BRIGE: Online measurement of submicron aerosol composition using AC-CIMS

mcneillbridge奖项通过增加工程技术研究人员的多样性来保持全球竞争力，这些研究人员在职业生涯的早期就开始了研究项目。bridge奖通过增加工程专业毕业生的数量，提高女性和少数族裔在工程领域的代表性，以及了解如何改善工程专业学生的招聘和保留，进一步扩大工程研究人员的参与。该bridge项目将研究快速响应、高灵敏度的气溶胶颗粒组成测量，用于爆炸物探测、生物气溶胶分析以及大气气溶胶的实验室和现场研究。该项目将开发气溶胶浓缩化学电离质谱法（AC-CIMS），这是一种在线的、专门测量低总气溶胶浓度下气溶胶有机物的技术。主要研究目标是设计、开发和表征一种新型的亚微米气溶胶浓缩入口，该入口等温取样，具有低切割点，并符合CIMS的操作要求。入口将与挥发流管和CIMS仪器连接。ACCIMS的性能将使用实验室产生的气溶胶和环境气溶胶进行表征。AC-CIMS将适用于任何需要在低总气溶胶负荷下检测痕量气溶胶有机物的应用。大气研究中的应用包括在实验室中对低、真实气溶胶浓度下的二次有机气溶胶形成的研究，以及对气溶胶有机物进行特定的、高度时间分辨的现场测量。气溶胶浓缩入口设计将是模块化和通用的，足以与任何现有的CIMS系统或其他具有类似压力要求的分析仪器一起使用。与bridge的目标一致，该项目将为McNeill小组在美国国家科学基金会化学、生物工程、环境和运输系统部门的管辖下开展涉及AC-CIMS技术应用的未来研究奠定基础。研究小组将由三代女性化学工程师组成。该项目将鼓励研究团队的初级成员在毕业后从事化学工程方面的工作，为他们提供在女性导师的指导下参与前沿研究的机会，在同行评审的出版物上发表他们的研究成果，并参加科学会议并展示他们的研究成果。这项bridge补助金将扩大所有工程师的参与和增加机会，包括那些在工程学科中代表性不足的群体。BRIGE拨款还将鼓励私家侦探作为独立调查员积极和有竞争力地从事研究。

EEC-0823847McNeillBRIGE awards maintain global competitiveness by increasing the diversity of ENG researchers, who are initiating research programs early in their careers. BRIGE awards further the broaden participation of engineering researchers by increasing the number of engineering graduates, by improving the representation of women and minorities in engineering, and by understanding how to improve recruitment and retention of engineering students.This BRIGE award will investigate fast-time-response, high-sensitivity measurements of aerosol particle composition, which are in demand for explosives detection, bioaerosol analysis, and laboratory and field studies of atmospheric aerosols. This project will develop Aerosol Concentrating Chemical Ionization Mass Spectrometry (AC-CIMS), a technique for on-line, speciated measurements of aerosol organics at low total aerosol concentrations. The primary research goal is to design, develop, and characterize a novel concentrating inlet for submicron aerosols that samples isothermally, has a low cutpoint, and conforms to the operating requirements of CIMS. The inlet will be interfaced with a volatilization flow tube and a CIMS instrument. The performance of ACCIMS will be characterized using laboratory-generated and ambient aerosols.AC-CIMS will be suitable for any application requiring the detection of trace aerosol organics at low total aerosol loadings. Applications in atmospheric research include laboratory studies of secondary organic aerosol formation at low, realistic aerosol concentrations, as well as speciated, highly time-resolved field measurements of aerosol organics. The aerosol concentrating inlet design will be modular and general enough for use with any existing CIMS system or other analytical instruments with similar pressure requirements. In line with the goals of BRIGE, this project will set the stage for the McNeill group to conduct future research involving applications of the AC-CIMS technique under the purview of the NSF Division of Chemical, Bioengineering, Environmental, and Transport Systems. The research team will consist of three generations of female chemical engineers. This project will encourage the junior members of the research team to pursue careers in chemical engineering after graduation by providing opportunities for them to participate in cutting-edge research under the supervision of a female mentor, publish their work in peer-reviewed publications, and attend and present their work at scientific conferences.This BRIGE grant will broaden the participation of and increase opportunities for all engineers including those from groups underrepresented in the engineering disciplines. This BRIGE grant will also encourage the PI to become actively and competitively engaged in research as an independent investigator.