Use of Field Data to Support European Water Framework Directive Quality Standards for Dissolved Metals

MARK CRANE; KEVIN W. H. KWOK; CLAIRE WELLS; PAUL WHITEHOUSE; GILBERT C. S. LUI

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Use of Field Data to Support European Water Framework Directive Quality Standards for Dissolved Metals

机译：使用现场数据来支持欧洲水框架指令对溶解金属的质量标准

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Quality standards (QS) for dissolved metals in freshwaters have been proposed underthe European Water Framework Directive (WFD) and are based mainly upon laboratory ecotoxicity data. Uncertainties remain about laboratory-to-field extrapolation to establish QS that are neither over-nor underprotective. Freshwater benthic macroinvertebrates are a group of organisms of known sensitivity to heavy metals. We analyzed a dataset from England and Wales of dissolved metal concentrations (cadmium, chromium, copper, iron, nickel, lead, and zinc) and associated benthic invertebrate community metrics, using piecewise regression, quantile regression, and information on metal concentrations consistent with good quality status. Analysis of these field data suggests that dissolved metal QS proposed under the WFD are similar to metal concentrations in rivers associated with unimpaired benthic invertebrate assemblages in England and Wales. The only exceptions to this are QS for iron and zinc, where use of relatively large assessment factors leads to standards that are substantially below concentrations associated with impaired invertebrate assemblages in the field.

机译：根据欧洲水框架指令（WFD）提出了淡水中溶解金属的质量标准（QS），该标准主要基于实验室的生态毒性数据。关于从实验室到现场进行外推以建立QS的不确定性仍然存在，后者既不保护也不是过度保护。淡水底栖大型无脊椎动物是已知对重金属敏感的一组生物。我们使用分段回归，分位数回归以及有关金属浓度信息的良好分析了来自英格兰和威尔士的溶解金属浓度（镉，铬，铜，铁，镍，铅和锌）和相关底栖无脊椎动物群落指标的数据集。质量状况。对这些现场数据的分析表明，根据WFD提出的溶解金属QS与英格兰和威尔士未受损害的底栖无脊椎动物组合相关的河流中的金属浓度相似。唯一的例外是铁和锌的质量保证（QS），其中使用相对较大的评估因子会导致标准大大低于与无脊椎动物集合体受损相关的浓度。

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《Environmental Science & Technology》 |2007年第14期|5014-5021|共8页
作者
MARK CRANE; KEVIN W. H. KWOK; CLAIRE WELLS; PAUL WHITEHOUSE; GILBERT C. S. LUI;
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作者单位

Watts & Crane Associates, 23 London Street, Faringdon, Oxfordshire, SN7 7AG;

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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
中图分类环境化学;
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Use of Field Data to Support European Water Framework Directive Quality Standards for Dissolved Metals

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