Environmental Radioactivity Laboratory (LaboRA), University of the Balearic Islands, 07122 Palma de Mallorca, Spain; Sciware Systems, Spin-Off UIB-004, 07193 Bunyola, Spain.
Environmental Radioactivity Laboratory (LaboRA), University of the Balearic Islands, 07122 Palma de Mallorca, Spain.
Talanta. 2019 May 1;196:510-514. doi: 10.1016/j.talanta.2018.12.055. Epub 2018 Dec 22.
Laser-based stereolithography (SLA) 3D printing has been applied to construct a 3D printed device as support for uranium(VI) extraction, using a quaternary ammonium salt in liquid and solid form. As proof of concept, a simple process was carried out to immobilize a selective and commercial resin (TEVA resin), in all the surface area of the non-cured SLA 3D printed device, becoming immobilized after UV photocuring. Besides, a coat of Aliquat®336 covering the surface of the cured SLA 3D printed device was tested. Both 3D printed devices as supported for liquid and solid extractant were characterized. Better results in terms of precision were obtained by using TEVA resin (RSD 2.9%), which was satisfactory optimized, reaching a LOD of 0.03 ng U(VI), and a durability of 10 consecutive extractions, maintaining a recovery of 90% with 5% RSD. The 3D printed device is able to preconcentrate up to a sample volume of 30 mL, without any additional pretreatment. The uranium detection was performed with an ICP-MS. Satisfactorily results were obtained analyzing reference material, e.g. phosphogypsum and water matrices from intercomparison exercises, at a confidence level of 95%.
基于激光的立体光刻（SLA）3D 打印已被应用于构建 3D 打印设备，作为铀（VI）萃取的支撑物，使用液体和固体形式的季铵盐。作为概念验证，进行了一个简单的过程，将一种选择性和商业性树脂（TEVA 树脂）固定在未固化的 SLA 3D 打印设备的所有表面积上，在 UV 光固化后被固定。此外，还测试了涂覆在固化的 SLA 3D 打印设备表面的 Aliquat®336。对作为液体和固体萃取剂支撑物的 3D 打印设备进行了表征。使用 TEVA 树脂（RSD 2.9%）获得了更好的精度结果，经过满意的优化，达到了 0.03ng U(VI)的 LOD，10 次连续萃取的耐用性，回收率为 90%，RSD 为 5%。3D 打印设备能够在无需任何额外预处理的情况下预浓缩高达 30ml 的样品体积。使用 ICP-MS 进行铀检测。在 95%置信水平下，对参考物质（如磷石膏和互相比对实验中的水基质）进行分析，得到了令人满意的结果。
