...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Organochlorine Compounds in Trout from Lakes over a 1600 Meter Elevation Gradient in the Canadian Rocky Mountains
【24h】

Organochlorine Compounds in Trout from Lakes over a 1600 Meter Elevation Gradient in the Canadian Rocky Mountains

机译：加拿大落基山脉海拔1600米以上的湖泊鳟鱼中的有机氯化合物

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

The effect of altitude on the concentration and composition of organochlorine compounds (OC) in trout was investigated along an elevation gradient of 1600 m in the Canadian Rocky Mountains. The eight lakes sampled were within or adjacent to national parks in sparsely settled parts of Alberta and British Columbia, thus contaminants were assumed to have derived from long-range atmospheric transport. Concentrations of several OCs in trout increased significantly with lake elevation. In general, these increases were most pronounced for the higher K_(ow) pesticides (i.e., dieldrin and DDTs), and less pronounced for lower K_(ow) pesticides (e.g., HCHs and HCB) and PCBs. Most OC concentrations in trout were inversely correlated with fish growth rate. Growth rate explained more of the variation for some OCs (particularly PCBs) than lake elevation. Differences in trophic position (indicated by δ~(15)N) explained little of the variation in OC concentration in comparison to other factors such as lake elevation and the growth rate and age of trout. Using principal component analysis (PCA), we identified the importance of lake elevation and octanol/water partition coefficient (K_(ow)) to the OC composition of trout.
机译：在加拿大落基山脉的海拔1600 m处，研究了海拔高度对鳟鱼中有机氯化合物（OC）浓度和组成的影响。采样的八个湖位于亚伯达省和不列颠哥伦比亚省稀疏定居的部分国家公园之内或附近，因此，污染物被认为是由于远程大气迁移所致。随着湖泊海拔的升高，鳟鱼中几种OC的浓度显着增加。通常，这些增加对于较高的K_（ow）农药（如狄氏剂和DDTs）最为明显，而对于较低的K_（ow）农药（如HCHs和HCB）和PCBs则较不明显。鳟鱼中大多数OC含量与鱼的生长速度成反比。增长率解释了某些OC（尤其是PCB）的变化，而不是湖泊高程。营养位置的差异（由δ〜（15）N表示）与其他因素（例如湖泊海拔和鳟鱼的生长速度和年龄）相比，几乎无法解释OC浓度的变化。使用主成分分析（PCA），我们确定了湖泊海拔和辛醇/水分配系数（K_（ow））对鳟鱼OC组成的重要性。

著录项

相似文献

  • 外文文献
  • 中文文献
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