Graphite furnace atomic absorption spectrophotometer

石墨炉原子吸收分光光度计

• 批准号: 346038-2007
• 负责人: GalvezCloutier, Rosa
• 金额: $ 7.35万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=325706
• 关键词: Graphite; furnace; atomic; absorption; spectrophotometer

GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROPHOTOMETER (AAS-GF). Industrial, commercial and diffuse agricultural wastes have contributed through various pathways, to the contamination of sediments and soils in lands, basins, ports or lakes. Most sites contain Heavy metals (HM = Pb, Zn, Cd, Cr, and Ni) at trace or higher concentrations.  Metals are inherently persistent; they are neither created nor destroyed by anthropogenic or biological processes, although they may undergo various speciation changes. De-icing salts in highways runoff carrying large amounts of alkaline metals (Na, and Ca) need our attention and are being investigated. In Canada de-icing salts are used in large quantities. Na and Ca find their way to water bodies, disrupting chemical equilibrium and increasing toxicity. The various research projects being conducted by Laval University researchers need metal analysis at trace (ug/L) and higher concentration levels (ppm). In addition to the analytical needs associated to my research program other joint research projects are conducted with professors at Laval University. With Locat et al. we study the salinity influence on heavy metal speciation and migration within Saguenay Fjord sediments. With Locat and Leroeuil we work on the evaluation of the performance of a calcite liner in terms of the retention of heavy metals. Lessard studies the biological degradation of waste waters in activated sludge process and in biofilters. In collaboration with Konrad we study the impact of salts in soil pore water chemistry and resulting geotechnical changes. Research in concrete conducted by Marchand and collaborators aim to study the influence of deicing salts in the durability of concrete structures. AAS-GF is the recommended technique for metal analysis and will increase the analytical capabilities of our environmental lab. This will have a big impact in the training of highly qualified students and personnel.

石墨炉原子吸收分光光度计 (AAS-GF)。工业、商业和分散的农业废物通过各种途径污染了土地、盆地、港口或湖泊中的沉积物和土壤。大多数地点都含有痕量或更高浓度的重金属（HM = Pb、Zn、Cd、Cr 和 Ni）。  金属本质上具有持久性；尽管它们可能经历各种形态变化，但它们既不是由人为或生物过程产生或破坏的。高速公路径流中含有大量碱金属（钠和钙）的除冰盐需要引起我们的关注并正在进行研究。在加拿大，大量使用除冰盐。钠和钙进入水体，破坏化学平衡并增加毒性。拉瓦尔大学研究人员正在进行的各种研究项目需要痕量 (ug/L) 和更高浓度水平 (ppm) 的金属分析。除了与我的研究计划相关的分析需求之外，其他联合研究项目也是与拉瓦尔大学的教授进行的。与 Locat 等人。我们研究盐度对萨格奈峡湾沉积物内重金属形态和迁移的影响。我们与 Locat 和 Leroeuil 一起评估方解石衬垫在重金属截留方面的性能。 Lessard 研究活性污泥法和生物过滤器中废水的生物降解。我们与康拉德合作研究盐对土壤孔隙水化学的影响以及由此产生的岩土变化。 Marchand 及其合作者进行的混凝土研究旨在研究除冰盐对混凝土结构耐久性的影响。 AAS-GF 是推荐的金属分析技术，将提高我们环境实验室的分析能力。这将对高素质学生和人才的培养产生重大影响。