...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental toxicology and chemistry >PILOT SCALE VALIDATION OF THE RIVER/FISH BIOACCUMULATION MODELING PROGRAM FOR NONPOLAR HYDROPHOBIC ORGANIC COMPOUNDS USING THE MODEL COMPOUNDS 2,3,7,8-TCDD AND 2,3,7,8-TCDf
【24h】

PILOT SCALE VALIDATION OF THE RIVER/FISH BIOACCUMULATION MODELING PROGRAM FOR NONPOLAR HYDROPHOBIC ORGANIC COMPOUNDS USING THE MODEL COMPOUNDS 2,3,7,8-TCDD AND 2,3,7,8-TCDf

机译：使用模型化合物2,3,7,8-TCDD和2,3,7,8-TCDf对非极性疏水性有机化合物进行河流/鱼类生物富集建模程序的规模验证

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 interactive and user-friendly PC-computer-based RIVER/FISH mechanistic modeling procedure was evaluated and found to provide credible simulations of aquatic organism bioaccumulation for nonpolar hydrophobic organic chemicals (NPHOCs) using a four-trophic-level food web calculation methodology. Model evaluation included calibration to observations of tetrachlorinated dibenzodioxin and -furan (TCDD/F) bioaccumulation in largemouth bass (Micropterus salmoides) and channel catfish (Ictalurus punctatus) that were exposed in pilot-scale experimental streams receiving biologically treated pulp mill effluent and subsequent comparison of model predictions without bioaccumulation parameter adjustment (validation) to similar but independently obtained bioaccumulation observations. When calibrated with site-specific information on NPHOC loading rates and organism feeding habits, model prediction uncertainty was within U.S. Environmental Protection Agency (EPA) established standards averaging 1.1 pg/g for the observations used for model validation, which all measured <20 pg/g. The procedure appears suitable for field-scale applications provided the site-specific feeding habits of each organism in the simulated food web can be estimated accurately, all significant chemical loadings are quantified, and the natural variability of bioaccumulation processes is considered when interpreting simulation results.
机译：交互式和用户友好的基于PC计算机的RIVER / FISH机制建模过程进行了评估，发现该方法可使用四营养级食品网计算方法为非极性疏水性有机化学品（NPHOC）的水生生物生物积累提供可靠的模拟。模型评估包括校准观察到的大口黑鲈（Micropterus salmoides）和channel鱼（Ictalurus punctatus）中四氯化二苯并二恶英和-呋喃（TCDD / F）的生物积累，这些污染物暴露于接受生物处理的制浆厂废水的中试规模实验溪流中，随后进行比较无需进行生物蓄积参数调整（验证）的模型预测，即可获得与相似但独立获得的生物蓄积观测值。当使用有关NPHOC加载速率和生物进食习惯的特定于站点的信息进行校准时，模型预测的不确定性在美国环境保护署（EPA）制定的用于模型验证的观察结果的平均平均值为1.1 pg / g的范围内，所有标准均<20 pg / G。如果可以准确估计模拟食物网中每种生物的特定地点进食习惯，量化所有重要的化学负载以及在解释模拟结果时考虑到生物蓄积过程的自然变异性，则该程序似乎适用于现场规模的应用。

著录项

相似文献

  • 外文文献
  • 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