Investigation and assessment of natural radioactivity in commercial animal feeds in Texas.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess
; 41(1): 33-44, 2024 Jan.
Article
em En
| MEDLINE
| ID: mdl-38039334
ABSTRACT
Commercial animal feed in Texas was characterized by determining natural gamma emitters including 40K,137Cs, and Uranium (235U and 238U) and Thorium (232Th) series to obtain basic radioactivity values. The measured activity concentration of natural radionuclides in animal feed was low enough for safe consumption by animal and largely depended on the type of animal feed.40K was the predominant radionuclide showing the highest activity concentration in animal feed. The radioactivity concentration of 214 Bi and 214Pb in 238U decay series was 1.39 and 1.33 Bq/kg in corn, respectively, lower than in other animal feed types. On the other hand, the vitamin/mineral mix samples showed higher concentrations of 214 Bi (9.04 Bq/kg) and 214Pb (10.19 Bq/kg). Beef cattle feed, poultry feed, and vitamin/mineral mix exhibited higher activity concentration of 228Ac and 212Pb in 232Th decay series. Gamma radionuclides appeared to be highly and significantly correlated within each decay series. 235U was present at low levels in all feed samples while the anthropogenic radionuclide of 137Cs was not detected irrespective of the type of animal feed. This study highlights an importance of establishing a current baseline of radioactivity concentration in animal feed in Texas in which the largest animal feed consumption in the US exists.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radioatividade
/
Poluentes Radioativos do Solo
Limite:
Animals
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Food Addit Contam Part A Chem Anal Control Expo Risk Assess
Assunto da revista:
CIENCIAS DA NUTRICAO
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Estados Unidos