Graphite furnace atomic absorption spectrophotometer

石墨炉原子吸收分光光度计（AAS-GF）。工业、商业和扩散性农业废物通过各种途径造成了土地、盆地、港口或湖泊中沉积物和土壤的污染。大多数网站含有重金属（HM =铅，锌，镉，铬，镍）在痕量或更高的浓度。 金属本身具有持久性;它们既不是由人为或生物过程产生的，也不是由人为或生物过程破坏的，尽管它们可能经历各种形态变化。除冰盐在公路径流携带大量的碱金属（钠，钙）需要我们的关注，并正在调查。加拿大大量使用除冰盐。Na和Ca进入水体，破坏化学平衡，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在痕量（微克/升）和更高浓度水平（百万分之一）进行金属分析。除了与我的研究项目相关的分析需求外，我还与拉瓦尔大学的教授进行了其他联合研究项目。我们与Locat等人一起研究了盐度对Saguenay峡湾沉积物中重金属形态和迁移的影响。我们与Locat和Leroeuil合作，对方解石衬垫在重金属保留方面的性能进行评估。Lessard研究活性污泥法和生物过滤器中废水沃茨的生物降解。与康拉德合作，我们研究盐在土壤孔隙水化学和由此产生的岩土工程变化的影响。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。这将对培养高素质的学生和人才产生重大影响。

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.