...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemosphere >Influence of usage and chemical-physical properties on the atmospheric transport and deposition of pesticides to agricultural regions of Manitoba, Canada
【24h】

Influence of usage and chemical-physical properties on the atmospheric transport and deposition of pesticides to agricultural regions of Manitoba, Canada

机译：用量和化学物理性质对农药向加拿大曼尼托巴省农业地区的大气迁移和沉积的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study quantified the masses of 14 pesticides deposited as wet (precipitation) versus dry (gaseous and particle) atmospheric deposition at a research farm in southwestern Manitoba, Canada. The concentration in air of these pesticides was also measured. Total bulk deposition amounts (wet + dry) ranged from 0.009 to 2.3 μg m~(-2) for the 12 pesticides detected, and for the six pesticides with both wet and dry deposition detections, dry deposition contributed 12-51% of the total deposition over the crop growing season. Although not applied at the site, eight herbicides registered for use in Canada, as well as lindane (γ-HCH), were all frequently detected (92-100%) in the 12 air samples analyzed during the crop growing season, with by-product isomer α-HCH (75%), clopyralid (50%) and atrazine (8%) detected to a lesser extent. The chemical's physicochemical properties and the relative mean mass of each agricultural pesticide applied in the province of Manitoba and in a 13 km radius were significant parameters in explaining the trends in the concentrations of pesticides detected in our samples. The important contribution of dry deposition to total pesticide deposition warrants greater attention in arid and semi-arid areas such as the Prairie Region of Canada, also because under a changing climate this region is estimated to experience more severe droughts while the more favorable conditions predicted for pest infestations could lead to increased pesticide applications in agricultural and urban areas.
机译：这项研究量化了加拿大西南部曼尼托巴省一个研究农场以湿（降水）相对于干（气态和颗粒）大气沉降形式沉积的14种农药的质量。还测量了这些农药在空气中的浓度。对于检测到的12种农药，总的总沉积量（湿+干）在0.009至2.3μgm〜（-2）的范围内，对于同时检测到干湿沉降的6种农药，干沉降占总量的12-51％在农作物生长季节沉积。尽管未在现场使用，但在农作物生长季节分析的12个空气样品中，经常检出注册用于加拿大的八种除草剂以及林丹（γ-HCH）（92-100％），其中-检出的产物异构体α-六氯环己烷（75％），氯吡格雷（50％）和at去津（8％）。在曼尼托巴省和半径13 km内使用的每种农药的化学理化特性和相对平均质量是解释样本中农药浓度趋势的重要参数。干沉降对农药总沉降的重要贡献值得干旱和半干旱地区（如加拿大草原地区）的关注，这还因为在气候变化的情况下，该地区预计将遭受更严重的干旱，而预计干旱条件更为有利。有害生物的侵染可能导致农业和城市地区农药的使用增加。

著录项

  • 来源
    《Chemosphere》 |2013年第6期|1997-2003|共7页
  • 作者

    Paul Messing; Annemieke Farenhorst; Don Waite; Jim Sproull;

  • 作者单位

    Department of Soil Science, Faculty of Agricultural & Food Sciences, University of Manitoba, 362 Ellis Building, Winnipeg, MB, Canada R3T 2N2;

    Department of Soil Science, Faculty of Agricultural & Food Sciences, University of Manitoba, 362 Ellis Building, Winnipeg, MB, Canada R3T 2N2;

    Air Quality Research Division, Environment Canada, Regina, SK, Canada;

    Prairie & Northern Laboratory for Environmental Testing, Environment Canada, 5320- 122nd Street, Edmonton, Alberta, Canada T6H 3S5;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    pesticides; agriculture; prairie pothole region; air; wet deposition; dry deposition;

    机译：农药农业;草原坑洼地区空气;湿沉降干沉积;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号