Occurrence and Sources of Pesticides to Urban Wastewater and the Environment

Sutton, Rebecca; Xie, Yina; Moran, Kelly D.; Teerlink, Jennifer

doi:10.1021/bk-2019-1308.ch005

Cited by 23 publications

(22 citation statements)

References 54 publications

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“…Neonicotinoids are among the most widely used insecticides in the world with applications in agriculture, forestry, home pest control, and pet flea and tick preventatives. − Due to their widespread use and hydrophilic nature (log K ow −0.64 to 1.26), neonicotinoids have become ubiquitous in natural (ground and surface waters) and engineered systems (drinking water and wastewater treatment plants) throughout the U.S. with detections between <1 and ∼100 μg/L. ,,,− Although their widespread occurrence is now recognized, there are a limited number of studies that have reported the presence and/or fate of neonicotinoid transformation products (formed via microbial degradation, − chlorination, hydrolysis, ,,, and photolysis) in these systems. Because some neonicotinoid transformation products can have altered toxicities (e.g., desnitro-imidacloprid is >300× more toxic to mammals than parent imidacloprid), − a deeper understanding of the fate of novel transformation products in natural and engineered systems is critical.…”

Section: Introductionmentioning

confidence: 99%

Combining Experimental Sorption Parameters with QSAR to Predict Neonicotinoid and Transformation Product Sorption to Carbon Nanotubes and Granular Activated Carbon

et al. 2022

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We recently discovered that transformation of the neonicotinoid insecticidal pharmacophore alters sorption propensity to activated carbon, with products adsorbing less than parent compounds. To assess the environmental fate of novel transformation products that lack commercially available standards, researchers must rely on predictive approaches. In this study, we combined computationally derived quantitative structure–activity relationship (QSAR) parameters for neonicotinoids and neonicotinoid transformation products with experimentally determined Freundlich partition constants (log K F for sorption to carbon nanotubes [CNTs] and granular activated carbon [GAC]) to model neonicotinoid and transformation product sorption. QSAR models based on neonicotinoid sorption to functionalized/nonfunctionalized CNTs (used to generalize/simplify neonicotinoid-GAC interactions) were iteratively generated to obtain a multiple linear regression that could accurately predict neonicotinoid sorption to CNTs using internal and external validation (within 0.5 log units of the experimentally determined value). The log K F,CNT values were subsequently related to log K F,GAC where neonicotinoid sorption to GAC was predicted within 0.3 log-units of experimentally determined values. We applied our neonicotinoid-specific model to predict log K F,GAC for a suite of novel neonicotinoid transformation products (i.e., formed via hydrolysis, biotransformation, and chlorination) that do not have commercially available standards. We present this modeling approach as an innovative yet relatively simple technique to predict fate of highly specialized/unique polar emerging contaminants and/or transformation products that cannot be accurately predicted via traditional methods (e.g., pp-LFER), and highlights molecular properties that drive interactions of emerging contaminants.

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Section: Introductionmentioning

confidence: 99%

Combining Experimental Sorption Parameters with QSAR to Predict Neonicotinoid and Transformation Product Sorption to Carbon Nanotubes and Granular Activated Carbon

et al. 2022

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“… ,,, For example, primidone and phenytointwo relatively stable compoundshave been detected in cabbage and lettuce irrigated with treated wastewater . Likewise, plant uptake and translocation could be an important entry pathway for short-chain per and polyfluoroalkyl substances that are persistent and bioaccumulative in terrestrial systems. − Finally, potent systemic insecticides such as fipronil, which can be present in treated wastewater at concentrations as high as 340 ng/L, could undergo plant uptake and translocation because these insecticides are designed to be distributed throughout plants after application to seeds . Attempts to quantify fipronil in the plants from this study were hindered by high background levels of the compound detected in the willow leaves used for matrix matching, low porewater concentrations, and relatively high limits of quantification for the compound.…”

Section: Resultsmentioning

confidence: 99%

Plant Uptake of Trace Organic Contaminants in Effluent-Dominated Streams: An Overlooked Terrestrial Exposure Pathway

Stiegler

Cecchetti

Sedlak

2022

Environ. Sci. Technol. Lett.

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Uptake and translocation of water-soluble organic compounds by plants represent important means through which terrestrial organisms can be exposed to organic contaminants. In terrestrial systems adjacent to wastewater effluent-dominated streams (e.g., riparian corridors), insects, mammals, and birds could be exposed to trace organic contaminants through this pathway, especially in arid regions where other water sources are scarce. Analysis of the antiepileptic drug, carbamazepine, in plants grown under conditions that mimic effluent-dominated riparian zones indicates that concentrations in plant tissues exceed levels that may pose risks to herbivorous and/or detritivorous organisms. Plant uptake of carbamazepine exhibited considerable interspecies variability and distinct spatial and temporal trends. It also showed evidence of in-planta transformation. Because effluent-dominated riparian zones serve as important habitats for terrestrial species in arid regions, plant uptake and translocation of wastewater-derived trace organic contaminants should be considered when assessing the potential ecotoxicological impacts of municipal wastewater effluent discharges.

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“…Industrialization and industrial production rely on the use of many hazardous elements and compounds such as heavy metals, metalloids, oxoanions, and derivatives [21][22][23][24]. Oxoanions are a particular challenge to water treatment because they are highly water-soluble, very mobile and nonbiodegradable and therefore contaminate groundwater, natural aquatic systems and soils [11,25].…”

Section: Common Oxoanions: Sources Abundance and Occurrencementioning

confidence: 99%

Monitoring and Management of Anions in Polluted Aqua Systems: Case Studies on Nitrate, Chromate, Pertechnetate and Diclofenac

Ahmed

Moisy

Banerji

et al. 2021

Environmental Contamination Remediation and Management

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Occurrence and Sources of Pesticides to Urban Wastewater and the Environment

Cited by 23 publications

References 54 publications

Combining Experimental Sorption Parameters with QSAR to Predict Neonicotinoid and Transformation Product Sorption to Carbon Nanotubes and Granular Activated Carbon

Combining Experimental Sorption Parameters with QSAR to Predict Neonicotinoid and Transformation Product Sorption to Carbon Nanotubes and Granular Activated Carbon

Plant Uptake of Trace Organic Contaminants in Effluent-Dominated Streams: An Overlooked Terrestrial Exposure Pathway

Monitoring and Management of Anions in Polluted Aqua Systems: Case Studies on Nitrate, Chromate, Pertechnetate and Diclofenac

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