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Gravimetric deposition of microliter drops with radiometric confirmation
Published
Author(s)
Denis E. Bergeron, Richard Essex, Svetlana Nour, Gordon A. Shaw, R. Michael Verkouteren, Ryan P. Fitzgerald
Abstract
A manual gravimetric dispensing technique is demonstrated using a micropipettor modified for use with removeable microcapillaries. Liquid scintillation sources were prepared from a well-characterized 241Am reference solution, providing a radiometric check of dispensed masses. Further experiments confirmed controlled dispensing of drops onto gold foils with losses ≤ 0.34(4) % of the total drop activity. A detailed measurement equation for the weighing technique, including the corrections for evaporation, is presented with a full accounting of associated uncertainties.
Bergeron, D.
, Essex, R.
, Nour, S.
, Shaw, G.
, Verkouteren, R.
and Fitzgerald, R.
(2023),
Gravimetric deposition of microliter drops with radiometric confirmation, Applied Radiation and Isotopes, [online], https://doi.org/10.1016/j.apradiso.2023.111025, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=936817
(Accessed October 8, 2025)