Engineering Research Equipment: Membrane Introduction Mass Spectrometer

小行星9622294 本提案中要求的带有膜引入系统的离子阱质谱仪将专门用于支持环境工程研究。 该仪器将用于几个项目，包括：1）在危险废物预防和补救中杂交白杨树对BTX化合物和甲硫氨酸的吸收; 2）弹药废物的陆地植物补救; 3）用铁金属还原卤化甲烷的脱氯; 4）用环境上可接受的芳香物质刺激BTX生物补救;厌氧多电子受体生物修复技术在地下氯污染治理中的应用。 质谱仪与膜引入取样系统相结合，将能够连续和同时监测水基质中引起环境关切的挥发性成分。 使用注射器进样，该仪器将被用作非挥发性化合物如三硝基甲苯和农药的结构鉴定技术。 从这些实验室实验中获得的信息将应用于现场污染预防和补救情况。 如果成功的话，在拟议设备的帮助下制定的战略有可能通过提供更具成本效益的原位修复技术来节省数百万美元。

9622294 Schnoor The ion-trap mass spectrometer with a membrane introduction system requested in this proposal will be dedicated to support research in environmental engineering. The instrument will be used for several projects, including: 1) Uptake of BETX Compounds and Metabolites by Hybrid Poplar Trees in Hazardous Waste Prevention and Remediation; 2) Terrestrial Phytoremediation of Ammunition Wastes; 3) Reductive Dechlorination of Halogenated Methanes with Iron Metal; 4) Stimulation of BTX Bioremediation by Environmentally Acceptable Aromatic Substances; and 5) Application of Anaerobic and Multiple-Electron-Acceptor Bioremediaton of Chlorinated Subsurface Contamination. Coupled with a membrane introduction sampling system, the mass spectrometer will allow for the continuous and simultaneous monitoring of volatile components of environmental concern in a water matrix. Using syringe injections, the instrument will be used as a structure identification technique for nonvolatile compounds such ass trinitrotoluene and pesticides. The information gained from these laboratory experiments will be applied to field pollution prevention and remediation situations. If successful, the strategies developed with the help of the proposed equipment have the potential to save millions of dollars by offering more cost effective, in-situ site remediation techniques.