accuracy and precision.
资助项目	National Natural Science Foundation of China[41776069] ; Special Project of Strategic Leading Science and Technology of Chinese Academy of Sciences[XDB42020302] ; Fundamental Research Funds for Central Universities
WOS研究方向	Chemistry ; Spectroscopy
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000779871500001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/178696]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Xiao, Yuanyuan
作者单位	1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China 4.Guangdong Ind Polytech, Sch Chem Engn & Technol, Guangzhou 510300, Peoples R China 5.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Qingdao 266071, Peoples R China 6.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Yang, Qichao,Gong, Hongmei,Wang, Xiaohong,et al. Application of three data evaluation methods for in situ iron isotope analysis using the ns-LA-MC-ICP-MS technique[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2022:10.
APA	Yang, Qichao,Gong, Hongmei,Wang, Xiaohong,Duan, Meng,Xiao, Yuanyuan,&Sun, Weidong.(2022).Application of three data evaluation methods for in situ iron isotope analysis using the ns-LA-MC-ICP-MS technique.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,10.
MLA	Yang, Qichao,et al."Application of three data evaluation methods for in situ iron isotope analysis using the ns-LA-MC-ICP-MS technique".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY (2022):10.