Exploration of 241Am measurement in fecal samples
- VernacularTitle:粪样中241Am测量方法的探索
- Author:
Weina SONG
1
;
Yunyun YIN
1
;
Aiyun LI
1
;
Chuangao WANG
1
;
Zhiping LUO
1
;
Hongchao PANG
1
Author Information
- Publication Type:Journal Article
- Keywords: Fecal sample; 241Am; Separation and purification; ICP-MS
- From: Chinese Journal of Radiological Health 2022;31(5):542-547
- CountryChina
- Language:Chinese
- Abstract: Objective To preliminarily study and establish a method for measurement of the transuranic nuclide 241Am in fecal samples, and to provide technical support for internal radiation monitoring of staff. Methods Fecal samples were collected with a self-made stool sampler and treated with a self-made carbonization and ashing furnace. DGA resin was used to separate and purify 241Am from fecal samples. With 243Am as the tracer, the orthogonal method was used for condition optimization. Results The optimum conditions for separation and purification were: the acidity of HNO3 added into the column, 6 mol/L; column flow rate, 0.6 mL/min; and the volume of analytical solution,12 mL. The method based on inductively coupled plasma mass spectrometry showed a detection limit of 9.79×10−4 Bq for 241Am in fecal samples, which was satisfactory and feasible. Conclusion This method fills the vacancy of 241Am measurement in fecal samples to some extent, which is of practical significance for internal radiation monitoring and protection for analysts.
