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首页> 外文期刊>Environmental toxicology and chemistry >ENVIRONMENTAL MONITORING AND ECOLOGICAL RISK ASSESSMENT FOR PESTICIDE CONTAMINATION AND EFFECTS IN LAKE PAMVOTIS, NORTHWESTERN GREECE
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ENVIRONMENTAL MONITORING AND ECOLOGICAL RISK ASSESSMENT FOR PESTICIDE CONTAMINATION AND EFFECTS IN LAKE PAMVOTIS, NORTHWESTERN GREECE

机译：西北希腊帕沃莫蒂斯湖环境中农药污染及其影响的环境监测和生态风险评估

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摘要

Monitoring of pesticide residues in water and sediments was conducted as a basis for subsequent ecotoxicological risk assessment for the shallow eutrophic Lake Pamvotis, northwestern Greece. During a one-year study period, atrazine, desethylatrazine (DEA), simazine, diazinon, malathion, oxamyl, carbofuran, and ethion were detected in water and atrazine, desethylatrazine, diazinon, and s-ethyl dipropylthiocarbamate (EPTC) in sediments, all at ppb concentration level. Temporal variation in pesticide concentrations was observed. Highest residue levels for most pesticides in both water and sediment matrices occurred in the May to July period with the exception of atrazine and DEA, which show highest levels in water during the September to November period. The ecological risk associated with pesticide contamination was assessed using two different methods: The toxic unit method, which provides a first indication of the relative contribution of detected pesticides to the total toxicity and a probabilistic approach, and the inverse method of Van Straalen and Denneman, which is used to quantify the ecological risk. The maximum percentage of the ecological risk was 10.3 and 51.8% for water and 17.2 and 70.6% for sediment, based on acute and chronic level, respectively. These results show that pesticides exert a significant pressure on the aquatic system of Lake Pamvotis, especially for the chronic-effect level. Simple quotient methods should be coupled with higher-tier risk assessment, especially if restoration activities on lake ecosystems are to be undertaken for sustainable development.
机译：监测水和沉积物中的农药残留，作为随后对希腊西北部富营养化浅水富营养化湖Pamvotis进行生态毒理学风险评估的基础。在为期一年的研究期内，在水中检测到了r去津，去乙基阿特拉津（DEA），西马津，二嗪农，马拉硫磷，草酰胺，草酰呋喃和乙硫醇，并在沉积物中检测到了r去津，去乙基阿特拉津，二嗪农和仲乙基二丙基硫代氨基甲酸酯（EPTC）。在ppb浓度水平。观察到农药浓度随时间变化。在五月至七月期间，水和沉积物基质中大多数农药的最高残留量发生在阿特拉津和DEA之外，后者在九月至十一月期间的水中含量最高。使用两种不同的方法评估了与农药污染相关的生态风险：毒性单位法，这是检测到的农药对总毒性和概率方法的相对贡献的第一个指标；范斯特拉伦和丹尼曼的反方法，用于量化生态风险。根据急性和慢性水平，最大的生态风险百分比分别为水的10.3％和51.8％，沉积物的17.2％和70.6％。这些结果表明，农药对帕姆沃蒂斯湖的水生系统施加了很大的压力，特别是在长期影响水平上。应将简单的商法与更高层次的风险评估相结合，尤其是如果要针对湖泊生态系统进行恢复活动以实现可持续发展时尤其如此。

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