发明名称 |
Method for rapid analysis of gold |
摘要 |
A method to determine a concentration of a target element in a sample is provide. The method comprises (i) positioning a sample containing a target element with respect to a reference material containing a reference element, (ii) simultaneously irradiating the sample and the reference material with Bremsstrahlung X-rays to thereby produce activated nuclei in the target element and to produce activated nuclei in the reference element, (iii) detecting deactivation gamma-rays' from the irradiated sample and deactivation gamma-rays from the irradiated reference material, (iv) determining a first number of detected deactivation gamma-rays from the irradiated sample and a second number of detected deactivation gamma-rays from the reference material, and (v) determining the concentration of the target element in the sample by first normalising the first number of detected deactivation gamma-rays from the irradiated sample by the second number of detected deactivation gamma-rays from the reference material. The variation of the reference element to target element cross section ratio over a range of electron beam energies is less than a predetermined measurement accuracy. |
申请公布号 |
US9528951(B2) |
申请公布日期 |
2016.12.27 |
申请号 |
US201415104279 |
申请日期 |
2014.12.16 |
申请人 |
COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION |
发明人 |
Tickner James;Roach Greg |
分类号 |
G01N23/221;G01N23/22;A61B6/00 |
主分类号 |
G01N23/221 |
代理机构 |
Nixon & Vanderhye P.C. |
代理人 |
Nixon & Vanderhye P.C. |
主权项 |
1. A method to determine a concentration of a target element in a sample, the method comprising:
(i) positioning a sample containing a target element with respect to a reference material containing a reference element, where the target element is distinct from the reference element; (ii) simultaneously irradiating the sample and the reference material with Bremsstrahlung X-rays to thereby produce activated nuclei in the target element and to produce activated nuclei in the reference element; (iii) detecting deactivation gamma-rays from the irradiated sample and deactivation gamma-rays from the irradiated reference material; (iv) determining a first number of detected deactivation gamma-rays from the irradiated sample and a second number of detected deactivation gamma-rays from the reference material; and (v) determining the concentration of the target element in the sample by first normalising the first number of detected deactivation gamma-rays from the irradiated sample by the second number of detected deactivation gamma-rays from the reference material; (vi) wherein the variation of the reference element to target element cross section ratio over a range of electron beam energies is less than a predetermined measurement accuracy. |
地址 |
Campbell, Australian Capital Territory unknown |