Direct sector field ICP-MS determination of metal impurities in detonation nanodiamond

被引：36

作者：

Mitev, Dimitar F. ^{[1
]}

Townsend, Ashley T. ^{[2
]}

Paull, Brett ^{[1
]}

Nesterenko, Pavel N. ^{[1
]}

机构：

[1] Univ Tasmania, Sch Chem, Australian Ctr Res Separat Sci ACROSS, Hobart, Tas 7001, Australia

[2] Univ Tasmania, Cent Sci Lab, Hobart, Tas 7001, Australia

来源：

CARBON | 2013年 / 60卷

基金：

澳大利亚研究理事会;

关键词：

SURFACE-CHEMISTRY; HEAT-TREATMENT; DIAMOND; OXYGEN; POWDERS; CARBON; ACID; AIR;

D O I：

10.1016/j.carbon.2013.04.045

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A simple, rapid, sensitive and accurate method for the determination of metal impurities in detonation nanodiamond (DND), based upon the direct aspiration of aqueous suspensions of nanodiamond into a sector field inductively coupled plasma mass spectrometer (ICP-MS) is proposed. Quantitative release, atomisation and ionisation of the nanodiamond coated and encased elements, within the plasma, and their detection free from spectral interference, was confirmed by comparing results obtained from the direct ICP-MS analysis of aqueous suspensions with results from the ICP-MS analysis of the acidic digests of pre-ashed DND, obtained through DND combustion in air at 723 K for 48 h. The developed direct method was capable of the quantification of more than 30 elements at concentration levels of 10(-8) wt.%, with acceptable levels of precision and accuracy, from an aqueous suspension of just 0.1 mg mL(-1) DND. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：326 / 334

页数：9

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