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Gold colloid analysis by inductively coupled plasma-mass spectrometry in a single particle mode
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Nuclear Chemistry.
2006 (English)In: Analytica Chimica Acta, ISSN 0003-2670, E-ISSN 1873-4324, Vol. 555, no 2, 263-268 p.Article in journal (Refereed) Published
Abstract [en]

Analysis in a single particle mode of gold colloids in water has been performed by inductively coupled plasma-mass spectrometry (ICP-MS). The signal induced by the flash of ions due to the ionization of a colloid in the plasma torch can be measured for the ions (197)An(+) by the mass spectrometer without interferences. The intensity of the MS signal is recorded in time scan. The recorded peak distributions were analysed as a function of the colloid size for five monodisperse colloids (80-250 nm). This study describes the experimental conditions to analyse gold colloids in a single particle mode. The size detection limit is around 25 nm corresponding to 0.15 fg colloids and one particle per ml may be detected during a 1 min time scan within standard procedure.

Place, publisher, year, edition, pages
2006. Vol. 555, no 2, 263-268 p.
Keyword [en]
single particle analysis, inductively coupled plasma-mass spectrometry, ICP-MS, gold colloid, colloid size, scattering, biology, waters
Identifiers
URN: urn:nbn:se:kth:diva-15371DOI: 10.1016/j.aca.2005.09.021ISI: 000234585600012Scopus ID: 2-s2.0-29244434509OAI: oai:DiVA.org:kth-15371DiVA: diva2:333412
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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