Nano-particulate pressed powder tablets for LA-ICP-MS
Nano-particulate pressed powder tablets for LA-ICP-MS
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DOI：
10.1039/c4ja00007b
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发表时间：
2014-01-01
影响因子：
3.4
通讯作者：
Mueller, Samuel
中科院分区：
文献类型：
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作者：
Garbe-Schoenberg, Dieter;Mueller, Samuel
我们开发了一种先进的方法，用于生产未稀释的纳米颗粒压制粉末片剂，而无需添加任何粘合剂，使用高功率行星式球磨机和玛瑙工具在水悬浮液中应用湿磨方案。该方法进行了测试和优化的研磨时间，球的大小，球粉比和水粉比使用粉碎的dibrillDR-N含有丰富的锆石晶体，特别是难以打破由研磨和酸消化方法。新方法生产的纳米颗粒粉末的典型粒度d（50）< 1.5 μ m，使我们能够形成具有优异内聚力和均匀性的压制粉末片剂，适用于激光烧蚀显微分析。将优化的研磨方案应用于覆盖广泛岩石类型的其他天然岩石CRM（BHVO-2、JGb-1、UB-N、AC-E、GA）的选择，并通过LA-ICPMS分析形成的粉末片。精密度在相同范围内，
We developed an advanced method for producing undiluted nano-particulate pressed powder tablets without addition of any binder applying wet-milling protocols in aqueous suspension using a high power planetary ball mill and agate tools. The method was tested and optimized for the milling time, ball size, ball-to-powder ratio and water-to-powder ratio using pulverized diorite DR-N containing abundant zircon crystals that are especially difficult to break down by both milling and acid-digestion methods. The new method produces nano-particulate powders with typical grain size d(50) < 1.5 mu m allowing us to form pressed powder tablets with excellent cohesion and homogeneity suitable for laser ablation micro-analysis. The optimized milling protocol was applied to a selection of other natural rock CRMs (BHVO-2, JGb-1, UB-N, AC-E, GA) covering a wide range of rock types, and formed powder tablets were analyzed by LA-ICPMS. Precision was found to be in the same range of