MRI: Acquisition of a Liquid Chromatograph-Inductively-Coupled Plasma-Mass Spectroscopic Instrument (LC-ICP-MS) for Speciation of Metal Ions in the Environment

MRI：使用液相色谱-电感耦合等离子体质谱仪 (LC-ICP-MS) 对环境中的金属离子形态进行分析

• 批准号: 1626157
• 负责人: Lucy Mar Camacho
• 金额: $ 22.22万
• 依托单位: Texas A&M University-Kingsville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-10-01 至 2020-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1626157&HistoricalAwards=false
• 关键词: MRI; Acquisition; Liquid; Chromatograph; Inductively

1626157Camacho, LucyUnderstanding the occurrences and chemistry of metal species in the environment poses a research challenge to the areas of chemistry, agriculture, and chemical and environmental engineering. Elemental speciation is important because, for many elements, properties such as toxicity or nutrient value, mobility, and volatility, depend on the species or chemical form of the element present in the environment. A multidisciplinary group of faculty members from the Environmental Engineering, Chemical Engineering, Chemistry, Agriculture, Agribusiness, and Environmental Sciences departments at Texas A&M University-Kingsville (TAMUK) will conduct research, educational, and outreach activities using the LC-ICP-MS instrument. TAMUK is a Minority Serving Institution and is the only institution with an Environmental Engineering Ph.D. program in South Texas. This project will allow preparing STEM students, particularly Hispanic, with skills in conducting high quality and competitive research in critical interdisciplinary environmental areas. This project will allow TAMUK to attract inter-institutional research and education collaboration from other institutions in South Texas, particularly Texas A&M University in Corpus Christi (TAMUCC) and the University of Texas Rio Grande Valley (UTRGV), since no other institution in the region possesses a hyphenated instrument for species identification and quantification and multi-element determination. This project will directly impact the research expertise of graduate and undergraduate Hispanic students at TAMUK and other research/educational institutions in South Texas. It is anticipated that more than 150 graduate students at TAMUK will become involved in laboratory-activities related to the instrument over the three years of the grant. Due to the strategic location of TAMUK in South Texas, the potential for international and interdisciplinary experiences for students exists, which will create a broader spectrum for future global collaboration. For this purpose, summer research exchange programs between institutions at the U.S.-México border will be promoted. This project will advance knowledge on speciation reactions that metal ions undergo in environmental systems due to natural and anthropogenic causes. This project is divided in seven sub-projects that will allow identifying problematic ion species present in a broad range of environments, as well as determining how to negate the toxicity and mitigate the effect of these ions species on the environment. The objectives of the sub-projects are to 1) determine the adsorption of As(III)/As(V) from brackish groundwater on manganese oxide-modified natural zeolite (MCZ); 2) conduct a comparative study of the aqueous-phase adsorption of sulfamethazine (SMN) onto powdered activated carbons in the presence of heavy metal ions; 3) evaluate alternative inorganic reductants for stimulating autotrophic reduction and immobilization of uranium (VI) at in-situ recovery mining sites; 4) conduct element speciation analysis of trace metal- and metalloid-containing compounds, such as vanadium (V), nickel (Ni), mercury (Hg/Hg(II)), arsenic (As(III)/As(V)), and sulfur (S/S(II)/S(III)), in petroleum-related materials; 5) conduct an assessment of nutrient foliar spray impact on citrus production; 6) evaluate the reduction of combustion flue gas emissions of mercury by enhanced oxidation with hydrogen peroxide; and 7) determine the immobilization of homogeneous catalysts for atom economical alkene and alkyne functionalization. The LC-ICP-MS instrument will be used by the sub-projects to 1) quantify the transformation of As(III) into As(V) species during the adsorption on MCZ; 2) quantify arsenic, antimony and copper on the adsorption of SMN onto powder activated carbon materials; 3) quantify uranyl-carbonate concentrations by using inorganic or organic reductants; 4) analyze vanadium (V), nickel (Ni), mercury (Hg/Hg(II)), arsenic (As(III)/As(V)), and sulfur (S/S(II)/S(III)) speciation in collected crude oil and gas condensate samples from the Eagle Ford Shale; 5) measure chelated elements, such as Ca, B, Cu, and Si that will be applied as foliar sprays to young grapefruit leaves; 6) provide a more distinct separation of mercury species and increase the analytical precision, resulting in better reproducibility and optimization of experimental runtimes; and 7) monitor possible catalyst leaching effects from reaction solutions immobilized by an alkyl tether on isotactic-propylene/hexane copolymer or silica. Results from the sub-projects will 1) provide an alternative method to remove and mitigate As species that have potential health effects and that have been found in fresh water aquifers in the Gulf Coast of Texas; 2) allow mitigate the environmental impact of antimicrobial SMN drug released to the environmental through excretion by cattle and swine; 3) provide a process for groundwater restoration at uranium in-situ recovery (ISR) sites in South Texas; 4) allow understanding the role that species have on catalyst poisoning mechanisms; 5) allow developing new management practices and guidelines for growing crops that are better adapted to abiotic and biotic stresses in the Lower Rio Grande Valley; 6) help implement enhanced oxidation with hydrogen peroxide to produce soluble species of mercury that can be removed by absorption from scrubbers in power plants; and 7) provide insight into atom economical processes, which do not generate any waste products and are therefore of great importance for industrial applications.

