Determination and risk assessment of pesticide residues in lake Amvrakia (W. Greece) after agricultural land use changes in the lake's drainage basin

Pesticides in the surface waters of Lake Vistonis Basin, Greece: Occurrence and environmental risk assessment

“…5). Our results are in agreement with those of Vryzas et al (2009) and Thomatou et al (2013) which also pointed out the high RQ values calculated for the insecticides in the Evros basin and Lake Amvrakia, respectively.…”

“…Instead of the PEC values derived from the application of exposure models, both individual results from each sample analysis and maximum concentrations (worth-case scenario) obtained from the monitoring data were used as the Measured Environmental Concentration (MEC) (Thomatou et al, 2013;Vryzas et al, 2009). The No-observed effect concentration values (NOEC) were used for the calculation of the Predicted no-effect concentration (PNEC).…”

“…The use of the Risk Quotient (RQ) e.g. the ratio between the PEC and the NOEC (No Observed Effect Concentration) has been used for the initial (tier 1) ecotoxicological risk assessment in various water bodies (Palma et al, 2014;Thomatou et al, 2013;Vryzas et al, 2009). …”

Pesticides and Herbicides

“…Anderson et al (2013) examined the water quality of the playa wetlands in the SHP of the USA and measured water concentrations of pesticides used on cotton, the dominant crop in the SHP. The measured pesticide concentrations were compared to pesticide ecological risk assessment toxicity benchmarks used by the US EPA andfound that all maximum measured concentrations of pesticides in water exceeded at least one toxicity benchmark, indicating a potential for adverse effects of pesticides to aquatic organisms Thomatou et al (2013). monitored pesticides using solid phase extraction (SPE) in Amvrakia Lake in west Greece after land use changes in the lake's basin.…”

Effects of insecticides on aquatic ecosystems in Bangladesh

“…Ccanccapa et al (2016b) also reported the maximum RQ value of this pesticide of 3.6 for Daphnia in Ebro River, which is several hundred folds lower than we calculated for chlorpyrifos in our study. Almost similar, lower RQ values of chlorpyrifos than our study have been reported for surface water in different parts of the world (Thomatou et al, 2013;Stamatis et al, 2013;Montuori et al, 2016;Wee and Aris, 2017 NC = Not calculated by the PERPEST model since they did not show potential risk (RQ < 1) by RQ method; NI = Not included while any pesticides showed < 50% probability of clear effects for any of the endpoints both in surface and pore water by PERPEST model.…”