Analytical Methods for Understanding Sources and Fate Processes of Emerging Environmental Contaminants

了解新兴环境污染物的来源和归宿过程的分析方法

• 批准号: RGPIN-2015-04852
• 负责人: Ross, Matthew
• 金额: $ 1.46万
• 依托单位: Grant MacEwan University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=590060
• 关键词: Analytical; Methods; Understanding; Sources; Fate

The presence of chemical pollutants in the environment is of great concern to many people today. Knowledge of how physical and chemical processes influence pollutant concentrations in the environment is necessary to accurately determine sources of pollutants and for controlling their potential risks to humans and ecosystems. Of particularly concern to the Canadian environment are petroleum carboxylic acids (often referred to as naphthenic acids). These compounds are naturally present in bitumen and may enter the environment through the erosion of exposed bitumen outcrops. However, oil sands process-affected water (OSPW) contains high concentrations of these chemicals, which have been identified as the main driver of chemical toxicity in OSPW. Their detection in surface waters raises concerns about potential human sources and adverse effects on ecosystems. Petroleum carboxylic acids exist as a complex mixture of chemicals, which makes identification of individual components difficult. This, in turn, hampers understanding of potential sources and risks posed by these chemicals.

当今环境中化学污染物的存在引起了许多人的极大关注。了解物理和化学过程如何影响环境中污染物浓度对于准确确定污染物来源并控制其对人类和生态系统的潜在风险是必要的。加拿大环境特别关注的是石油羧酸（通常称为环烷酸）。这些化合物天然存在于沥青中，并可能通过暴露的沥青露头的侵蚀进入环境。然而，油砂工艺影响水 (OSPW) 含有高浓度的这些化学物质，这些化学物质已被确定为 OSPW 化学毒性的主要驱动因素。在地表水中检测到它们引起了人们对潜在人类来源和对生态系统不利影响的担忧。石油羧酸以复杂的化学混合物形式存在，这使得单个成分的识别变得困难。这反过来又妨碍了对这些化学品的潜在来源和风险的了解。