A sequential injection method for radium determination in environmental samples
Journal Article
·
· Radioactivity and Radiochemistry
OSTI ID:20000121
The authors have developed a semiautomatic procedure for determination of {sup 226}Ra in environmental samples. The methodology is based upon automatic isotope separation and preconcentration using a sequential injection procedure. Once the sample to be analyzed has been prepared, its {sup 226}Ra concentration is obtained by means of a low background proportional counter. Before the series reaches the equilibrium the determination can be carried out simultaneously for several samples by using a multiple-sample proportional counter, or consecutively with a simple counter if the function of activity vs. time is known. By using an autosampler, a sampling rate of 3 h{sup {minus}1} with a 40-mL initial sample volume is achieved. This is an important improvement regarding the non-automatic method (0.5 h{sup {minus}1}). The LLD of the procedure is 0.012 Bq with a relative standard deviation of 6.9% (number of samples = 4) for a {sup 226}Ra activity of 1.0 Bq/L.
- Research Organization:
- Univ. de les Illes Balears, Palma de Mallorca (ES)
- OSTI ID:
- 20000121
- Journal Information:
- Radioactivity and Radiochemistry, Journal Name: Radioactivity and Radiochemistry Journal Issue: 2 Vol. 10; ISSN 1045-845X; ISSN RARAE6
- Country of Publication:
- United States
- Language:
- English
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