Determination of Metal Impurities in Carbon Nanotubes Sampled Using Surface Wipes
Joint Authors
Avramescu, Mary-Luyza
Rasmussen, Pat E.
Chénier, Marc
Source
Journal of Analytical Methods in Chemistry
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-11-16
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Residual metal impurities in carbon nanotubes (CNTs) provide a means to distinguish CNT from non-CNT sources of elemental carbon in environmental samples.
A practical and cost-effective analytical approach is needed to support routine surface monitoring of CNT metal tracers using wipe sampling.
Wipe sampling for CNT metal tracers is considered a qualitative indicator of the presence of CNTs, not a quantitative exposure metric.
In this study, two digestion approaches (microwave-assisted nitric acid/H2O2 digestion and ultrasonic nitric/HF acid digestion) in conjunction with Inductively Coupled Plasma Mass Spectrometry (ICP-MS) determination were evaluated for their ability to extract metal impurities from CNT particles captured on wipe substrates.
Aliquots of different carbon nanotubes (including NIST 2483 single-wall CNT) with and without GhostWipes™ (ASTM E-1792 compliant) were used to compare the performance of the digestion methods.
The microwave digestion method accommodated the bulky wipe sample and also eliminated potential ICP-MS signal interferences related to incomplete digestion.
Although quantitative recoveries requiring lengthy multistep digestion protocols may be necessary in other applications, the near-total recoveries achieved in the present study for CNT catalyst elements were adequate for identifying surface contamination of CNTs in the workplace using wipe sampling.
American Psychological Association (APA)
Avramescu, Mary-Luyza& Rasmussen, Pat E.& Chénier, Marc. 2016. Determination of Metal Impurities in Carbon Nanotubes Sampled Using Surface Wipes. Journal of Analytical Methods in Chemistry،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1107309
Modern Language Association (MLA)
Avramescu, Mary-Luyza…[et al.]. Determination of Metal Impurities in Carbon Nanotubes Sampled Using Surface Wipes. Journal of Analytical Methods in Chemistry No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1107309
American Medical Association (AMA)
Avramescu, Mary-Luyza& Rasmussen, Pat E.& Chénier, Marc. Determination of Metal Impurities in Carbon Nanotubes Sampled Using Surface Wipes. Journal of Analytical Methods in Chemistry. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1107309
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1107309