Currently used pesticides (CUPs) in Western Canada: sources, atmospheric transport, transformations, and new trace analytical methodologies

由于对环境和人类健康的潜在影响，农用化学品的使用日益受到加拿大人的关注，目前使用的农药（CUPs）及其代谢物或降解物在饮用水、水生系统、食物供应和我们呼吸的空气中无处不在。在过去的3-4年中，在加拿大农业地区的大气中已经检测到CUPs，这为大气途径其运动的重要性提供了证据。我们的研究考察了加拿大西部两个独特的农业区：不列颠哥伦比亚省的弗雷泽和奥卡诺根山谷，以浆果和果树为主，以及草原农业区，横跨AB， SK， MB，占加拿大谷物种植面积的89%以上。由于土地利用变化和气候变化导致的干旱，这些地区面临着虫害和生产压力增加的高风险，了解农用化学品的来源、流动途径和环境变化是建立加拿大国家和国际政策地位的关键组成部分。

Agrochemical use is of increasing concern to Canadians due to the potential impacts on the environment and human health, with currently used pesticides (CUPs) and their metabolites or degradates becoming ubiquitous in drinking water, aquatic systems, food supplies, and the air we breathe. In the last 3-4 years CUPs have been detected in the atmosphere in agricultural regions across Canada, providing evidence of the importance of the atmospheric pathway their movement. Our studies examine two distinctive western Canada agricultural regions:the Fraser and Okanogan Valleys in BC, dominated by berries and fruit trees, and the Prairie agricultural region, which spans AB, SK, MB and contains over 89% of area planted for grains in Canada. These regions are at high risk for increased infestations and production pressures as a result of land-use changes and drought expected from climate change, and understanding agrochemical sources, pathways of movement, and transformations in the environment is a critical component to establishing Canadian's position for both national and international policies.