Improving commercial chemical stewardship in Canada

加拿大（根据CEPA）、美国（根据TSCA）、欧盟（根据REACh方案）和其他几个国家有法律义务评估成千上万种当前使用的和新的商业化学品的环境行为，目的是确定对环境和人类健康有害的物质。目前用于评估化学物质在食物网中生物放大能力的框架有一个主要的局限性，即它不能解释生物分解。这可能导致对许多商业化学品的环境危害进行错误分类，从而导致不必要的经济困难，失去化学产品的社会效益，以及增加对人类健康和环境影响的风险。对商业化学品的环境影响进行适当的全球分类对加拿大具有特别重要的战略意义，因为加拿大的人类和野生动物种群都是如此

Canada (under CEPA), the United States (under TSCA), the European Union (under the REACh program) and several other countries are under the legal obligation to evaluate the environmental behaviour of the many thousands of current-use and new commercial chemicals with the goal to identify harmful substances for the environment and human health. The current framework used to assess the ability of chemicals to biomagnify in food-webs has a major limitation in that it cannot account for the biological breakdown. This can cause the miscategorization of the environmental hazards of many commercial chemicals leading to unnecessary economic hardship, loss of societal benefits of chemical products as well as increased risk of human health and environmental effects. The proper global categorization of the environmental effects of commercial chemicals is of particular strategic importance to Canada because human and wildlife populations in Canada are