Study on complexation of palladium with thiourea-based ligands and its determination in simulated high-level liquid waste using solid phase extraction-electrospray mass spectrometry

ESI–MS was used to investigate the complexation of Pd(II) with thiourea based ligands such as thiourea (TU), N -benzoylthiourea (BTU), N , N -diethyl N ′-benzoylthiourea (DEBT) in gas phase. Experimental parameters like quadrupole ion energy and collision energy were optimized for acquiring the spec...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2018-11, Vol.318 (2), p.1249-1259
Main Authors: Telmore, Vijay M., Kumar, Pranaw, Jaison, P. G.
Format: Article
Language:English
Subjects:
Chelation
Chemistry
Chemistry and Materials Science
Comparative analysis
Complexation
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Ions
Level (quantity)
Ligands
Mass spectrometry
Nuclear Chemistry
Nuclear energy
Nuclear Physics
Palladium
Physical Chemistry
Quadrupoles
Solid phases
Thioureas
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Summary:ESI–MS was used to investigate the complexation of Pd(II) with thiourea based ligands such as thiourea (TU), N -benzoylthiourea (BTU), N , N -diethyl N ′-benzoylthiourea (DEBT) in gas phase. Experimental parameters like quadrupole ion energy and collision energy were optimized for acquiring the spectra of Pd complexes with TU, BTU, and DEBT. Tandem mass spectrometric ( ms/ms ) studies were carried out to investigate the relative stability of various Pd species in the gas phase. Studies showed that DEBT forms a predominately ML 2 type complex and hence is a better chelating agent for ESI–MS determination of Pd compared to TU and BTU. Based on these studies, an automated solid phase extraction method was developed for separation of Pd using DEBT, followed by its determination using ESI–MS. Developed method was used for determination of Pd in simulated high level liquid waste.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-018-6165-x