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Ingestion Dose Conversion Factors

The following is a listing of ingestion dose conversion factors for radionuclides that are frequently encountered. The values shown below are in units of "millirem per microcurie ingested", and are used to convert estimates of intake into committed effective dose equivalent. Following each conversion factor is a notation showing the fractional absorption, f1, from the GI tract into the blood stream (isotopes that are completely absorbed have an f1 value of 1.)  These f1 values appear in Federal Guidance Report No. 11, along with the dose conversion factors.

Actinium

Aluminum

Americium

Barium

Beryllium

Bismuth

Cadmium

Calcium

Californium

Carbon

Cerium

Cesium

Chlorine

Cobalt

Copper

Curium

Europium

Fluorine

Gallium

Gold

Hydrogen

Indium

Iodine

Iridium

Iron

Lead

Magnesium

Manganese

Molybdenum

Neptunium

Nickel

Niobium

Osmium

Phosphorus

Potassium

Plutonium

Polonium

Protactinium

Radium

Rubidium

Ruthenium

Silicon

Silver

Sodium

Strontium

Sulfur

Technetium

Thallium

Thorium

Uranium

Yttrium

Zinc

Zirconium

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