Occupational Intakes of Radionuclides Part 1 - ICRP
Occupational Intakes of Radionuclides Part 1 - ICRP
Occupational Intakes of Radionuclides Part 1 - ICRP
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DRAFT REPORT FOR CONSULTATION<br />
7 DATA PROVIDED FOR ELEMENTS AND RADIOISOTOPES<br />
7.1 Introduction<br />
(400) This Chapter describes the types <strong>of</strong> information provided in subsequent<br />
reports in this series for individual elements and their radioisotopes.<br />
(401) The elements included in <strong>Part</strong> 2 are: Hydrogen (H), Carbon ( C), Phosphorus<br />
(P), Sulphur (S), Calcium (Ca), Iron (Fe), Cobalt (Co), Zinc (Zn), Strontium (Sr),<br />
Yttrium (Y), Zirconium (Zr), Niobium (Nb), Ruthenium (Ru), Antimony (Sb),<br />
Tellurium (Te), Iodine (I), Caesium (Cs), Barium (Ba), Iridium (Ir), Lead (Pb),<br />
Bismuth (Bi), Polonium (Po), Radon (Rn), Radium (Ra), Thorium (Th) and Uranium<br />
(U). <strong>Part</strong> 3 will include elements in the lanthanide series, Actinium (Ac), Protactinium<br />
(Pa) and transuranic elements. <strong>Part</strong> 4 will include Fluorine (F), Sodium (Na),<br />
Magnesium (Mg), Potassium (K), Manganese (Mn), Nickel (Ni), Selenium (Se),<br />
Molybdenum (Mo), Technetium (Tc) and Silver (Ag).<br />
(402) Each element section provides information on chemical forms encountered in<br />
the workplace; principal radioisotopes, their physical half-lives and decay modes;<br />
reviews <strong>of</strong> data on inhalation, ingestion and systemic biokinetics; the structure and<br />
parameter values for the systemic biokinetic model; and information on the<br />
interpretation <strong>of</strong> individual monitoring data. Each section includes tables <strong>of</strong>:<br />
Dose coefficients (committed effective dose, Sv, per Bq intake) for inhalation<br />
<strong>of</strong> 5 µm AMAD aerosols with the default absorption Types appropriate for the<br />
element, for all relevant radioisotopes;<br />
Principal emissions <strong>of</strong> selected radioisotopes;<br />
Measurement techniques, detection limits typically achieved in a practical<br />
monitoring programme, and improved detection limits that could be achieved<br />
by suitable choice <strong>of</strong> measurement parameter values (e.g. sample and<br />
background count times), for selected radioisotopes;<br />
Committed effective dose (Sv) per unit measurement (Bq) at various times<br />
after an acute intake by inhalation <strong>of</strong> a 5 µm AMAD aerosol with the default<br />
absorption Types appropriate for the element, for selected radioisotopes;<br />
Bioassay data (i.e. whole body and/or organ retention, and daily urinary and<br />
faecal excretion, Bq per Bq intake), at various times after an acute intake by<br />
inhalation <strong>of</strong> a 5 µm AMAD aerosol with the default absorption Types<br />
appropriate for the element;<br />
Equilibrium values <strong>of</strong> bioassay quantities for continuous chronic intake <strong>of</strong><br />
selected radioisotopes.<br />
(403) Bioassay data are also presented graphically.<br />
(404) In cases for which sufficient information is available (principally for actinide<br />
elements), lung absorption is specified for different chemical forms and dose<br />
coefficients and bioassay data are calculated accordingly.<br />
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