Transport of mecoprop from agricultural soils to an adjacent salt marsh

被引：12

作者：

Fletcher, CA

Scrimshaw, MD

Lester, JN

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Fac Life Sci, Dept Environm Sci & Technol, London SW7 2BP, England

[2] HR Wallingford Ltd, Wallingford OX10 8BB, Oxon, England

来源：

MARINE POLLUTION BULLETIN | 2004年 / 48卷 / 3-4期

关键词：

herbicide; runoff; sediment; contamination; salt marsh; mecoprop;

D O I：

10.1016/j.marpolbul.2003.08.006

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Salt marshes are important ecological areas and play a significant role in coastal flood defence schemes. In many areas of the UK they are adjacent to agricultural areas utilised for the growth of cereal crops, for which mecoprop is used as a selective herbicide in the control of broad-leafed weeds. This study measured concentrations of mecoprop in soils, drainage ditch waters and sediments and salt marsh sediments over a period of 138 days following spring application. Soil concentrations of up to 1827 mug/g were recorded after application, which demonstrated a half life for mecoprop of from 9 to 12 days, with first order kinetics. However, a major rainfall event 9 days after application resulted in significant transport of herbicide to the salt marsh via subsurface field drains, drainage ditches and discharge sluice. Mecoprop concentrations of up to 386 mug/l observed in water samples were above UK guidelines. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：313 / 320

页数：8

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