Kinetic resolution of the interactions between agrochemical products and adjuvant systems upon mixing

Webster, Graham R., Bisset, Nicole B., Cahill, David, Jones, Peter, Killick, Andrew, Hawley, Adrian and Boyd, Ben J. 2016, Kinetic resolution of the interactions between agrochemical products and adjuvant systems upon mixing, Journal of agricultural and food chemistry, vol. 64, no. 31, pp. 6139-6147, doi: 10.1021/acs.jafc.6b01673.

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Title Kinetic resolution of the interactions between agrochemical products and adjuvant systems upon mixing
Author(s) Webster, Graham R.
Bisset, Nicole B.
Cahill, DavidORCID iD for Cahill, David orcid.org/0000-0002-2556-0528
Jones, Peter
Killick, Andrew
Hawley, Adrian
Boyd, Ben J.
Journal name Journal of agricultural and food chemistry
Volume number 64
Issue number 31
Start page 6139
End page 6147
Total pages 9
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2016-08-10
ISSN 1520-5118
1520-5118
Keyword(s) adjuvant
mix-tank
pesticide
transfer
Science & Technology
Life Sciences & Biomedicine
Physical Sciences
Agriculture, Multidisciplinary
Chemistry, Applied
Food Science & Technology
Agriculture
Chemistry
LIQUID-CRYSTALLINE PARTICLES
CUTICULAR PENETRATION
FOLIAR UPTAKE
PESTICIDES
GLYPHOSATE
DELIVERY
FORMULATION
CUTICLES
SURFACES
DEPOSIT
Summary The addition of an adjuvant to a pesticide usually occurs in a mix-tank, before spray application to the crop. Their interaction is potentially crucial to overall efficacy but has received little attention from a physical-chemical perspective. Study was undertaken by laser diffraction, Raman spectroscopy, and small-angle X-ray scattering to resolve these physical processes. It was shown that migration of the pesticide into the adjuvant droplet occurred in all cases studied. The level of transfer was dependent upon adjuvant level, adjuvant solubility, and surfactant level. For suspension pesticides, dissolution of crystallites within the droplet occurred to a degree limited by solubility. The results directly demonstrate the transfer of the pesticide into the adjuvant carrier. This indicates that for emulsion-based pesticides, application to the target is likely as a homogeneously mixed droplet, whereas for suspension pesticides, solubility may limit transfer and dissolution, leading to heterogeneity in the applied particles.
Language eng
DOI 10.1021/acs.jafc.6b01673
Field of Research 030108 Separation Science
070199 Agriculture, Land and Farm Management not elsewhere classified
Socio Economic Objective 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30085792

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