Speciation, bioavailability and toxicity of trace metals in the aquatic environment

水生环境中微量金属的形态、生物利用度和毒性

• 批准号: 6410-2011
• 负责人: Campbell, Peter
• 金额: $ 3.64万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=513238
• 关键词: Speciation; bioavailability; toxicity; trace; metals

Since the beginning of the 20th century, industrial activities have greatly increased the rates at which metals circulate through our environment. The resulting contamination of our air, water and soil by "toxic metals" is recognized as one the major environmental problems faced by society. However, the mere presence of a contaminant in the environment, as detected by a competent analytical chemist, does not necessarily mean that the contaminant is detrimental to environmental quality - this is especially true for metals, since metals are naturally present in the environment, and since the same metal may be present in various different forms or «species» («speciation» = metal distribution among these forms). Some metal species are relatively innocuous, whereas other species of the same metal may be highly toxic.

自世纪初以来，工业活动大大增加了金属在我们环境中的流通速度。由此造成的“有毒金属”对空气、水和土壤的污染被认为是社会面临的主要环境问题之一。然而，由合格的分析化学家检测到的环境中污染物的存在并不一定意味着污染物对环境质量有害-对于金属来说尤其如此，因为金属天然存在于环境中，并且因为相同的金属可以以各种不同的形式或“物种”存在（“物种”=这些形式中的金属分布）。 一些金属物质相对无害，而相同金属的其他物质可能具有高度毒性。