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Quantitative Analysis of Metal Impurities in Carbon Nanotubes: Efficacy of Different Pretreatment Protocols for ICPMS Spectroscopy
Ge CC(葛翠翠); Lao F(劳芳); Li W(李炜); Li YF(李玉锋); Chen CY(陈春英); Li B(李柏); Qiu Y(邱杨); Mao XY(毛雪瑛); Chai ZF(柴之芳); Chen CY(陈春英); Ge, CC; Lao, F; Li, W; Li, YF; Chen, CY; Qiu, Y; Mao, XY; Li, B; Chai, ZF; Zhao, YL
2008
发表期刊ANALYTICAL CHEMISTRY
卷号80期号:24页码:9426-9434
通讯作者[Chen, Chunying] Chinese Acad Sci, Inst High Energy Phys, Lab Bioenvironm Effects Nanomat & Nanosafety, Beijing 100049, Peoples R China ; Natl Ctr Nanosci & Technol China NCNST, Beijing 100190, Peoples R China
文章类型Article
摘要Metal impurities in carbon nanotubes (CNTs) are undesirable for their uses in diverse applications, for instance, they may potentially have a negative health impact when using in biomedical fields. However, so far there is a lack of analysis methods able to quantify metallic impurities in CNTs. In this paper, using the neutron activation analysis (NAA) technique as a nondestructive standard quantification method and inductively coupled plasma mass spectrometry (ICPMS) as a practical approach, we established an analytical method for quantitative determination of metallic impurities in CNTs. ICPMS, one of the most sensitive analytical techniques used for coincident multielement measurements, has become a common tool in many laboratory, and thus it is easily available and a good selection for determining the metal impurities in CNTs. However, because of their extremely stable structure and the encapsulated metals in the defect structure, CNTs must undergo special pretreatments before ICPMS. We investigated different sample pretreatment procedures for ICPMS analysis, including dry ashing coupled with acid extraction, wet digestion, and a combination of dry ashing with acid digestion. With the reference data from the nondestructive analytical method of NAA, we found that the quantitative determination of metal impurities in CNTs is highly dependent on the sample pretreatment in which the conditions are largely different from those used for conventional biological samples or environmental materials. This paper not only provides the practical method and analysis conditions for quantifying the metal impurities of CNTs but also the first protocol for pretreatment processes of CNT samples.
学科领域Chemistry
研究领域[WOS]Chemistry ; Chemistry
DOI10.1021/ac801469b
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语种英语
研究领域[WOS]Chemistry ; Chemistry
WOS类目Chemistry, Analytical
WOS记录号WOS:000261728900007
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被引频次:107[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240159
专题院士
实验物理中心
加速器中心
多学科研究中心
作者单位中国科学院高能物理研究所
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Ge CC,Lao F,Li W,et al. Quantitative Analysis of Metal Impurities in Carbon Nanotubes: Efficacy of Different Pretreatment Protocols for ICPMS Spectroscopy[J]. ANALYTICAL CHEMISTRY,2008,80(24):9426-9434.
APA 葛翠翠.,劳芳.,李炜.,李玉锋.,陈春英.,...&Zhao, YL.(2008).Quantitative Analysis of Metal Impurities in Carbon Nanotubes: Efficacy of Different Pretreatment Protocols for ICPMS Spectroscopy.ANALYTICAL CHEMISTRY,80(24),9426-9434.
MLA 葛翠翠,et al."Quantitative Analysis of Metal Impurities in Carbon Nanotubes: Efficacy of Different Pretreatment Protocols for ICPMS Spectroscopy".ANALYTICAL CHEMISTRY 80.24(2008):9426-9434.
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