1626157卡马乔，露西了解环境中金属物种的发生和化学性质对化学、农业、化学和环境工程领域提出了研究挑战。元素形态的形成很重要，因为对于许多元素来说，诸如毒性或营养价值、流动性和挥发性等特性取决于元素在环境中存在的种类或化学形式。来自德州农工大学金斯维尔分校（TAMUK）环境工程、化学工程、化学、农业、农业综合企业和环境科学系的多学科教职员工将使用LC-ICP-MS仪器进行研究、教育和推广活动。TAMUK是一所少数民族服务机构，也是南德克萨斯州唯一一所拥有环境工程博士学位的机构。该项目将使STEM学生，特别是西班牙裔学生，具备在关键的跨学科环境领域进行高质量和有竞争力的研究的技能。该项目将使TAMUK能够吸引来自南德克萨斯州其他机构的机构间研究和教育合作，特别是位于科珀斯克里斯蒂的德克萨斯农牧大学（TAMUCC）和德克萨斯大学里约热内卢格兰德谷（UTRGV），因为该地区没有其他机构拥有用于物种鉴定、定量和多元素测定的连号仪器。该项目将直接影响TAMUK和南德克萨斯州其他研究/教育机构的研究生和本科生西班牙裔学生的研究专长。预计在三年的资助期内，TAMUK将有150多名研究生参与与该仪器相关的实验室活动。由于TAMUK位于德克萨斯州南部的战略位置，为学生提供国际和跨学科经验的潜力存在，这将为未来的全球合作创造更广阔的范围。为此目的，将促进美墨边境机构间的夏季研究交流项目。该项目将促进对金属离子在环境系统中由于自然和人为原因而发生的物种形成反应的了解。该项目分为七个子项目，这些子项目将允许识别存在于广泛环境中的问题离子种类，以及确定如何消除毒性并减轻这些离子种类对环境的影响。子项目的目标是：1)确定氧化锰改性天然沸石（MCZ）对半咸淡水中As(III)/As(V)的吸附；2)比较研究了重金属离子存在下粉状活性炭对磺胺乙嗪（SMN）的水相吸附；3)评价可替代无机还原剂在原地回收矿区刺激铀（VI）自养还原和固定化的效果；4)对石油相关材料中的微量金属和含金属化合物，如钒(V)、镍（Ni）、汞（Hg/Hg(II)）、砷(as （III)/ as (V)）和硫(S/S（II)/S(III)）进行元素形态分析；5)评价营养液叶面喷施对柑橘生产的影响；6)评价用过氧化氢加强氧化对汞燃烧烟气排放的减少；7)确定原子经济型烯烃和炔功能化均相催化剂的固定化。子项目将使用LC-ICP-MS仪器来1)量化As（III）在MCZ上吸附过程中向As(V)的转化；2)定量测定砷、锑、铜对粉末活性炭吸附SMN的影响；3)通过使用无机或有机还原剂量化碳酸铀酰浓度；4)分析收集的Eagle Ford页岩原油和凝析油样品中的钒(V)、镍（Ni）、汞（Hg/Hg(II)）、砷(As（III)/As(V)）和硫(S/S（II)/S(III)）形态；5)测量螯合元素，如Ca， B， Cu和Si，这些元素将作为叶面喷雾剂施用于葡萄柚幼叶；6)提供更明确的汞种类分离，提高分析精度，从而获得更好的重现性和优化实验运行时间；7)监测烷基系链固定在等规丙烯/己烷共聚物或二氧化硅上的反应溶液可能的催化剂浸出效果。子项目的结果将1)提供一种替代方法来清除和减轻在德克萨斯州墨西哥湾沿岸的淡水含水层中发现的具有潜在健康影响的砷物种；2)允许减轻抗微生物SMN药物通过牛和猪的排泄释放到环境中的环境影响；3)为南德克萨斯州铀原位回收（ISR）场地的地下水恢复提供了一种方法；4)了解物种在催化剂中毒机制中的作用；5)允许制定新的管理实践和指导方针，以更好地适应下里约热内卢格兰德河谷的非生物和生物压力；6)帮助实施过氧化氢的强化氧化，以产生可溶解的汞，这些汞可通过发电厂洗涤器的吸收去除；7)提供对原子经济过程的见解，这种过程不产生任何废物，因此对工业应用具有重要意义。