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Assessing the Occurrence and Distribution of Pyrethroids in Water and Suspended Sediments
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Section:Abstract
The distribution of pyrethroid insecticides in the environment was assessed by separately measuring concentrations in the dissolved and suspended sediment phases of surface water samples. Filtered water was extracted by HLB solid-phase extraction cartridges, while the sediment on the filter was sonicated and cleaned up using carbon and aluminum cartridges. Detection limits for the 13 pyrethroids analyzed by gas chromatography−tandem mass spectrometry were 0.5 to 1 ng L−1 for water and 2 to 6 ng g−1 for the suspended sediments. Seven pyrethroids were detected in six water samples collected from either urban or agricultural creeks, with bifenthrin detected the most frequently and at the highest concentrations. In spiked water samples and field samples, the majority of the pyrethroids were associated with the suspended sediments.
Keywords (keywords):
Pyrethroids; water; suspended sediment; GC-MS; GC-MS-MSCiting Articles
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This article has been cited by 3 ACS Journal articles (3 most recent appear below).
Occurrence and Toxicity of Three Classes of Insecticides in Water and Sediment in Two Southern California Coastal Watersheds
Laura Delgado-Moreno, Kunde Lin, Rebecca Veiga-Nascimento, and Jay GanJournal of Agricultural and Food Chemistry2011 Article ASAPOccurrence and Toxicity of Three Classes of Insecticides in Water and Sediment in Two Southern California Coastal Watersheds
Laura Delgado-Moreno, Kunde Lin, Rebecca Veiga-Nascimento, and Jay GanJournal of Agricultural and Food Chemistry2011 Article ASAPThe occurrence of chlorpyrifos, diazinon, pyrethroids, and fipronil was investigated in two watersheds along the southern California coast. Paired surface water and sediment samples were collected under dry and wet (after significant rain events) weather ...
Sources of Pyrethroid Insecticides in California’s Urban Watersheds: A Conceptual Model
Kelly D. MoranPatti L. TenBrook2011 1075 (), 287-308Sources of Pyrethroid Insecticides in California’s Urban Watersheds: A Conceptual Model
Kelly D. MoranPatti L. TenBrook2011 1075 (), 287-308Pyrethroid insecticides have been linked to widespread aquatic toxicity in California’s urban watersheds. To assist with the identification of the specific applications or activities linked to pyrethroids discharges, a conceptual model of the transport of ...
Effect of Dissolved Organic Carbon on Sorption of Pyrethroids to Sediments
L. Delgado-Moreno, L. Wu, and J. GanEnvironmental Science & Technology2010 44 (22), 8473-8478Effect of Dissolved Organic Carbon on Sorption of Pyrethroids to Sediments
L. Delgado-Moreno, L. Wu, and J. GanEnvironmental Science & Technology2010 44 (22), 8473-8478Despite their strong hydrophobicity, recent studies showed widespread occurrence of pyrethroid in downstream surface waters bodies. In this work, the effect of dissolved organic carbon (DOC) on the sorption and desorption of pyrethroids in sediment was ...
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History
- Published In Issue October 14, 2009
- Article ASAPSeptember 16, 2009
- Received: June 15, 2009
Revised: August 31, 2009
Accepted: September 1, 2009
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