Bio-absorption filter and phosphorescent scintillation counter - combined as a unit for on-site concn. and measurement of radioactive isotopes

摘要

A phosphorescent scintillation system combined with a bio-absorption filter for concentrating and measuring the quantity of radioisotopes in a water based test sample, is designed for the rapid on site determination of such quantities. A micro-organism is placed in a layer on a fixed transparent porous support while the phosphorescent material is arranged on a second porous support in the immediate vicinity of the first support. The intended micro-organism is yeast or Saccharomyces cerevisiae. The phosphorescent material is zinc sulphide-silver? USE/ADVANTAGE - The system is intended to provide rapid on site measurements in wavy metal contaminated ground water, or soil arising from industry or mine workings. As the process is on site, costly and time consuming laboratory analysis procedures are avoided. Errors arising from transport and cleaning etc. of the samples are avoided.