Dear Subhashini,

you may get in contact with the people at the links below:

https://www.csiro.au/en/Do-business/Services/Enviro/Isotope-analysis

https://www.ansto.gov.au/research/programs/environment/isotope-tracing-natural-systems

http://www.ga.gov.au/about/facilities/laboratories/organic-geochemistry

http://www.connectedwaters.unsw.edu.au/articles/2013/08/laser-isotope-mass-spectrometry-technology-groundwater-research-australia

Good luck

Thank you Gerhard. I will try.

Cheers

Subhashini

You can try gamma spectroscopy with HPGe detector in low background environment, i.e. a salt mine. Depending of how much radioactivity you have in your samples the measurement might be also feasible in a lead castle.

Thank you for the response. Much appreciated.

Do you have any idea about the laboratory which are equipped with gamma spectroscopy in Australia?

I'm afraid not, is too far from my place

I make Gamma Spectrometry equipment in Sydney, look up https://gammaspectacular.com

No liquid scintillation counters though.

Hi Steven

Thank you for the message. Will send message to you.

Cheers