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，商业和扩散的农业废物通过各种途径做出了贡献，对土地，贝斯，港口或湖泊中沉积物和土壤的污染造成了贡献。大多数位点在痕量或更高浓度下包含重金属（HM = Pb，Zn，Cd，Cr和Ni）。金属本质上是持续的。它们要么是由人为或生物学过程创建或破坏的，尽管它们可能会经历各种规格的变化。载有大量合金金属（NA和CA）的高速公路径流的销售需要我们的注意并正在接受调查。在加拿大，销售大量使用。 NA和CA找到了进入水体的方式，破坏了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）和较高浓度水平（PPM）的金属分析。除了与我的研究计划相关的分析需求外，其他联合研究项目还与拉瓦尔大学的教授一起进行。使用Locat等。我们研究了盐度对Saguenay峡湾沉积物中重金属规格和迁移的影响。使用LoCAT和LEROUIL，我们将根据保留重金属来评估钙衬里的性能。 Lessard研究了活性污泥过程和生物过滤器中废水的生物学定义。与Konrad合作，我们研究了盐在土壤孔隙水化学中的影响以及导致的岩土技术变化。 Marchand和合作者进行的混凝土研究旨在研究盐对混凝土结构耐用性的影响。 AAS-GF是用于金属分析的推荐技术，将提高我们环境实验室的分析能力。这将对培训高素质的学生和人员产生重大影响。