Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, Route 226 Km 73,5, 7620 Balcarce, Buenos Aires, Argentina.
Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, Route 226 Km 73,5, 7620 Balcarce, Buenos Aires, Argentina.
Chemosphere. 2014 Jul;107:423-431. doi: 10.1016/j.chemosphere.2014.01.039. Epub 2014 Feb 16.
Argentina has 31 million hectares given over to agriculture comprising 2.2% of the world's total area under cultivation (Stock Exchange of Rosario, Argentina). Despite the intensity of this agricultural activity, data on pesticide pollution in surface water are rather scarce. In this sense, the aim of this work is to determine the presence of pesticides in surface water of four agricultural sub-basins of Argentine. An environmental monitoring was carried out to determine the impact of twenty-nine pesticides used in agricultural activities on the surface water quality of agricultural areas within the San Vicente, Azul, Buenos Aires southeast and Mista stream sub-basins. The samples were analyzed by solid-phase extraction (SPE) using OASIS HLB 60 mg cartridges and ultra-high-pressure liquid chromatography coupled to tandem mass spectrometry (UHPLC/MSMS) that provided good analytical quality parameters. The southeast of Buenos Aires was the site with the highest frequency of pesticides detection, followed by Azul and San Vicente microbasins. The most detected pesticides, considering all surface water samples, were atrazine, tebuconazole and diethyltoluamide with maximum concentration levels of 1.4, 0.035, and 0.701 μg L(-1), respectively. The results obtained for all basins studied show the presence of residual pesticides in surface waters according the different agricultural activities developed.
阿根廷拥有 3100 万公顷的农业用地，占世界耕地总面积的 2.2%（阿根廷罗萨里奥证券交易所）。尽管农业活动如此密集，但关于地表水农药污染的数据却相当匮乏。从这个意义上说，这项工作的目的是确定阿根廷四个农业子流域地表水是否存在农药。进行了环境监测，以确定在圣文森特、阿苏尔、布宜诺斯艾利斯东南部和米斯塔河流域的农业地区，农业活动中使用的 29 种农药对地表水质量的影响。使用 OASIS HLB 60mg 小柱固相萃取（SPE）和超高效液相色谱-串联质谱（UHPLC/MSMS）对样品进行分析，这些方法提供了良好的分析质量参数。布宜诺斯艾利斯东南部是检测到农药频率最高的地点，其次是阿苏尔和圣文森特小流域。考虑到所有地表水样本，检测到的最常见农药是莠去津、戊唑醇和二乙基甲苯酰胺，其最大浓度水平分别为 1.4μg/L、0.035μg/L 和 0.701μg/L。对所有研究流域的结果表明，根据不同的农业活动，地表水存在残留农药。
