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Zboray S, Efimenko K, Jones JL, Genzer J. Functional Gels Containing Hydroxamic Acid Degrade Organophosphates in Aqueous Solutions. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Steven Zboray
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Kirill Efimenko
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Jacob L. Jones
- Department of Materials Science & Engineering, Carolina State University, Raleigh, North Carolina 27695-7907, United States
| | - Jan Genzer
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
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Anderson BS, Phillips BM, Voorhees JP, Deng X, Geraci J, Worcester K, Tjeerdema RS. Changing patterns in water toxicity associated with current use pesticides in three California agriculture regions. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2018; 14:270-281. [PMID: 29139620 DOI: 10.1002/ieam.2005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 10/18/2017] [Accepted: 11/09/2017] [Indexed: 05/26/2023]
Abstract
Regulation of agriculture irrigation water discharges in California, USA, is assessed and controlled by its 9 Regional Water Quality Control Boards under the jurisdiction of the California State Water Resources Control Board. Each Regional Water Board has developed programs to control pesticides in runoff as part of the waste discharge requirements implemented through each region's Irrigated Lands Regulatory Program. The present study assessed how pesticide use patterns differ in the Imperial (Imperial County) and the Salinas and Santa Maria (Monterey County) valleys, which host 3 of California's prime agriculture areas. Surface-water toxicity associated with current use pesticides was monitored at several sites in these areas in 2014 and 2015, and results were linked to changes in pesticide use patterns in these areas. Pesticide use patterns appeared to coincide with differences in the way agriculture programs were implemented by the 2 respective Regional Water Quality Control Boards, and these programs differed in the 2 Water Board Regions. Different pesticide use patterns affected the occurrence of pesticides in agriculture runoff, and this influenced toxicity test results. Greater detection frequency and higher concentrations of the organophosphate pesticide chlorpyrifos were detected in agriculture runoff in Imperial County compared to Monterey County, likely due to more rigorous monitoring requirements for growers using this pesticide in Monterey County. Monterey County agriculture runoff contained toxic concentrations of pyrethroid and neonicotinoid pesticides, which impacted amphipods (Hyalella azteca) and midge larvae (Chironomus dilutus) in toxicity tests. Study results illustrate how monitoring strategies need to evolve as regulatory actions affect change in pesticide use and demonstrate the importance of using toxicity test indicator species appropriate for the suite of contaminants in runoff in order to accurately assess environmental risk. Integr Environ Assess Manag 2018;14:270-281. © 2017 SETAC.
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Affiliation(s)
- Brian S Anderson
- Granite Canyon Marine Pollution Studies Laboratory, Department of Environmental Toxicology, University of California, Davis, Monterey, California, USA
| | - Bryn M Phillips
- Granite Canyon Marine Pollution Studies Laboratory, Department of Environmental Toxicology, University of California, Davis, Monterey, California, USA
| | - Jennifer P Voorhees
- Granite Canyon Marine Pollution Studies Laboratory, Department of Environmental Toxicology, University of California, Davis, Monterey, California, USA
| | - Xin Deng
- California Department of Pesticide Regulation, Surface Water Protection Program, Sacramento, California, USA
| | - Jeff Geraci
- California Regional Water Quality Control Board - Colorado River Basin Region, Palm Desert, California, USA
| | - Karen Worcester
- California Regional Water Quality Control Board - Central Coast Region, San Luis Obispo, California, USA
| | - Ron S Tjeerdema
- Granite Canyon Marine Pollution Studies Laboratory, Department of Environmental Toxicology, University of California, Davis, Monterey, California, USA
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Anderson BS, Phillips BM, Voorhees JP, Cahn M. Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff. J Vis Exp 2017:55391. [PMID: 28570529 PMCID: PMC5607960 DOI: 10.3791/55391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Urban stormwater and agriculture irrigation runoff contain a complex mixture of contaminants that are often toxic to adjacent receiving waters. Runoff may be treated with simple systems designed to promote sorption of contaminants to vegetation and soils and promote infiltration. Two example systems are described: a bioswale treatment system for urban stormwater treatment, and a vegetated drainage ditch for treating agriculture irrigation runoff. Both have similar attributes that reduce contaminant loading in runoff: vegetation that results in sorption of the contaminants to the soil and plant surfaces, and water infiltration. These systems may also include the integration of granulated activated carbon as a polishing step to remove residual contaminants. Implementation of these systems in agriculture and urban watersheds requires system monitoring to verify treatment efficacy. This includes chemical monitoring for specific contaminants responsible for toxicity. The current paper emphasizes monitoring of current use pesticides since these are responsible for surface water toxicity to aquatic invertebrates.
