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本文叙述利用60mg月岩样品测定包括14种稀土在内的36种元素的含量。称取20.00mg月岩样品密封于聚乙稀薄膜小袋里,利用原子能研究所游泳池式反应堆的水平孔道,由气动快速辐照装置,对样品、标准和国际标样W-1分别与C1监察器在中子通量为3×10~(12)n·cm~(-2)·s~(-1)处辐照5分钟,冷却5分钟后测定A1、Ti、V、Ca;冷却1小时后测定Dy、Mn;冷却10小时后测定Eu、Na;冷却30小时后测定Sm。将上述的20.00mg样品转移到小铝盒内,称取42.10mg的W-1标样装入小铝盒内与制备好的中、长寿命核素的标准包在一起,在堆的垂直孔道中中子通量为2×10~(13)n·cm~(-2)·s~(-1)处照射20小时;冷却5天、10天和20天后分别测定Na、La、Sm、Ho、Eu、Yb、Hf、Cr、Fe、Sc、Co、Lu和Tb。冷却50天后进行放化分离,然后测定Tm、Ta、Gd、Ce和Zn。第二次照射取月岩样42.10mg,W-1标样64.90mg和制备好的标准,在中子通量为2×10~(13)n·cm~(-2)·s~(-1)处辐照40小时,冷却12小时后取出。样品用1mlHClO_4+2ml
This paper describes the determination of 36 elements including 14 rare earths using 60 mg lunar samples. Weigh 20.00mg moon rock samples sealed in polyethylene film pouch, the use of atomic energy Institute of the horizontal reactor channel, by pneumatic rapid irradiation device, the sample, standard and international standard W-1, respectively C1 monitor After the neutron flux was 3 × 10 ~ (12) n · cm ~ (-2) · s ~ (-1) for 5 minutes, the samples were cooled for 5 minutes and then measured for A1, Ti, V and Ca. Dy and Mn were measured, Eu and Na were measured after cooling for 10 hours, and after cooling for 30 hours, Sm was measured. The above 20.00mg sample was transferred to a small aluminum box, weighed 42.10mg W-1 standard sample into a small aluminum box with the standard preparation of medium and long life nuclides together, in the stack of vertical channels The neutron flux was irradiated at 2 × 10 ~ (13) n · cm ~ (-2) · s ~ (-1) for 20 hours. After cooling for 5 days, 10 days and 20 days, Na, La, Sm, Ho, Eu, Yb, Hf, Cr, Fe, Sc, Co, Lu and Tb. After cooling for 50 days, radiochemical separation was performed, and then Tm, Ta, Gd, Ce and Zn were measured. In the second irradiation, 42.10 mg of rock sample and 64.90 mg of W-1 standard were prepared and the prepared standard was used. The neutron flux of 2 × 10 ~ (13) n · cm ~ (-2) · s ~ (- 1) Department of irradiation 40 hours, 12 hours after cooling removed. Sample with 1mlHClO_4 + 2ml