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Method and apparatus for determining .beta.-ray emitters

  • US 5,449,921 A
  • Filed: 12/30/1993
  • Issued: 09/12/1995
  • Est. Priority Date: 10/13/1993
  • Status: Expired due to Fees
First Claim
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1. A method of determining β

  • -ray emitters, comprising the steps of;

    applying solution samples onto a number of flat bottomed wells formed in a microplate and interconnected with a plurality of shallow vent channels;

    drying said solution samples to prepare samples to be determined;

    facing a flat radiation recording plate using the photo-stimulated luminescence to said microplate having said samples to be determined in said wells through one of a thin plastic plate and a spacer having a number of openings formed by cutting off the areas corresponding to the wells;

    accommodating the resulting assembly of said microplate, said one of said thin plastic plate and said spacer and said radiation recording plate into a sealable exposure container;

    evacuating said exposure container for a prescribed time and permitting said radiation recording plate to record the radiation emitted from said samples for a prescribed time; and

    determining the radioactivity in said samples from the radiation recording plate.

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