铍在环境中的作用：不同条件下特定吸附和沉淀研究的见解,Science of the Total Environment
在这项研究中，我们检查了影响 Be 环境行为的因素，特别考虑了从悉尼（澳大利亚）附近的一个遗留放射性废物处理场收集的土壤。沉淀研究表明ICP 标准溶液形成 Be(OH) 2 (无定形)，但 Be(OH) 2 (α)、Be(OH) 2 (β) 和三元 Na/S-Be (III )-OH(s) 固相由 BeSO 4形成解决方案。正如实验室数据和模拟所表明的，Be 的沉淀开始于相对较低的 pH 值和较高的浓度，而不是较低的 Be 浓度。在整个 pH 范围内，Be 吸附曲线分为三个阶段，即 pH 3-6、pH 6-10 和 pH > 10，其中 Be 对土壤的吸附分别为 9-97%、90-97%、和 66-90%，分别。铍的溶解度在 pH > 7 时受到限制，但对土壤的吸附研究表明，在酸性和碱性 pH（pH 5.5 和 8）条件下都有化学吸附，FTIR 和 XPS 分析证实了这一点。在 pH 值为 5.5（与研究地点特别相关）时，Be 的吸附率为 72-95%，其中 77% 和 46% 的 Be 分别被分离的黄腐酸和腐殖酸部分吸附。不可逆的化学吸附机制在较高的 pH 值下由 SOM 控制，以及在较低 pH 值下的金属羟基氧化物。有机和无机组分在田间土壤的中间 pH 值 5.5 下协同影响 Be 的特定化学吸附。
"点击查看英文标题和摘要"
Role of beryllium in the environment: Insights from specific sorption and precipitation studies under different conditions
In this study, we examined factors influencing the environmental behaviour of Be, specifically considering soils collected from a legacy radioactive waste disposal site near Sydney (Australia). The precipitation study showed the formation of Be(OH)2 (amorphous) from ICP standard solution, but a mixture of Be(OH)2 (alpha), Be(OH)2 (beta) and ternary Na/S-Be (ΙΙ)-OH(s) solid phase were formed from BeSO4 solutions. The precipitation of Be started at relatively lower pH at higher concentrations than at the lower Be concentration as indicated by both laboratory data and simulation. Across the pH range, the Be sorption curve was divided into three phases, these being pH 3–6, pH 6–10, and pH > 10, within which sorption of Be with soil was 9–97%, 90–97%, and 66–90%, respectively. Beryllium solubility was limited at pH > 7, but a sorption study with soil showed chemisorption under both acidic and alkaline pH (pH 5.5 and 8) conditions, which was confirmed by FTIR and XPS analysis. At pH 5.5 (specifically relevant to the study site), sorption of Be was 72–95%, in which 77% and 46% Be was respectively sorbed by separated fulvic and humic acid fractions. The irreversible chemisorption mechanism was controlled by SOM at higher pH, and by metal oxyhydroxides at lower pH. Both organic and inorganic components synergistically influence the specific chemisorption of Be at the intermediate pH 5.5 of field soil.