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首页> 外文期刊>Environmental Pollution >Glyphosate and AMPA, 'pseudo-persistent' pollutants under real world agricultural management practices in the Mesopotamic Pampas agroecosystem, Argentina
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Glyphosate and AMPA, 'pseudo-persistent' pollutants under real world agricultural management practices in the Mesopotamic Pampas agroecosystem, Argentina

机译：草甘膦和AMPA，在阿根廷中介土的潘帕斯农业生态系统中，在实际农业管理实践中属于“伪持久性”污染物

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摘要

In the Pampas, public concern has strongly risen because of the intensive use of glyphosate for weed control and fallow associated with biotech crops. The present study was aimed to evaluate the occurrence and concentration of the herbicide and its main metabolite (AMPA) in soil and other environmental compartments of the mentioned agroecosystem, including groundwater, in relation to real-world agricultural management practices in the region. Occurrence was almost ubiquitous in solid matrices (83 -100%) with maximum concentrations among the higher reported in the world (soil: 8105 and 38939; sediment: 3294 and 7219; suspended particulate matter (SPM): 584 and 475 mu g/kg of glyphosate and AMPA). Lower detection frequency was observed in surface water (27-55%) with maximum concentrations in whole water of 1.80 and 1.90 mu g/L of glyphosate and AMPA, indicating that SPM analysis would be more sensitive for detection in the aquatic ecosystem. No detectable concentrations of glyphosate or AMPA were observed in groundwater. Glyphosate soil concentrations were better correlated with the total cumulative dose and total number of applications than the last spraying event dose, and an increment of 1 mg glyphosate/kg soil every 5 spraying events was estimated. Findings allow to infer that, under current practices, application rates are higher than dissipation rates. Hence, glyphosate and AMPA should be considered "pseudo-persistent" pollutants and a revisions of management procedures, monitoring programs, and ecological risk for soil and sediments should be also recommended. (C) 2017 Elsevier Ltd. All rights reserved.
机译：在南美大草原，由于大量使用草甘膦来控制与转基因作物有关的杂草和休耕，公众的关注度大大提高。本研究旨在评估除草剂及其主要代谢产物（AMPA）在上述农业生态系统的土壤和其他环境隔室（包括地下水）中的发生和浓度，与该地区的实际农业管理实践相关。在固体基质中几乎无处不在（83 -100％），在世界上报告的最高浓度中最大浓度（土壤：8105和38939；沉积物：3294和7219；悬浮颗粒物（SPM）：584和475μg / kg草甘膦和AMPA）。在地表水中观察到较低的检测频率（27-55％），全水中最大浓度的草甘膦和AMPA为1.80和1.90μg / L，这表明SPM分析对水生生态系统的检测更为敏感。在地下水中未观察到可检测浓度的草甘膦或AMPA。草甘膦土壤浓度与总累积剂量和总施用次数比上一次喷洒事件剂量更好地相关，估计每5次喷洒事件增加1 mg草甘膦/千克土壤。研究结果可以推断出，根据当前的实践，应用率要高于耗散率。因此，草甘膦和AMPA应被视为“伪持久性”污染物，还应建议修订管理程序，监测程序以及对土壤和沉积物的生态风险。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Environmental Pollution》 |2017年第10期|771-779|共9页
  • 作者

    Primost Jezabel E.; Marino Damian J. G.; Aparicio Virginia C.; Luis Costa Jose; Carriquiriborde Pedro;

  • 作者单位

    Univ Nacl La Plata, Fac Ciencias Exactas, CONICET, CIMA, Calle 47 & 115 S-N, RA-1900 La Plata, Buenos Aires, Argentina;

    Univ Nacl La Plata, Fac Ciencias Exactas, CONICET, CIMA, Calle 47 & 115 S-N, RA-1900 La Plata, Buenos Aires, Argentina;

    INTA, Estac Expt Agr Balcarce, Km 73-5,Ruta 226, RA-7620 Balcarce, Buenos Aires, Argentina;

    INTA, Estac Expt Agr Balcarce, Km 73-5,Ruta 226, RA-7620 Balcarce, Buenos Aires, Argentina;

    Univ Nacl La Plata, Fac Ciencias Exactas, CONICET, CIMA, Calle 47 & 115 S-N, RA-1900 La Plata, Buenos Aires, Argentina;

  • 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; Biotech-crops; Pampas; Soil; Sediments; Groundwater;

    机译：农药;生物技术作物;蒲苇;土壤;沉积物;地下水;

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