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首页> 外文期刊>Journal of environmental science and health >Comparative Study Of Accessibility Of Distinctive Pesticides
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Comparative Study Of Accessibility Of Distinctive Pesticides

机译：特色农药可及性比较研究

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Interactions of micro-contaminants with soil may play a crucial role in their environmental fate and possible harmful effects. Major goals of our investigations were to model the availability of widely used pesticides and characterize adsorption capabilities of distinctive soil types by the accomplishment of extensive comparative studies and application of several extraction methods. Environmental and biological relevance of these examinations is enhanced by the fact that intrinsic features and specific details of pesticide accessibility have not been revealed so far by a comparative approach. Five different experimental methods were assessed for modelling accessibility of five selected pesticides. The applied models for regaining the pesticides showed diverse efficiency in extraction capability in cases of the different soil types (sandy, brown forest and alluvial soils). The amounts of the obtained pesticides were determined by using gas-chromatography coupled to mass spectrometry (GC-MS) and high pressure liquid chromatography coupled to mass spectrometry (HPLC-MS). Accessibility of pesticides was also compared in cases of sterilized and real soil samples in order to estimate the extent of the influence of microflora. Aqueous extraction solvents proved to be suitable for accurate assessment of the accessible amounts of pesticides, as their effectivity was at least as high as that of the applied organic solvents. In our studies pesticide-soil interactions have comprehensively been characterized, and possible influences of environmental factors on the accessibility have also been revealed. Our study might be regarded as a tentative approach to model some significant circumstances playing key roles in pesticides' possible bioavailability.
机译：微污染物与土壤的相互作用可能在其环境命运和可能的有害影响中发挥关键作用。我们研究的主要目标是通过广泛的比较研究和几种提取方法的应用，对广泛使用的农药的有效性进行建模，并表征不同土壤类型的吸附能力。迄今为止，还没有通过比较方法揭示农药可及性的内在特征和具体细节，从而增强了这些检查与环境和生物学的相关性。评估了五种不同的实验方法，以模拟五种选定农药的可及性。在不同土壤类型（沙地，棕壤和冲积土）的情况下，应用的农药回收模型显示出不同的提取能力效率。通过使用气相色谱-质谱联用（GC-MS）和高压液相色谱-质谱联用（HPLC-MS）测定获得的农药量。还比较了在灭菌和真实土壤样品中农药的可及性，以估计微生物区系的影响程度。水萃取溶剂被证明适合于准确评估农药的可利用量，因为其有效性至少与所施用的有机溶剂一样高。在我们的研究中，已全面描述了农药与土壤的相互作用，并揭示了环境因素对可及性的可能影响。我们的研究可能被认为是模拟一些重要情况的尝试性方法，这些情况在农药可能的生物利用度中起关键作用。

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