Inductively coupled plasma-mass-spectrometer with triple quadrupol (ICP-MS-QQQ)

所要求的仪器是具有三重四极杆的电感耦合等离子体质谱仪（ICP-MS-QQQ），用于在超痕量范围内检测和定量化学主要元素和痕量元素，以及用于测定水溶液中的纳米颗粒。为了测定海水中的微量元素，可将仪器与微量元素预富集和富集装置（seaFAST）连接。该器械将替换具有相同功能的类似器械（使用年限13年）。最新一代的ICP-MS仪器提供三重四极杆，即使在具有复杂基质的溶液中也能更好地消除干扰。结合预富集和富集单元，ICP-MS-Triple-Quad可以测定海水中超痕量水平的痕量元素，包括汞。此外，由于三重四极管对干扰进行了强大而有效的补偿，这款最新一代的仪器甚至可以在痕量水平上测定硅、硫和磷等轻元素。单个纳米颗粒的测定也是可能的。所要求的仪器计划安装在不伦瑞克理工大学地球生态研究所的环境地球化学实验室，将用于环境地球化学研究应用领域。在这里，研究重点是在超痕量水平上测定水生系统和土壤中的常量和微量元素。此外，富含DOC的样品中的胶体和附聚物将通过ICP-QQQ-MS与尺寸排阻和离子分离技术相结合进行化学表征。与过去的仪器一样，我们打算继续为植物科学、颗粒科学和表面工程、食品化学和生态化学领域的研究小组提供布伦瑞克工业大学内外的微量元素测量。

The requested instrument is a inductively coupled plasma-mass-spectrometer with triple quadrupol (ICP-MS-QQQ) for detection and quantification of chemical major and trace elements in the ultra-trace range and for the deter¬mination of nano-particles in aqueous solution. For the determination of trace elements in seawater the instruments can be coupled to a trace element pre-enrichment and desalting unit (seaFAST). The instrument will replace a similar device with the same function (age 13 years). ICP-MS instruments of the newest generation offer triple-quadrupol for better elimination of interferences even in solution with complex matrices. Combined with a pre-enrichment and desalting unit ICP-MS-Triple-Quad allows the determination of ultra-trace levels of trace elements in seawater including mercury. Additionally, due to the strong and effective compensation of interferences by triple-quad, this newest instrument generation even allows the determination of light elements such as silicon, sulphur and phosphorous at trace levels. The determination of single nano-particles is also possible. The requested instruments is planned to be installed in the environmental geochemistry lab at Institute of Geoecology at TU-Braunschweig, where it will be used in the field of environmental geochemistry research applications. Here, research emphases are the determination of major- and trace elements in aquatic systems and soils on the ultra-trace level. In addition, colloids and agglomerates in DOC-rich samples will be chemically characterized through coupling the ICP-QQQ-MS with size-exclusion and ion separation techniques. As with the previous instrument in the past, we intent continuing offering trace element meaurements inside and outside TU-Braunschweig for research groups in the field of plant science, particle-science and surface-engineering, food chemistry and ecological chemistry.