Urban soil contamination by current-use pesticides and their transformation products: Insights from targeted analysis and suspect screening
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View abstract on PubMed
Summary
This summary is machine-generated.Urban soils contain pesticides, varying by land use and income. Residential areas show high pesticide levels, with some posing ecological risks. Pesticide transformation products also require assessment.
Area Of Science
- Environmental Chemistry
- Urban Ecology
- Soil Science
Background
- Urban soils are recognized as significant reservoirs for pesticides.
- The extent of pesticide contamination in urban environments is not well understood.
- Pesticide presence in urban soils can impact ecological and human health.
Purpose Of The Study
- To characterize pesticide contamination in urban soils across different land use types and socioeconomic communities.
- To identify specific pesticides and their transformation products in Metro Detroit urban soils.
- To conduct a preliminary ecological risk assessment of detected pesticides.
Main Methods
- Collected and analyzed 60 soil samples from parks, vacant lots, residential lots, and urban farms.
- Employed targeted analysis and suspect screening to identify pesticides and their transformation products.
- Performed a preliminary ecological risk assessment using Risk Quotients (RQ).
Main Results
- Identified 20 pesticides, with residential lots showing the highest concentrations (e.g., imidacloprid, bromoxynil, 2,4-D).
- Pesticide profiles differed significantly by land use and socioeconomic status; high-income areas had more imidacloprid, while low-income areas had more 2,4-D and bromoxynil.
- Imidacloprid posed a high ecological risk in 29% of residential lots, and bromoxynil posed a moderate risk in over 70% of vacant and residential lots. Over 100 probable pesticides and transformation products were detected, some exceeding parent compound levels.
Conclusions
- Urban soil pesticide contamination varies distinctly with land use and socioeconomic factors.
- Pesticide transformation products are prevalent and can exceed parent compound concentrations, necessitating their inclusion in risk assessments.
- Findings highlight the need for targeted urban soil management strategies considering pesticide profiles and ecological risks.
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