An experimental study of the solubility and speciation of thorium in chloride-bearing aqueous solutions at temperatures up to 250?°C

H. Nisbet; A. Migdisov; H. Xu; X. Guo; V. van Hinsberg; A.E. Williams-Jones; H. Boukhalfa; R. Roback

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An experimental study of the solubility and speciation of thorium in chloride-bearing aqueous solutions at temperatures up to 250?°C

机译：含氯含水溶液在高达250Ω°C的温度下氯化物水溶液中溶解度和物质的实验研究

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The solubility and speciation of Th in Cl-bearing solutions saturated in ThO2was investigated experimentally at 150, 175, 200, 225 and 250?°C, and saturated water vapor pressure. At these experimental conditions (pH25°C?

机译：Th饱和溶液中Th的溶解度和形式在Tho2Was中饱和在实验中在150,175,225和250℃和饱和水蒸气压力下进行实验研究。在这些实验条件下（pH25℃？<β3.8，mnAcl？<β2.5），二氯络合络合是微不足道的，并且通过水解控制Th的溶解度。溶液中的两个主要物种被鉴定为Th（OH）22 +和Th（OH）4°并通过反应组22℃（OH）22 + Andth4 ++ 4OH-α（OH）40形成。确定第一反应的形成常数的对数为23.91〜±0.05,20.79？±0.05和25.85？±0.05，分别为175,225和250？°C，和42.18？±0.06,43.50？±0.07,43.17？±0.08和43.74？±0.11在相同温度下的第二反应。形成常数不能可靠地确定150°C。我们的形成常数为25Ω°C的外涂层与颈部和金（2001）和Ekberg等人的25°C测定的值非常一致。（2000）。对于由梭钛矿（THO2）缓冲的天然系统，在我们的研究中确定的溶解度可能最小，因为额外配体的存在会导致更高的溶解度。

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《Geochimica et Cosmochimica Acta: Journal of the Geochemical Society and the Meteoritical Society》 |2018年第2018期|共11页
作者
H. Nisbet; A. Migdisov; H. Xu; X. Guo; V. van Hinsberg; A.E. Williams-Jones; H. Boukhalfa; R. Roback;
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作者单位

Earth and Environmental Sciences Division Los Alamos National Laboratory;

Earth and Environmental Sciences Division Los Alamos National Laboratory;

Earth and Environmental Sciences Division Los Alamos National Laboratory;

Earth and Environmental Sciences Division Los Alamos National Laboratory;

Department of Earth and Planetary Sciences McGill University;

Department of Earth and Planetary Sciences McGill University;

Earth and Environmental Sciences Division Los Alamos National Laboratory;

Earth and Environmental Sciences Division Los Alamos National Laboratory;

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原文格式 PDF
正文语种 eng
中图分类地球化学;天体化学;
关键词
Thorium; Solubility; Complexation; Thermodynamics; Elevated temperature;

机译：钍;溶解度;络合;热力学;升高的温度;

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1. An experimental study of the solubility and speciation of thorium in chloride-bearing aqueous solutions at temperatures up to 250?°C [J] . H. Nisbet, A. Migdisov, H. Xu, Geochimica et Cosmochimica Acta: Journal of the Geochemical Society and the Meteoritical Society . 2018,第期

机译：含氯含水溶液在高达250Ω°C的温度下氯化物水溶液中溶解度和物质的实验研究
2. Uranyl-chloride speciation and uranium transport in hydrothermal brines: Comment on Migdisov et al. (2018) "A spectroscopic study of uranyl speciation in chloride-bearing solutions at temperatures up to 250 degrees C", Geochim. Cosmochim. Acta 222, 130-145 [J] . Dargent M., Dubessy J., Bazarkina E. F., Geochimica et Cosmochimica Acta: Journal of the Geochemical Society and the Meteoritical Society . 2018,第期

机译：氯化铀醛盐水和水热带铀的转运：关于MIGDISOV等人的评论。（2018）“高达250摄氏度的氯化物溶液中铀酰物质的光谱研究”Geochim“。 cosmochim。 Acta 222,130-145
3. A spectroscopic study of uranyl speciation in chloride-bearing solutions at temperatures up to 250 degrees C [J] . Migdisov A. A., Boukhalfa H., Timofeev A., Geochimica et Cosmochimica Acta: Journal of the Geochemical Society and the Meteoritical Society . 2018,第期

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7. An experimental study of the solubility and speciation of thorium in chloride-bearing aqueous solutions at temperatures up to 250 °C [O] . H. Nisbet, A. Migdisov, H. Xu, 2018

机译：含氯化物水溶液在高达250°C的温度下氯化物水溶液中的溶解度和形态的实验研究
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An experimental study of the solubility and speciation of thorium in chloride-bearing aqueous solutions at temperatures up to 250?°C

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