Water Quality Monitoring and Surveillance Division, Water Science and Technology, Environment and Climate Change Canada, 45 Alderney Drive, Dartmouth, NS, B2Y 2N6, Canada.
Arch Environ Contam Toxicol. 2020 May;78(4):568-578. doi: 10.1007/s00244-020-00721-2. Epub 2020 Feb 27.
Bisphenol A (BPA) is a manmade chemical that is only found in the environment due to anthropogenic activities. A total of 1150 surface freshwater samples were collected and analysed for BPA at 44 sampling sites in Canada from 2012 to 2018. The resultant concentrations ranged from 3.05 to 1888.51 ng/L. In addition, 64% of the samples were reported to be under the detection limit of the laboratory. In comparison, the Federal Environmental Quality Guideline for the protection of aquatic life is 3500 ng/L. Sampling sites were categorised into four groups based on the dominant activities present upstream in their watersheds: reference sites, mixed use sites, urban sites, and municipal waste water treatment plants (MWWTP) associated sites. Based on the results of this study, detections of BPA in water samples were more frequent in urban and MWWTP-associated sites. Additionally, there does not seem to be a statistically significant temporal (upward or downward) or spatial trend in BPA concentrations in Canadian surface waters from 2012 to 2018 only. Overall, Canadian BPA results are of similar concentrations to that of other countries in Asia and Europe.
双酚 A（BPA）是一种人为化学物质，仅因人类活动而存在于环境中。2012 年至 2018 年，在加拿大的 44 个采样点收集了 1150 个地表水样本，并对其进行了 BPA 分析。结果浓度范围为 3.05 至 1888.51ng/L。此外，有 64%的样本报告低于实验室的检测限。相比之下，保护水生生物的联邦环境质量指南为 3500ng/L。采样点根据其流域上游的主要活动分为四类：参照点、混合用途点、城市点和城市污水处理厂（MWWTP）相关点。根据这项研究的结果，在城市和 MWWTP 相关点的水样中更频繁地检测到 BPA。此外，在 2012 年至 2018 年期间，加拿大地表水的 BPA 浓度似乎没有明显的时间（向上或向下）或空间趋势。总体而言，加拿大的 BPA 结果与亚洲和欧洲其他国家的浓度相似。
