Radionuclide Sorption & Transport Researcher

National University of Singapore; Singapore; On-site; SGD 60,000 - 100,000; Full time

Job summary

National University of Singapore invites applications for a radiochemistry-focused research position. The successful candidate will join the Radiochemistry team to investigate Cs retention in cementitious barriers, bridging fundamental sorption science with barrier-performance assessment.

The role involves designing column experiments, analyzing breakthrough, and developing trace-level analytical methods. Appointment as Research Fellow, Research Associate, or Research Assistant will depend on

Qualifications

• PhD, MSc or BSc in Radiochemistry, Environmental/Geochemistry, Chemical or Civil/Environmental Engineering, Materials Science or closely related field.
• Experience with sorption or contaminant-transport experiments, including flow-through/column methods and breakthrough-curve analysis.
• Strong grounding in distribution coefficients, retardation, and dynamic (kinetic) sorption concepts.
• Hands-on proficiency with trace analytical instrumentation and QA/QC at low concentrations.
• Experience in radiochemistry-related analysis/measurement techniques.

Responsibilities

• Design and execute dynamic column experiments to characterise Cs transport through concrete or cementitious media.
• Determine and interpret breakthrough behaviour and operational retention capacity.
• Calculate distribution parameters and compare with thermodynamic constants.
• Develop and apply trace-level analytical methods (e.g., ICP-MS/OES) with rigorous QA/QC.
• Model contaminant transport using reactive-transport or breakthrough-curve frameworks.
• Characterise materials (porosity, mineralogy, surface chemistry) to link sorption to cementitious matrices.
• Co-author publications, technical reports, and support grants and proposals.
• Draft procurement and routine-lab administration tasks.

Skills

Sorption experiments

Column/flow-through methods

Breakthrough analysis

Reactive-transport modelling

Trace analytical techniques

QA/QC at low concentrations

Data interpretation

Education

PhD, MSc or BSc in Radiochemistry or related field

Tools

ICP-MS

ICP-OES

Job description

National University of Singapore invites applications for a radiochemistry-focused research position. The successful candidate will join the Radiochemistry team to investigate Cs retention in cementitious barriers, bridging fundamental sorption science with barrier-performance assessment.

The role involves designing column experiments, analyzing breakthrough, and developing trace-level analytical methods. Appointment as Research Fellow, Research Associate, or Research Assistant will depend on