Here are some comments
A) The typical detection limits with type of instrument and reference may please be provided. As the whole body counters are of various geometry, make, detectors and details.
B) Retention time with reference of all the discussed radio-nuclides may please be given in detail in each section separately as an graph.
C) Particle size may please be included (if possible) for the discussed of the nuclides and default values for utilities in absence of the information.
One reference may please be added as; S. RamKumar, V. Santanakrishanan, S. Rajaram, P. M. Ravi, Assessment of Internal Exposure and detection of biological half-life of Cs-137 using whole body counting and Bioassay techniques, Proceeding NSRP-19, pp. 358-361, Dec. 12-14, Mamallapuram, Tamil Nadu, India. The result shows that Cs-137 has biological half-life is 102 day for intake range of 8.4-8.8 kBq.