...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Calibration of a Plant Uptake Model with Plant- and Site-Specific Data for Uptake of Chlorinated Organic Compounds into Radish
【24h】

Calibration of a Plant Uptake Model with Plant- and Site-Specific Data for Uptake of Chlorinated Organic Compounds into Radish

机译：用植物和特定地点的数据对植物吸收模型的校准，以将萝卜中的氯化有机物吸收

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 uptake of organic pollutants by plants is an important process for the exposure of humans to toxic chemicals. The objective of this study was to calibrate the parameters of a common plant uptake model by comparison to experimental results from literature. Radish was grown in contaminated soil (maximum concentration 2.9 ing/kg dw) and control plot. Uptake of HCHs, HCB, PCBs, and DDT plus metabolites was studied (log K_(ow) 3.66 to 7.18). Measured BCF roots-to-soil were near 1 g/g dw on the control plot and about factor 10 lower for the contaminated soil. With default data set, uptake into roots of most substances was under predicted up to factor 100. The use of site-specific data improved the predictions. Consideration of uptake from air into radish bulbs was relevant for PCBs. Measured BCF shoots ranged from ＜0.1 to ＞10 g/g dw and were much better predicted by the standard model. The results with default data and site-specific data were similar. Deposition from air was the major uptake mechanism into shoots. Transport from soil with resuspended particles was only relevant for the contaminated plot. The calculation results (in dry weight) were most sensitive to changes of the water content of plant tissue.
机译：植物对有机污染物的吸收是人类暴露于有毒化学物质的重要过程。这项研究的目的是通过与文献中的实验结果进行比较来校准常见植物吸收模型的参数。在受污染的土壤中种植萝卜（最大浓度为2.9 ing / kg dw）并进行控制。研究了六氯环己烷，六氯苯，多氯联苯和滴滴涕加代谢产物的吸收（log K_（ow）3.66至7.18）。在对照样地上，测得的BCF根-土接近1 g / g dw，被污染的土壤降低了约10倍。使用默认数据集，大多数物质的根吸收量均低于100的预测值。使用特定地点的数据可以改善预测结果。考虑从空气吸收到萝卜灯泡与PCB有关。测得的BCF枝条范围从＜0.1到＞ 10 g / g dw，并且用标准模型可以更好地预测。默认数据和特定于站点的数据的结果相似。空气中的沉积是新梢吸收的主要机制。从土壤中重新悬浮的颗粒的运输仅与受污染的土地有关。计算结果（以干重计）对植物组织水分含量的变化最敏感。

著录项

  • 来源
    《Environmental Science & Technology》 |2015年第1期|395-402|共8页
  • 作者

    Stefan Trapp;

  • 作者单位

    Technical University of Denmark, DK-2800 Kongens Lyngby, Miljovej bd 113, Denmark;

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

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