• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Water, Air, and Soil Pollution >Presence of Pesticides and Toxicity Assessment of Agricultural Soils in the Quintana Roo Mayan Zone, Mexico Using Biomarkers in Earthworms (Eisenia fetida)
【24h】

Presence of Pesticides and Toxicity Assessment of Agricultural Soils in the Quintana Roo Mayan Zone, Mexico Using Biomarkers in Earthworms (Eisenia fetida)

机译：利用Earth中的生物标记物对墨西哥金塔纳罗奥玛雅地区农用土壤中农药的存在和毒性进行评估（Eisenia fetida）

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

Agriculture intensification and the use of pesticides have led to biodiversity loss due to soil toxic compounds. Thus, soil contamination studies are important to understand the negative effects in the physicochemical interactions. The use of biomarkers through bioindicators is a useful tool for assessing toxicity in agricultural environments complemented with the determination of pesticides. The objectives of this study were to determine the presence of organochlorine (OCPs) and organophosphate (OPPs) pesticides and the soil's potential toxicity in agricultural fields with different crops from the center of Quintana Roo State, using a set of enzymatic biomarkers (BMs), such as acetylcholinesterase (AChE), glutathione-S-Transferase (GST), and catalase (CAT) on earthworms (Eisenia fetida). Earthworms were exposed for 96h on nine different agricultural soils as well as on a reference soil from a conservation area. Within all samples of soils, only OCPs were detected in low concentrations (ranged from non-detected to 1.40ppm). However, no correlation was observed between these pesticides and the BMs activity. AChE and CAT activity was significantly inhibited in at least one agricultural soil if compared to the conservation area, while no significant differences of GST were observed. The AChE activity observed suggests the presence of anticholinergic substances (that were neither detected nor determined analytically) in the sampled soils. The characterization of oxidative stress BMs was not correlated with the OCPs analyzed. Our results demonstrate that further studies of toxicity under field conditions are required, given the complexity of environmental conditions outside the laboratory.
机译：农业集约化和农药的使用由于土壤中的有毒化合物而导致生物多样性的丧失。因此，土壤污染研究对于理解物理化学相互作用中的负面影响很重要。通过生物指示剂使用生物标志物是评估农业环境中毒性的有用工具，并辅之以农药测定法。这项研究的目的是使用一套酶促生物标记物（BMs），确定金塔纳罗奥州州中部不同农作物的农田中有机氯（OCPs）和有机磷酸盐（OPPs）农药的存在以及土壤的潜在毒性，例如earth上的乙酰胆碱酯酶（AChE），谷胱甘肽-S-转移酶（GST）和过氧化氢酶（CAT）。 nine在9种不同的农业土壤以及保护区的参考土壤中暴露96小时。在所有土壤样品中，仅检测到低浓度的OCP（范围为未检测到1.40ppm）。但是，在这些农药和BMs活性之间未发现相关性。与保护区相比，至少一种农业土壤中的AChE和CAT活性受到显着抑制，而GST则没有显着差异。观察到的AChE活性表明样品土壤中存在抗胆碱能物质（既未检测到也无法分析确定）。氧化应激BMs的表征与分析的OCP无关。我们的结果表明，考虑到实验室外部环境条件的复杂性，需要进一步研究田间条件下的毒性。

著录项

相似文献

  • 外文文献
  • 中文文献
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