Determination of fluorine in reference materials by chopped-beam cold neutron prompt gamma-ray activation analysis (CB-CNPGAA)

被引：0
作者：
Paul, Rick L. [1 ]
Chen-Mayer, H. Heather [1 ]
机构：
[1] NIST, Chem Sci Div, 100 Bur Dr, Gaithersburg, MD 20899 USA
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2025年 / 334卷 / 01期
关键词：
Prompt gamma-ray activation analysis; Cold neutrons; Beam chopper; Chopped beam; Reference materials; Fluorine analysis; SCATTERING; STANDARDS; HYDROGEN; BONES; TEA;
D O I：
10.1007/s10967-024-09807-w
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A method is described for determination of fluorine in reference materials by chopped beam cold neutron prompt gamma-ray activation analysis (CB-CNPGAA). The chopper cycle is set to 11 s on/off to match the t1/2 of 20F. To reduce systematic error, the F mass is measured as the ratio to a comparator element, either Ca or Cl. The F mass fraction is then calculated by multiplying this ratio by the mass fraction of the comparator element. The method is used to measure F in SRMs 1486 Bone Meal, 1400 Bone Ash, 1566a Oyster Tissue, and 2695 Fluorine in Vegetation.
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页码：689 / 696
页数：8
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