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.

1626157CAMACHO，环境中金属物种的发生和化学的卢气对化学，一致性以及化学和环境工程领域提出了研究挑战。元素规格很重要，因为对于许多元素，诸如毒性或营养价值，迁移率和波动率之类的特性取决于环境中存在的元素的物种或化学形式。来自环境工程，化学工程，化学，农业，农业综合企业和环境科学部门的多学科教师组将使用LC-ICP-MS仪器进行研究，教育和外展活动。塔穆克（Tamuk）是少数派服务机构，也是唯一拥有环境工程博士学位的机构。南德克萨斯州的计划。该项目将允许为STEM学生，特别是西班牙裔学生做好准备，并在关键的跨学科环境领域进行高质量和竞争研究的技能。该项目将使Tamuk能够吸引南德克萨斯州其他机构的机构间研究和教育合作，尤其是科珀斯克里斯蒂市的德克萨斯A＆M大学（TAMUCC）和德克萨斯州里奥格兰德分校（UTRGV），因为该地区没有其他机构尚无其他机构用于物种标识和定量和定量和多元素的连字符。该项目将直接影响塔穆克（Tamuk）和南德克萨斯州其他研究/教育机构的西班牙裔学生的研究专业知识。预计，塔穆克（Tamuk）的150多名研究生将在赠款的三年中参与与该工具有关的实验室活动。由于塔穆克（Tamuk）在南德克萨斯州的战略地理位置，因此存在国际和跨学科体验的潜力，这将为未来的全球合作创造更广泛的范围。为此，将促进美国 - 墨西哥边境机构之间的夏季研究交流计划。该项目将因自然和人为原因而在环境系统中经历的金属离子经历的规格反应的知识。该项目分为七个子项目，这些项目将允许在广泛的环境中识别存在有问题的离子物种，并确定如何消除毒性并减轻这些离子物种对环境的影响。次项目的对象是1）确定从锰氧化物修饰的天然沸石（MCZ）上从浅金油地下水中的AS（III）/AS（v）的剂量； 2）在重金属离子存在下，磺胺甲烷（SMN）在粉末状活化碳中进行了相对研究； 3）评估替代无机还原剂，以刺激位于原位恢复矿场上铀（VI）的自养还原和固定； 4）在含量金属和金属含量的化合物中进行元素规范分析，例如钒（V），镍（Ni），汞（Hg/hg（ii）），砷（AS（III）/AS（aS AS（V）），以及硫（S/S/S（s/s（ii）（III）/s（iii）/s（iii）），在petroleum-petroleum-Petroleum-Relemum-Reploleum-Reploleum-Replolem-Replolem-Replolem-Replolem-Replolem-Replyemum-Reply; 5）评估营养叶面喷雾对柑橘产量的影响； 6）评估通过用过氧化氢增强氧化汞的燃烧烟气发射的减少； 7）确定均匀催化剂的原子经济烯烃和炔烃功能化的固定化。 LC-ICP-MS仪器将由次项目使用以1）在MCZ上的添加吸附过程中量化AS（III）向AS（V）物种的转化； 2）将SMN添加到粉末活性碳材料上时，将砷，锑和铜定量； 3）使用无机或有机还原量化铀酰碳酸盐浓度； 4）分析钒（V），镍（Ni），汞（Hg/hg（ii）），砷（AS（iii）/AS（as（v））和硫（s/s（ii）/s（iii）（iii）/s（iii））的硫酸（s/s（ii）/s（iii））的规格，来自来自Eagle Ford Shale的原油和气体凝聚力； 5）测量化学选择的元素，例如Ca，b，cu和Si，这些元素将在叶面喷雾剂上应用于年轻的葡萄柚叶； 6）提供了汞物种的更独特的分离并提高了分析精度，从而使实验时间更好地重现和优化； 7）监测可能催化剂留下的催化剂，从葡萄酒基系固定的反应溶液对同醇 - 丙烯/己烷共聚物或二氧化硅的影响。亚项目的结果将为1）提供一种替代方法，以去除和减轻潜在的健康影响并在德克萨斯州墨西哥湾沿岸的淡水含水层中发现的物种； 2）允许减轻牛和猪极端向环境释放到环境的抗菌SMN药物的环境影响； 3）提供了在德克萨斯州南部的铀原位回收（ISR）地点的地下水恢复过程； 4）允许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南，以适应下里奥格兰德山谷中更好地适应非生物和生物压力的农作物； 6）帮助用过氧化氢实施增强的氧化物，以产生固体种类的汞种类，可以通过从发电厂的洗涤塔中的抽象来清除这些汞； 7）提供对原子经济过程的见解，这些过程不会产生任何废物，因此对于工业应用非常重要。