Determination of131I in soil using a liquid anion exchanger and liquid scintillation technique

A simple method for rapid determination of131I in soil is described. The method is based on the specific separation and concentration of radioiodine from the soil extract with a liquid anion exchanger and measuring its radioactivity with liquid scintillation counting. The131I from soil is extracted with aqueous solution of sodium hydroxide. The method permits the determination of131I with a lower limit of detection less than 0.1 Bq/10 g of soil.