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首页> 外文期刊>Environmental Science & Technology >Extraction and Optical Fluorescence Method for the Measurement of Trace Beryllium in Soils
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Extraction and Optical Fluorescence Method for the Measurement of Trace Beryllium in Soils

机译：萃取和荧光光谱法测定土壤中痕量铍。

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Beryllium metal and beryllium oxide are important industrial materials used in a variety of applications in the electronics, nuclear energy, and aerospace industries. These materials are highly toxic, they must be disposed of with care, and exposed workers need to be protected. Recently, a new analytical method was developed that uses dilute ammonium bifluoride for extraction of beryllium and a high quantum yield optical fluorescence reagent to determine trace amounts of beryllium in airborne and surface samples. The sample preparation and analysis procedure was published by both ASTM International and the National Institute for Occupational Safety and Health (NIOSH). The main advantages of this method are its sensitivity, simplicity, use of lower toxicity materials, and low capital costs. Use of the technique for analyzing soils has been initiated to help meet a need at several of the U.S. Department of Energy legacy sites. So far this work has mainly concentrated on developing a dissolution protocol for effectively extracting beryllium from a variety of soils and sediments so that these can be analyzed by optical fluorescence. Certified reference materials (CRM) of crushed rock and soils were analyzed for beryllium content using fluorescence, and results agree quantitatively with reference values.
机译：铍金属和氧化铍是重要的工业材料，可用于电子，核能和航空航天工业的各种应用中。这些材料有剧毒，必须小心处理，并且需要保护裸露的工人。最近，开发了一种新的分析方法，该方法使用稀氟化氢铵萃取铍和高量子产率的光学荧光试剂来测定机载和表面样品中的痕量铍。样品制备和分析程序由ASTM International和国家职业安全与健康研究所（NIOSH）共同发布。该方法的主要优点是灵敏度高，操作简便，使用毒性较低的材料以及较低的投资成本。已经开始使用该技术分析土壤，以帮助满足美国能源部的一些旧址的需求。到目前为止，这项工作主要集中在开发一种溶解方案，以有效地从多种土壤和沉积物中提取铍，以便可以通过光学荧光进行分析。使用荧光分析了碎石和土壤的认证参考材料（CRM）的铍含量，其结果与参考值定量一致。

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