期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 624, 期 -, 页码 732-743出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scitotenv.2017.12.074
关键词
Risk assessment; Risk quotient; Insecticides; Pyrethroids, river, stream
资金
- Hellenic Ministry of Rural Development and Food, Department of Community Funding and Infrastructure, Division of Reclamation of Natural Resources, Soil and Water, Section C, Protection of Irrigation Water [9091/16-04-2010]
The pollution caused by pesticides, and their ecotoxicological implications were investigated in water samples from the Strymonas and Nestos river basins (Northern Greece). Chlorpyrifos was the most frequently detected pesticide in both basins (42 and 37% in the Strymonas and Nestos basins, respectively), followed by fluometuron and terbuthylazine (25 and 12%, Strymonas), and bentazone and boscalid (24 and 10%, Nestos). The Annual Average and the Maximum Allowable Concentration of Environmental Quality Standards set in European Union Directives were exceeded in several cases by alphamethrin and chlorpyrifos. Risk Quotient assessment revealed significant ecological risk towards the aquatic organisms in over 20% of the water samples. Insecticides (mostly pyrethroids and organophosphosphates) contributed more in the ecotoxicological risk than herbicides and fungicides. The three main rivers in the current study (Strymonas, Aggitis, Nestos) exhibited similar sum of RQs indicating that aquatic life in all three of them was at the same risk level. However, the sums of RQs were higher in the various streams monitored than the three rivers. (C) 2017 Elsevier B.V. All rights reserved.
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