Volatilisation of pesticides under field conditions: inverse modelling and pesticide fate models

Houbraken, Michael; Berg, F. van den; Ellis, Clare M Butler; Dekeyser, Donald; Nuyttens, David; Schampheleire, Mieke De; Spanoghe, Pieter

doi:10.1002/ps.4149

Cited by 25 publications

(10 citation statements)

References 63 publications

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“…Notably, there was almost no weight loss with PILs 3 and 5, which had lower melting points, during the 12 h of the test. However, the volatilization percentage of PIL1 (12.24%) was higher than that of PYR (11.78%), which was not in accordance with a preceding study that reported that fatty acids showed considerable potential to reduce volatilization of pesticide ions . This result could be attributed to the higher volatilization of its counter anion.…”

Section: Resultscontrasting

confidence: 89%

“…However, the volatilization percentage of PIL1 (12.24%) was higher than that of PYR (11.78%), which was not in accordance with a preceding study that reported that fatty acids showed considerable potential to reduce volatilization of pesticide ions. 36 This result could be attributed to the higher volatilization of its counter anion. The trend on the results of the PILs paired with different anions indicated that the volatility was related to the structure of the anion.…”

Section: ■ Resultsmentioning

confidence: 99%

“…34 In a field trial, the volatilization percentage was found to be 25.1% over 14 h, and it was up to 96.9% from a glass surface. 35,36 In addition, PYR is sensitive to sunlight and unstable under UV light, which leads to photodegradation and failure to control the occurrence of diseases in farming. 37 The degradation rate of PYR was approximately 60% in 3 h, under a high-pressure mercury lamp delivering radiation at a maximum wavelength of 650 nm.…”

Section: ■ Introductionmentioning

confidence: 99%

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Pyrimethanil Ionic Liquids Paired with Various Natural Organic Acid Anions for Reducing Its Adverse Impacts on the Environment

Tang

et al. 2019

J. Agric. Food Chem.

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In this study, nine pyrimethanil ionic liquids (PILs) were synthesized through an acid−base reaction with nine naturally derived organic acid anions to improve the physicochemical properties and reduce the environmental adverse impacts. The PILs presented lower volatilization, higher photostability, better soil adsorption capacity, and improved fungicidal activity relative to pyrimethanil. When the length of the carbon chains in the anions was increased, the PILs showed better properties in terms of melting point, water solubility, volatility, and surface tension. The photostabilities and fungicidal activities of the PILs were significantly improved when cyclic compounds were used as the paired anion ions. With enhanced physicochemical properties and better fungicidal activity, PIL7 was selected as the best alternative to pyrimethanil. The intrinsic disadvantages of pyrimethanil could be surmounted using the system developed in the study; thus, ILs could have immense potential in the development of eco-friendly and efficient fungicides in the future.

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Section: Resultscontrasting

confidence: 89%

Section: ■ Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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Pyrimethanil Ionic Liquids Paired with Various Natural Organic Acid Anions for Reducing Its Adverse Impacts on the Environment

Tang

et al. 2019

J. Agric. Food Chem.

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“…The transfer rates of OCDPE from prepared tea to the infusion were 6.0–14.8 %; the mean value of which was 8.98 %. The transfer efficiency of the pesticide residue into the infusion depends on its water solubility, partition coefficient, and low vapor pressure (Iizuka and Shimizu 2014; Fantke et al 2012; Houbraken et al 2016). Based on the present research, the lower transfer rate of OCDPE from prepared tea to the infusion may be due to its hydrophobic character (insolubility in water) and high vapor pressure.…”

Section: Resultsmentioning

confidence: 99%

Dissipation behavior of octachlorodipropyl ether residues during tea planting and brewing process

Liao

Shi

Cao

et al. 2016

Environ Monit Assess

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The dissipation behavior of octachlorodipropyl ether (OCDPE) residues in fresh tea shoots and in tea prepared under field conditions was investigated, and the transfer of residues from brewed tea to tea infusion was determined. OCDPE levels in tea shoots, prepared tea, tea infusion, and spent tea leaves were determined using a sensitive and simple method. The dissipation of OCDPE is fairly slow in tea shoots and prepared tea, with half-life values of 5.10 and 5.46 days, respectively. The degradation rates of OCDPE residues in tea processing were 23.9–43.1 %. The terminal residues of OCDPE in tea shoots and prepared tea samples after 20 and 30 days of OCDPE application were higher than 0.01 mg/kg. However, OCDPE’s transfer rates from brewed tea to tea infusion were only 6.0–14.8 %. Further studies on risk assessment of OCDPE residue in tea on the basis of the relationship of OCDPE in prepared tea and infusion are warranted.

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“…air velocity and turbulence) and surface properties (e.g. temperature and roughness) (Leistra and Wolters 2004; FOCUS 2008; Lichiheb et al 2014; Houbraken et al 2016). We used default values of 0.06 and 0.1 cm for the thickness of the boundary air layers on plant leaves and soil surfaces, respectively (van den Berg et al 2016); sensitivity of rate of pesticide volatilisation to the value of d (Fig.…”

Section: Methodsmentioning

confidence: 99%

How does exposure to pesticides vary in space and time for residents living near to treated orchards?

Wong

Garthwaite

Ramwell

et al. 2017

Environ Sci Pollut Res

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This study investigated changes over 25 years (1987–2012) in pesticide usage in orchards in England and Wales and associated changes to exposure and risk for resident pregnant women living 100 and 1000 m downwind of treated areas. A model was developed to estimate aggregated daily exposure to pesticides via inhaled vapour and indirect dermal contact with contaminated ground, whilst risk was expressed as a hazard quotient (HQ) based on estimated exposure and the no observed (adverse) effect level for reproductive and developmental effects. Results show the largest changes occurred between 1987 and 1996 with total pesticide usage reduced by ca. 25%, exposure per unit of pesticide applied slightly increased, and a reduction in risk per unit exposure by factors of 1.3 to 3. Thereafter, there were no consistent changes in use between 1996 and 2012, with an increase in number of applications to each crop balanced by a decrease in average application rate. Exposure per unit of pesticide applied decreased consistently over this period such that values in 2012 for this metric were 48–65% of those in 1987, and there were further smaller decreases in risk per unit exposure. All aggregated hazard quotients were two to three orders of magnitude smaller than one, despite the inherent simplifications of assuming co-occurrence of exposure to all pesticides and additivity of effects. Hazard quotients at 1000 m were 5 to 16 times smaller than those at 100 m. There were clear signals of the impact of regulatory intervention in improving the fate and hazard profiles of pesticides used in orchards in England and Wales over the period investigated.Electronic supplementary materialThe online version of this article (10.1007/s11356-017-0064-5) contains supplementary material, which is available to authorized users.

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Volatilisation of pesticides under field conditions: inverse modelling and pesticide fate models

Cited by 25 publications

References 63 publications

Pyrimethanil Ionic Liquids Paired with Various Natural Organic Acid Anions for Reducing Its Adverse Impacts on the Environment

Pyrimethanil Ionic Liquids Paired with Various Natural Organic Acid Anions for Reducing Its Adverse Impacts on the Environment

Dissipation behavior of octachlorodipropyl ether residues during tea planting and brewing process

How does exposure to pesticides vary in space and time for residents living near to treated orchards?

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