...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Hazardous Materials >Screening of currently used pesticides in water, sediments and biota of the Guadalquivir River Basin (Spain)
【24h】

Screening of currently used pesticides in water, sediments and biota of the Guadalquivir River Basin (Spain)

机译：瓜达尔基维尔河流域（西班牙）的水，沉积物和生物区系中目前使用的农药筛选

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 occurrence of 50 currently used pesticides and their transformation products in surface and waste waters, sediment and fish in the Guadalquivir River Basin was determined in 2010 and 2011. After selective sample extraction, pesticides were identified and quantified by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The contamination profile in water and sediments is marked by the presence of organophosphorus and triazines. Transformation products were even at higher concentrations than parent pesticides. A wider range of pesticides was present in water than in sediments but none of them were detected in fish. The mean concentrations ranged from 0.2 to 13.0 ng/L in water and from 0.1 to 13.2 ng/g d.w. in sediment. The spatial distribution of most pesticides was consistent with the agricultural activities of the area or their urban applications. The waste water treatment plant effluents that impact the river are minor sources for few pesticides but for most of them run-off would be the most important contribution. The temporal distribution showed differences between both sampling campaigns related to the river flow. The low-flow produced a pesticide concentration effect, generating higher levels in water and accumulation in sediments. This forecasts a hazard in future scenarios if the current situation of the climate change and water scarcity evolves to more critical conditions highlighting the need of these monitoring studies.
机译：确定了2010年和2011年在瓜达尔基维尔河流域的地表和废水，沉积物和鱼类中出现了50种目前使用的农药及其转化产物。选择性提取样品后，通过液相色谱-串联质谱法对农药进行了鉴定和定量。 （LC-MS / MS）。水和沉积物中的污染物分布以有机磷和三嗪的存在为标志。转化产物的浓度甚至高于母体农药。水中的杀虫剂比沉积物中的杀虫剂范围更广，但在鱼类中没有发现任何农药。水中的平均浓度为0.2至13.0 ng / L，d.w为0.1至13.2 ng / g。在沉积物中。大多数农药的空间分布与该地区的农业活动或其城市应用相符。影响河流的废水处理厂废水是少量农药的次要来源，但对于大多数农药而言，径流将是最重要的贡献。时间分布显示了与河流流量相关的两个采样活动之间的差异。低流量产生了农药浓缩作用，在水中产生了更高的水平，并在沉积物中积累了水。如果当前的气候变化和水资源短缺情况演变为更关键的条件，那么这将预测未来情况的危害，从而凸显了对这些监测研究的需求。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2013年第1期|95-104|共10页
  • 作者

    Ana Masia; Julian Campo; Pablo Vazquez-Roig; Cristina Blasco; Yolanda Pico;

  • 作者单位

    Food and Environmental Safety Research Croup, Department of Medicine Preventive, Faculty of Pharmacy, University of Valencia, Av. Vicent Andres Estelles s, 46100 Burjassot, Valencia, Spain;

    Food and Environmental Safety Research Croup, Department of Medicine Preventive, Faculty of Pharmacy, University of Valencia, Av. Vicent Andres Estelles s, 46100 Burjassot, Valencia, Spain;

    Food and Environmental Safety Research Croup, Department of Medicine Preventive, Faculty of Pharmacy, University of Valencia, Av. Vicent Andres Estelles s, 46100 Burjassot, Valencia, Spain;

    Food and Environmental Safety Research Croup, Department of Medicine Preventive, Faculty of Pharmacy, University of Valencia, Av. Vicent Andres Estelles s, 46100 Burjassot, Valencia, Spain;

    Food and Environmental Safety Research Croup, Department of Medicine Preventive, Faculty of Pharmacy, University of Valencia, Av. Vicent Andres Estelles s, 46100 Burjassot, Valencia, Spain;

  • 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

    Pesticides; Water; Sediment; Fish; Spatial distribution; Temporal distribution;

    机译：农药;水;沉淀;鱼;空间分布;时间分布;

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