Acetochlor sorption and degradation in limestone subsurface and aquifers

Janniche, Gry Sander; Mouvet, Christophe; Albrechtsen, Hans‐Jørgen

doi:10.1002/ps.2011

Cited by 22 publications

(12 citation statements)

References 48 publications

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“…However, isoproturon was also mineralized in water from the spring (25-41%, data not shown). Acetochlor was not mineralized in any of the groundwater samples (data not shown) though mineralization has been reported previously in aquifer samples from the catchment (Janniche et al, 2010b). The herbicide mineralization ability observed in groundwater from Pz5 is in accordance with this being the most agriculturally affected sample.…”

Section: Mineralization Abilitysupporting

confidence: 88%

Microbial Community-Level Physiological Profiles (CLPP) and herbicide mineralization potential in groundwater affected by agricultural land use

Janniche

Spliid

Albrechtsen

2012

Journal of Contaminant Hydrology

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Section: Mineralization Abilitysupporting

confidence: 88%

Microbial Community-Level Physiological Profiles (CLPP) and herbicide mineralization potential in groundwater affected by agricultural land use

Janniche

Spliid

Albrechtsen

2012

Journal of Contaminant Hydrology

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“…Acetochlor binds strongly to organic matter in the soil (Hiller et al, 2008), which makes it unlikely to leach into groundwater. Additionally, studies have shown that acetochlor is readily degradable in topsoil and in the subsurface (Janniche et al, 2010). Accordingly, it has only rarely been detected in surface water and groundwater (Barbash et al, 1999;Kolpin et al 1996).…”

Section: Applied Pesticides In the Ncp And Their Potential Environmenmentioning

confidence: 99%

Pesticide use in the wheat-maize double cropping systems of the North China Plain: Assessment, field study, and implications

Brauns

Jakobsen

Song

et al. 2018

Science of The Total Environment

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In the North China Plain (NCP), rising inputs of pesticides have intensified the environmental impact of farming activities in recent decades by contributing to surface water and groundwater contamination. In response to this, the Chinese government imposed stricter regulations on pesticide approval and application, and better monitoring strategies are being developed. However, sufficient and well-directed research on the accumulation and impact of different pesticides is needed for informed decision-making. In this study, current pesticide use, and recent and current research on water contamination by pesticides in the NCP are reviewed and assessed. Additionally, a small-scale field study was performed to determine if residuals from currently-used pesticides in the NCP can be detected in surface water, and in connected shallow groundwater. The contaminants of interest were commonly used pesticides on winter wheat-summer maize fields (the dominant cropping system in the NCP), such as 2,4-D and atrazine. Sampling took place in May, July, and October 2013; and March 2014. Results from our literature research showed that sampling is biased towards surface water monitoring. Furthermore, most studies focus on organic chlorinated pesticides (OCPs) like the isomers of dichlorodiphenyltrichloroethane (DDT) and hexachlorocyclohexane (HCH), which were banned in China in 1983. However, currently-used herbicides like 2,4-D and atrazine were detected in river water and groundwater in all samplings of our field study. The highest concentrations of 2,4-D and atrazine were found in the river water, ranging up to 3.00 and 0.96μg/L, respectively. The monitoring of banned compounds was found to be important because several studies indicate that they are still accumulating in the environment and/or are still illegally in use. However, supported by our own data, we find that the monitoring in groundwater and surface water of currently permitted pesticides in China needs equal attention, and should therefore be increased.

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“…Acetochlor [2‐chloro‐N‐(ethoxymethyl)‐N‐(2‐ethyl‐6‐methylphenyl) acetamide] is a chloroacetanilide herbicide that is mostly used to control pre‐emergent grass weeds in various cropping systems. Acetochlor has a high water solubility of 223 mg L −1 and a vapor pressure of 4.5 × 10 −3 mPa (Janniche et al, 2010). The reported half‐life of acetochlor ranges from 4.6 to 9.3 d in surface soils (Ye, 2003; Taylor et al, 2005; Oliveira et al, 2013).…”

mentioning

confidence: 99%

Enhanced Dissipation of Selected Herbicides in a Simulated Organic Matrix Biobed: A System to Control On‐Farm Point‐Source Pollution

Chu

Eivazi

2018

J of Env Quality

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Most farms have a centralized location to fill spray tanks with pesticides and to flush and clean application equipment. These sites, depending on the frequency of use, could be significant sources of surface and groundwater contamination. One approach to minimize this contamination is to install a treatment system, such as a biobed. This study sought to construct a biobed and test the effects of different biomix materials in enhancing the dissipation of herbicides widely used in crop production. The four types of biomix evaluated had mixing ratios by volume of (1) 12.5% straw:62.5% soil:25% peat, (2) 25% straw:50% soil:25% peat, (3) 12.5% straw:62.5% soil:25% compost, and (4) 25% straw:50% soil:25% compost. The dissipation rates of acetochlor, atrazine, pendimethalin, and trifluralin at different incubation times over 90 d were evaluated. The dissipation of atrazine and pendimethalin in the biomixes were faster than in soil. The half-lives for atrazine were 27.8 d in soil and 14.3 to 20.2 d in the biomixes and those of pendimethalin were 25.5 d in soil and 11.9 to 14.8 d in the biomixes. The dissipation rates and half-lives of acetochlor were similar to those in soil; the trifluralin dissipation rates were slower in the biomixes. The phenol oxidase activity was higher in the peat biomixes than in those containing compost. The results showed that biobed materials, especially those with peat, are effective in degrading selected herbicides.

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Acetochlor sorption and degradation in limestone subsurface and aquifers

Cited by 22 publications

References 48 publications

Microbial Community-Level Physiological Profiles (CLPP) and herbicide mineralization potential in groundwater affected by agricultural land use

Microbial Community-Level Physiological Profiles (CLPP) and herbicide mineralization potential in groundwater affected by agricultural land use

Pesticide use in the wheat-maize double cropping systems of the North China Plain: Assessment, field study, and implications

Enhanced Dissipation of Selected Herbicides in a Simulated Organic Matrix Biobed: A System to Control On‐Farm Point‐Source Pollution

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