RT Journal Article
T1 Exploiting dynamic reaction cell technology for removal of spectral interferences in the assessment of Ag, Cu, Ti, and Zn by inductively coupled plasma mass spectrometry
A1 Suárez-Oubiña, Cristian
A1 Herbello Hermelo, Paloma
A1 Bermejo Barrera, Pilar
A1 Moreda Piñeiro, Antonio
K1 Dynamic-reaction cell
K1 Ammonium reaction gas
K1 Inductively coupled plasma mass spectrometry
K1 Interferences
K1 On-mass approach
K1 Mass shift approach
AB Analytical methods based on dynamic-reaction cell (DRC) technology using ammonia as a reaction gas have been developed for the determination of ultra-trace Ti, Zn, Cu and Ag by inductively coupled plasma mass spectrometry (ICP-MS). Challenging spectral interferences from complex matrices were demonstrated to be overcome by DRC, and several DRC approaches (on-mass and mass-shift) using ammonium (NH3) as a reaction gas were assessed and compared to the standard or “vented” mode analysis. Ammonium cluster ions were generated for Ti, Cu, Zn, and Ag (mass shift approach). The on-mass approach was also explored to take advantage of collisional focusing phenomena. In addition, DRC operating conditions were optimised by modifying NH3 gas flow rate and rejection parameter q (RPq). The optimised conditions were applied to show the usefulness of either on-mass or mass-shift approaches when removing Ca and P interferences. Finally, the sensitivity of all measurement modes was studied and excellent limits of detection (at few ng L−1 levels) were assessed
PB Elsevier
YR 2022
FD 2022
LK http://hdl.handle.net/10347/27893
UL http://hdl.handle.net/10347/27893
LA eng
NO Spectrochimica Acta Part B: Atomic Spectroscopy 187 (2022) 106330. https://doi.org/10.1016/j.sab.2021.106330
NO The authors wish to acknowledge the financial support of the Ministerio de Economía y Competitividad, Gobierno de España (project INNOVANANO, reference RT2018-099222-B-100), and the Xunta de Galicia (Grupo de Referencia Competitiva, grant number ED431C2018/19)
DS Minerva
RD 28 abr 2026