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Affiliation(s)
- Brian S Anderson
- Department of Environmental Toxicology, University of California, Davis; Marine Pollution Studies Laboratory - Granite Canyon;
| | - Bryn M Phillips
- Department of Environmental Toxicology, University of California, Davis; Marine Pollution Studies Laboratory - Granite Canyon
| | - Jennifer P Voorhees
- Department of Environmental Toxicology, University of California, Davis; Marine Pollution Studies Laboratory - Granite Canyon
| | - Michael Cahn
- University of California, Cooperative Extension, Monterey County
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Phillips BM, Anderson BS, Cahn M, Rego JL, Voorhees JP, Siegler K, Zhang X, Budd R, Goh K, Tjeerdema RS. An integrated vegetated ditch system reduces chlorpyrifos loading in agricultural runoff. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2017; 13:423-430. [PMID: 27426867 DOI: 10.1002/ieam.1820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 05/31/2016] [Accepted: 06/16/2016] [Indexed: 05/26/2023]
Abstract
Agricultural runoff containing toxic concentrations of the organophosphate pesticide chlorpyrifos has led to impaired water body listings and total maximum daily load restrictions in California's central coast watersheds. Chlorpyrifos use is now tightly regulated by the Central Coast Regional Water Quality Control Board. This study evaluated treatments designed to reduce chlorpyrifos in agricultural runoff. Initial trials evaluated the efficacy of 3 different drainage ditch installations individually: compost filters, granulated activated carbon (GAC) filters, and native grasses in a vegetated ditch. Treatments were compared to bare ditch controls, and experiments were conducted with simulated runoff spiked with chlorpyrifos at a 1.9 L/s flow rate. Chlorpyrifos concentrations and toxicity to Ceriodaphnia dubia were measured at the input and output of the system. Input concentrations of chlorpyrifos ranged from 858 ng/L to 2840 ng/L. Carbon filters and vegetation provided the greatest load reduction of chlorpyrifos (99% and 90%, respectively). Toxicity was completely removed in only one of the carbon filter trials. A second set of trials evaluated an integrated approach combining all 3 treatments. Three trials were conducted each at 3.2 L/s and 6.3 L/s flow rates at input concentrations ranging from 282 ng/L to 973 ng/L. Chlorpyrifos loadings were reduced by an average of 98% at the low flow rate and 94% at the high flow rate. Final chlorpyrifos concentrations ranged from nondetect (<50 ng/L) to 82 ng/L. Toxicity to C. dubia was eliminated in 3 of 6 integrated trials. Modeling of the ditch and its components informed design alterations that are intended to eventually remove up to 100% of pesticides and sediment. Future work includes investigating the adsorption capacity of GAC, costs associated with GAC disposal, and real-world field trials to further reduce model uncertainties and confirm design optimization. Trials with more water-soluble pesticides such as neonicotinoids are also recommended. Integr Environ Assess Manag 2017;13:423-430. © 2016 SETAC.
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Affiliation(s)
- Bryn M Phillips
- Department of Environmental Toxicology, University of California-Davis, Monterey, California, USA
| | - Brian S Anderson
- Department of Environmental Toxicology, University of California-Davis, Monterey, California, USA
| | - Michael Cahn
- University of California Cooperative Extension-Monterey County, Salinas, California, USA
| | - Jessa L Rego
- Department of Environmental Toxicology, University of California-Davis, Monterey, California, USA
| | - Jennifer P Voorhees
- Department of Environmental Toxicology, University of California-Davis, Monterey, California, USA
| | - Katie Siegler
- Department of Environmental Toxicology, University of California-Davis, Monterey, California, USA
| | - Xuyang Zhang
- California Department of Pesticide Regulation, Sacramento, California, USA
| | - Robert Budd
- California Department of Pesticide Regulation, Sacramento, California, USA
| | - Kean Goh
- California Department of Pesticide Regulation, Sacramento, California, USA
| | - Ron S Tjeerdema
- Department of Environmental Toxicology, University of California-Davis, Monterey, California, USA
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