首页> 外文会议>Advances in X-ray analysis (ICDD2001) >QUANTIFICATION OF GALLIUM IN DRIED RESIDUE SAMPLES BY XRF: AN IMPROVED SAMPLE PREPARATION METHOD FOR ANALYZING PLUTONIUM METAL
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QUANTIFICATION OF GALLIUM IN DRIED RESIDUE SAMPLES BY XRF: AN IMPROVED SAMPLE PREPARATION METHOD FOR ANALYZING PLUTONIUM METAL

机译:XRF定量分析干燥残留样品中的镓:分析P金属的改进样品制备方法

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A novel XRF sample preparation method was investigated to quantify the concentration of gallium in plutonium metal and minimize the possibility of contaminating the instrument with radioactive material. To prepare homogenous specimens and to add an internal standard, the plutonium must first be dissolved. The currently established method then entails removing the plutonium by chromatography and analyzing the gallium remaining in solution. In the work presented here, plutonium solution aliquots containing zinc as an internal standard were cast onto Mylar, dried, and analyzed by XRF. Aqueous standards containing gallium and zinc were first cast as dried residues, and these residue standards were analyzed and calibrated. More recently aqueous standards containing plutonium, gallium, and zinc were prepared, cast as dried spots, and calibrated. Very linear calibrations were obtained for both sets of standards when zinc was used as the internal standard (RMS values ≤1% of the standards concentration range). Hence, this dried residue process appears very promising for quantifying gallium in plutonium metal.
机译:研究了一种新颖的XRF样品制备方法,以量化p金属中镓的浓度,并最大程度地降低放射性物质污染仪器的可能性。为了制备均匀的样品并添加内标,必须首先溶解the。然后,当前建立的方法需要通过色谱法除去and并分析溶液中残留的镓。在此处介绍的工作中,将含锌作为内标的p溶液等分试样浇铸在聚酯薄膜上,干燥并通过XRF分析。首先将含镓和锌的水标准品浇铸为干燥残留物,然后对这些残留物标准品进行分析和校准。最近,制备了含有p,镓和锌的水性标准液,将其浇铸成干燥斑点并进行校准。当使用锌作为内标物时,两组标准品都获得了非常线性的校准(RMS值≤标准品浓度范围的1%)。因此,这种干燥的残留物工艺对于定量p金属中的镓似乎非常有前途。

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