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Novel dysprosium and terbium doped taggants for hydrocarbon identification.

Nkwoada, Amarachi; Officer, Simon


Amarachi Nkwoada

Simon Officer


Taggants are synthesized fluorescent materials that have longer lifetime and are able to discriminate against background interference arising from hydrocarbons. Doped taggants were prepared with dysprosium and terbium rare earths in a stable borosilicate and tellurite glass host. The composition of the doped borosilicate glass were (60-x) ZnO + 20B2O3 + 20SiO2 + xLa3+ (where La3+ = Tb and Dy), while the composition of doped tellurite glass composition was (80-x) TeO2 + 20LiCO3 + xLa3+ (where La3+ = Tb and Dy) with values of x corresponding to mol% increase from 0.5, 1.0, 1.5, and 2.0 and subsequent decrease of ZnO and TeO2 composition. The fluorescence emissions of dysprosium doped borosilicate and tellurite glass was 574 nm while Terbium doped borosilicate and tellurite glasses at 544 nm. The UV/Vis absorption characterization showed dysprosium doped borosilicate glass as having the strongest absorption spectra with several excitation peaks and maximum absorption (λmax) at 350 nm while fluorescence compatibility test for cyclohexane and crude oil identified Dysprosium borosilicate glass and terbium tellurite glass as the optimum taggants showing compatibility with the hydrocarbons.


NKWOADA, A.U. and OFFICER, S. 2016. Novel dysprosium and terbium doped taggants for hydrocarbon indentification. Journal of advanced chemical sciences [online], 2(3), pages 296-298. Available from:

Journal Article Type Article
Acceptance Date May 23, 2016
Online Publication Date Jun 8, 2016
Publication Date Sep 30, 2016
Deposit Date Jan 30, 2020
Publicly Available Date Jan 30, 2020
Journal Journal of advanced chemical sciences
Print ISSN 2394-5311
Publisher JACS
Peer Reviewed Peer Reviewed
Volume 2
Issue 3
Pages 296-298
Keywords Fluorescence; Terbium; Dysprosium; Tellurite
Public URL
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