Identification of core micropollutants of Ergene River and their categorization based on spatiotemporal distribution

Coupling Suspect and Nontarget Screening with Mass Balance Modeling to Characterize Organic Micropollutants in the Onondaga Lake–Three Rivers System

“…L output values of these OMPs varied over 3 orders of magnitude (i.e., 13–20 710 g/d), as reported for other wastewater-impacted river systems and lake catchments. 25 , 59 , 60 , 87 L output values of wastewater-derived and mixed-source OMPs were not statistically different (Mann–Whitney U test, p = 0.0783), with sucralose (i.e., 7700–10 770 g/d), perfluorobutanoic acid (i.e., 2520–20 470 g/d), and perfluoropentanoic acid (i.e., 1110–9530 g/d) contributing the highest L output . However, L output values in July 2017 were higher than those in October 2017 for both wastewater-derived and mixed-source OMPs (Mann–Whitney U test p = 0.0001–0.0009).…”

“…Cluster A contains 74 wastewater-derived OMPs that occurred at higher median concentrations in the samples from the WWTP outfall than in the samples from other sites in the Onondaga Lake–Three Rivers system (Tukey’s multiple comparison test p = 0.0053–0.0356). Many cluster A OMPs were pharmaceuticals, pharmaceutical TPs, pesticides, personal care products, and industrial additives that have been frequently detected in aquatic systems around the world; ,,,, however, several were pharmaceuticals (e.g., levamisole, maprotiline, pregabalin, propafenone, and phentermine) that have rarely or never been quantified in U.S. surface waters. Four cluster A OMPs, including lamotrigine, benzotriazole, methyl-1 H -benzotriazole, and sucralose, occurred in 100% of the samples with median concentrations (i.e., 139–2330 ng/L) far exceeding typical levels measured in New York surface waters. ,, Out of the 29 cluster A OMPs with a high detection frequency (i.e., ≥70%), the concentrations of 20 showed strong correlations (Pearson’s r = 0.806–0.972) with the cumulative concentration of all OMPs detected in the samples (Figure S11).…”

Validation of an Analytical Workflow for the Analysis of Pesticide and Emerging Organic Contaminant Residues in Paddy Soil and Rice

“…Chemicals and Reagents. A targeted suspect screening, covering 170 ECs, which were detected in the Ergene River 27 was conducted with the primary extract obtained from paddy soil samples. Thus, an initial target list of chemicals was created from the compounds that showed a peak in the chromatogram.…”

“…Thus, an initial target list of chemicals was created from the compounds that showed a peak in the chromatogram. After this initial study, a total of 65 compounds were selected for the target list, consisting of 42 pesticides (both priority pollutants and active ingredients of the most frequently applied pesticides for rice cultivation) and 23 industrial pollutants based on their frequent identification in related river water . As the sampling soils of interest were not fertilized by manure or sewage sludge, priority was given to pesticides and the potential water-derived industrial pollutants.…”

Determination of Pesticides in Soybean Seeds Incorrectly Discarded Near a Spring of the Paranaíba River, GO‐Brazil

“…Among the most common forms of water contamination by pesticides are soil leaching and surface runoff. [7,[20][21][22][23][24] Several researches have shown the importance of monitoring carbamates and benzimidazole in water, as for example, in the research of Guarda and collaborators, [7] who performed monitoring in Rio Formoso in Brazil, and it was detected the presence of propoxur in the water reaching a concentration of up to 0.025 μg L À 1 . As for carbendazim, it has been detected at up to 64 sites in the Ergene River in Turkey with a concentration between 0.03 and 6.33 μg L À 1 and in the Jucar River in Spain.…”