...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental toxicology and chemistry >USE OF A FRESHWATER SEDIMENT QUALITY DATABASE IN AN EVALUATION OF SEDIMENT QUALITY CRITERIA BASED ON EQUILIBRIUM PARTITIONING AND SCREENING-LEVEL CONCENTRATIONS
【24h】

USE OF A FRESHWATER SEDIMENT QUALITY DATABASE IN AN EVALUATION OF SEDIMENT QUALITY CRITERIA BASED ON EQUILIBRIUM PARTITIONING AND SCREENING-LEVEL CONCENTRATIONS

机译：基于平衡分配和筛分浓度的淡水沉积物质量数据库在沉积物质量评价中的应用

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

A sediment quality database was developed for sediments from the Great Lakes and surrounding watersheds. Database file structure was based on commercially available database-management software and is relational in nature. Database inputs include sample identification information, whole-sediment and pore-water chemical data, benthic macroinvertebrate species abundances, toxicity test results, and, when available, organism-specific chemical residue data. The database functions as both a laboratory data archival system and as a source of information on the fate and effects of contaminants in freshwater sediments. Database information was used to evaluate two alternative methods for developing sediment quality criteria for di-eldrin, endrin, acenaphthene, fluoranthene, and phenanthrene. Sediment quality criteria developed by the U.S. Environmental Protection Agency based on equilibrium partitioning theory were compared to sediment quality criteria or guidelines based on screening-level concentrations calculated by the Ontario Ministry of the Environment and from the database developed in this study. Data from the sediment quality database were also used to determine the frequency with which sediment quality criteria were exceeded in recently (< 20 years) collected sediment samples. Excesses beyond the proposed equilibrium partitioning-derived sediment quality criteria were observed in less than 10% of the samples in the database for which chemical concentrations of dieldrin, endrin, acenaphthene, fluoranthene, and phenanthrene were available. Based on the results of this study, sediment quality criteria based on equilibrium partitioning theory and final chronic water-quality criteria are consistent with sediment quality criteria based on screening-level concentrations determined from field samples.
机译：建立了大湖和周围流域沉积物的沉积物质量数据库。数据库文件结构基于可商购的数据库管理软件，并且本质上是关系型的。数据库输入包括样品识别信息，全沉积物和孔隙水化学数据，底栖大型无脊椎动物物种的丰度，毒性测试结果以及（如果有）特定于生物的化学残留数据。该数据库既可作为实验室数据档案系统，又可作为淡水沉积物中污染物的命运和影响的信息源。数据库信息被用来评估两种替代方法，以制定狄氏剂，异狄氏剂，，荧蒽和菲的沉积物质量标准。将美国环境保护署根据平衡分配理论制定的泥沙质量标准与根据安大略省环境部计算的筛分浓度和本研究开发的数据库得出的泥沙质量标准或指南进行了比较。来自沉积物质量数据库的数据还用于确定最近（<20年）收集的沉积物样品超过沉积物质量标准的频率。在数据库中不到10％的样品中可观察到超过提议的平衡分配派生的沉积物质量标准的过量，这些样品中狄氏剂，异狄氏剂，，荧蒽和菲的化学浓度可用。根据这项研究的结果，基于平衡分配理论的沉积物质量标准和最终的长期水质标准与基于从田间样品中确定的筛选水平浓度的沉积物质量标准相一致。

著录项

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