Methods for radioactivity measurements in drinking water using gamma spectrometry.

In this study, three methods to measure activity concentrations of radionuclides through high resolution gamma spectrometry are developed, optimized, and tested on drinking water samples. Two pre-concentration methods (partial evaporation and ion-exchange resins) were optimized for accuracy, precision, detection limits, costs, preparation, and measurements times. A new sampling method for Rn was designed and optimized to directly sample water from the tap, reducing and minimizing losses of radon during the sampling.

Human and environmental factors affecting the activity of I and Cs in urban wastewater: A case study.

The analysis of radionuclides content in the waste product of urban wastewater treatment (i.e. sewage sludges) is of great concern for both the safety of workers and in a re-use perspective of the final product.