Pyrethrins and Piperonyl Butoxide Adsorption to Soil Organic Matter

Antonįous, George F.; Patel, Gayatri A.; Snyder, John C.; Coyne, Mark S.

doi:10.1081/pfc-120027436

Cited by 15 publications

(16 citation statements)

References 18 publications

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“…For hydrophobic compounds, having the least soluble compound or the highest K OW will adsorb most strongly on soils (Oudou and Hansen 2002a). Similar results were obtained by Antonious et al (2004), who indicated that the two most important characteristics determining soil adsorption towards pesticides were the organic matter content of the soil and the water solubility of the organic compound. Chiou et al (1979) also found that adsorption of non-ionic compounds on soil particles depended directly on the organic carbon content (K OC ) of the adsorbing phase.…”

Section: Discussionsupporting

confidence: 89%

Adsorption of lambda-cyhalothrin and cypermethrin on two typical Chinese soils as affected by copper

Liu

Lū

Xie

et al. 2008

Environ Sci Pollut Res

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It is important for environmental scientists and engineers to get a better understanding of soil-metal-organic contaminant interactions. However, pesticide adsorption involves complex processes, and shortcomings in understanding them still restrict the ability to predict the fate and behavior of pesticide. Therefore, considerable research should be carried out to understand the mechanism of interaction between Pys and heavy metal on soils clearly.

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Section: Discussionsupporting

confidence: 89%

Adsorption of lambda-cyhalothrin and cypermethrin on two typical Chinese soils as affected by copper

Liu

Lū

Xie

et al. 2008

Environ Sci Pollut Res

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“…The greater the K OC value of a pesticide, the stronger the binding to the soil. [24][25][26] Walker and Welch [27] studied the degradation rates of three herbicides and their strengths to adsorption; their results showed an order of degradation rate of metribuzin > alachlor > atrazin and an order of adsorption of alachlor > atrazin > metribuzin. Metribuzin mineralization to 14 CO 2 proceeded more slowly in amended soil than in unamended soil.…”

Section: Resultsmentioning

confidence: 98%

Impact of soil amendments on metribuzin and DCPA half-lives and mobility into agricultural runoff water

Antonįous

Turley

Hill

2014

Journal of Environmental Science and Health, Part B

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The retention and behavior of two herbicides, metribuzin [4-amino-6-tert-butyl-4, 5-dihydro-3-methylthio-1, 2, 4-triazin-5-one] and DCPA [1,2,3,5, dimethyl] ester, in runoff and seepage water from agricultural fields were investigated. The objectives of this investigation were to: (i) determine the dissipation and half-life (T 1/2 ) of metribuzin and DCPA herbicides in soil under three management practices: chicken manure (CM), sewage sludge (SS), and no-mulch native soil (NM); (ii) monitor herbicides residues in runoff and infiltration water following addition of soil amendments; and (iii) determine the impact of soil amendments on the transport of NO 3 , NH 4 , and PO 4 from soil into surface and subsurface water. Half-life (T 1/2 ) values of metribuzin were 24, 18, and 12 d in CM, SS, and NM treatments, respectively. Similarly, T 1/2 values of DCPA were greater in CM and SS incorporated soil (45.8 and 52.2 d, respectively) compared to NM native soil (26.2 d). Addition of CM and SS to native agricultural soil increased water infiltration, lowering runoff water volume and herbicide residues in runoff following natural rainfall events. We concluded that soil amendments could be used to intercept pesticide-contaminated runoff from agricultural fields. This practice might provide a potential solution to pesticide contamination of surface and seepage water from farmlands.

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“…The greater the K OC value of a pesticide, the stronger the binding to the soil. [17,18] Dimethazone is highly soluble in water (1100 mg L −1 ) and has a Koc of 150-562 mL g −1. [19] These properties indicate its potential mobility and aquatic environmental pollution.…”

Section: Resultsmentioning

confidence: 99%

Mitigation of dimethazone residues in soil and runoff water from agricultural field

Antonįous

2010

Journal of Environmental Science and Health, Part B

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Dimethazone, also known as clomazone [2-[(2-chlorophenyl) methyl]- 4,4-dimethyl-3-isoxaolidinone] is a pre-emergent nonionic herbicide commonly used in agriculture. A field study was conducted on a silty-loam soil of 10 % slope to monitor off-site movement and persistence of dimethazone in soil under three management practices. Eighteen plots of 22 x 3.7 m each were separated using stainless steel metal borders and the soil in six plots was mixed with municipal sewage sludge (MSS) and yard waste (YW) compost (MSS+YW) at 15 t acre⁻¹ on dry weight basis, six plots were mixed with MSS at 15 t acre⁻¹, and six unamended plots (NM) were used for comparison purposes. The objectives of this investigation were to: (i) monitor the dissipation and half-life (T₁/₂) of dimethazone in soil under three management practices; (ii) determine the concentration of dimethazone residues in runoff and infiltration water following natural rainfall events; and (iii) assess the impact of soil amendments on the transport of NO₃, NH₄, and P into surface and subsurface water. Gas chromatography/mass spectrometery (GC/MS) analyses of soil extracts indicated the presence of ion fragments at m/z 125 and 204 that can be used for identification of dimethazone residues. Intitial deposits of dimethazone varied from 1.3 μg g⁻¹ dry native soil to 3.2 and 11.8 μg g⁻¹ dry soil in MSS and MSS+YW amended soil, respectively. Decline of dimethazone residues in the top 15 cm native soil and soil incorporated with amendments revealed half-life (T₁/₂) values of 18.8, 25.1, and 43.0 days in MSS+YW, MSS, and NM treatments, respectively. Addition of MSS+YW mix and MSS alone to native soil increased water infiltration, lowering surface runoff water volume and dimethazone residues in runoff following natural rainfall events.

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Pyrethrins and Piperonyl Butoxide Adsorption to Soil Organic Matter

Cited by 15 publications

References 18 publications

Adsorption of lambda-cyhalothrin and cypermethrin on two typical Chinese soils as affected by copper

Adsorption of lambda-cyhalothrin and cypermethrin on two typical Chinese soils as affected by copper

Impact of soil amendments on metribuzin and DCPA half-lives and mobility into agricultural runoff water

Mitigation of dimethazone residues in soil and runoff water from agricultural field

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