Gross beta determination in drinking water using scintillating fiber array detector.
Appl Radiat Isot
; 137: 161-166, 2018 Jul.
Article
em En
| MEDLINE
| ID: mdl-29649685
ABSTRACT
A scintillating fiber array detector for measuring gross beta counting is developed to monitor the real-time radioactivity in drinking water. The detector, placed in a stainless-steel tank, consists of 1096 scintillating fibers, both sides of which are connected to a photomultiplier tube. The detector parameters, including working voltage, background counting rate and stability, are tested, and the detection efficiency is calibrated using standard potassium chloride solution. Water samples are measured with the detector and the results are compared with those by evaporation method. The results show consistency with those by evaporation method. The background counting rate of the detector is 38.131⯱â¯0.005â¯cps, and the detection efficiency for ß particles is 0.37⯱â¯0.01â¯cps/(Bq/l). The MDAC of this system can be less than 1.0â¯Bq/l for ß particles in 120â¯min without pre-concentration.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Contagem de Cintilação
/
Poluentes Radioativos da Água
/
Água Potável
/
Monitoramento de Radiação
Limite:
Humans
Idioma:
En
Revista:
Appl Radiat Isot
Assunto da revista:
MEDICINA NUCLEAR
/
SAUDE AMBIENTAL
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
China