By
. ICRP
Description
In March 1987 the International Commission on Radiological Protection established a Task Group of Committee 2 "to evaluate dose per unit
intake for members of the public". In this, the second of two reports given by the Task Group, ingestion dose coefficients are given
for isotopes of sulphur, cobalt, nickel, zinc, molybdenum, technetium, silver, tellurium and polonium using the new tissue weighting
factors (wT ) given by the Commission in its 1990 Recommendations. Revised ingestion dose coefficients are also included for the radioisotopes
given in Part 1 using the new wT values. In addition, ingestion dose coefficients are given for further radioisotopes. A generic model
for the biokinetics of lead and the alkaline earths strontium, barium and radium has been introduced for calculating ingestion dose coefficients
for radioisotopes of these elements. This model has been applied to the recalculation of the ingestion dose coefficients for 90 Sr, the
only strontium isotope considered in Part 1. The ICRP has now given new wT values for the urinary bladder and colon, and new information
has become available on the biokinetics of plutonium, americium and neptunium in humans. As a result the Task Group considered it appropriate
to revise the biokinetic models for these elements given in Part 1.
Included in series
International Commission on Radiological Protection
Audience:
For regulatory and advisory agencies at regional, national and international levels; management bodies with responsibilities for radiological
protection; professional staff used as advisers; and individuals, such as radiologists, who have to make decisions about the use of ionising
radiation.
