Reactivity of neonicotinoid insecticides with carbonate radicals
The reaction of three chloronicotinoid insecticides, namely Imidacloprid (IMD), Thiacloprid (THIA) and Acetamiprid (ACT), with carbonate radicals (CO·₃⁻) was investigated. The second order rate constants (4 ± 1) × 10⁶, (2.8 ± 0.5) × 10⁵, and (1.5 ± 1) × 10⁵ M⁻¹ s⁻¹ were determined for IMD, THIA and...
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| Autores principales: | , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2012
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/128005 |
| Aporte de: |
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I19-R120-10915-128005 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Química Carbonate radicals Neonicotinoid indecticides Imidacloprid Thiacloprid Acetamiprid a-Aminoalkyl radical |
| spellingShingle |
Química Carbonate radicals Neonicotinoid indecticides Imidacloprid Thiacloprid Acetamiprid a-Aminoalkyl radical Dell'Arciprete, María Laura Soler, Juan M. Santos Juanes, Lucas Arques, Antonio Mártire, Daniel Osvaldo Furlong, Jorge Javier Pedro González, Mónica Cristina Reactivity of neonicotinoid insecticides with carbonate radicals |
| topic_facet |
Química Carbonate radicals Neonicotinoid indecticides Imidacloprid Thiacloprid Acetamiprid a-Aminoalkyl radical |
| description |
The reaction of three chloronicotinoid insecticides, namely Imidacloprid (IMD), Thiacloprid (THIA) and Acetamiprid (ACT), with carbonate radicals (CO·₃⁻) was investigated. The second order rate constants (4 ± 1) × 10⁶, (2.8 ± 0.5) × 10⁵, and (1.5 ± 1) × 10⁵ M⁻¹ s⁻¹ were determined for IMD, THIA and ACT, respectively. The absorption spectra of the organic intermediates formed after CO·₃⁻ attack to IMD is in line with those reported for α-aminoalkyl radicals. A reaction mechanism involving an initial charge transfer from the amidine nitrogen of the insecticides to CO·₃⁻ is proposed and further supported by the identified reaction products. The pyridine moiety of the insecticides remains unaffected until nicotinic acid is formed. CO·₃⁻ radical reactivity towards IMD, ACT, and THIA is low compared to that of HO• radicals, excited triplet states, and ¹O₂, and is therefore little effective in depleting neonicotinoid insecticides. |
| format |
Articulo Articulo |
| author |
Dell'Arciprete, María Laura Soler, Juan M. Santos Juanes, Lucas Arques, Antonio Mártire, Daniel Osvaldo Furlong, Jorge Javier Pedro González, Mónica Cristina |
| author_facet |
Dell'Arciprete, María Laura Soler, Juan M. Santos Juanes, Lucas Arques, Antonio Mártire, Daniel Osvaldo Furlong, Jorge Javier Pedro González, Mónica Cristina |
| author_sort |
Dell'Arciprete, María Laura |
| title |
Reactivity of neonicotinoid insecticides with carbonate radicals |
| title_short |
Reactivity of neonicotinoid insecticides with carbonate radicals |
| title_full |
Reactivity of neonicotinoid insecticides with carbonate radicals |
| title_fullStr |
Reactivity of neonicotinoid insecticides with carbonate radicals |
| title_full_unstemmed |
Reactivity of neonicotinoid insecticides with carbonate radicals |
| title_sort |
reactivity of neonicotinoid insecticides with carbonate radicals |
| publishDate |
2012 |
| url |
http://sedici.unlp.edu.ar/handle/10915/128005 |
| work_keys_str_mv |
AT dellarcipretemarialaura reactivityofneonicotinoidinsecticideswithcarbonateradicals AT solerjuanm reactivityofneonicotinoidinsecticideswithcarbonateradicals AT santosjuaneslucas reactivityofneonicotinoidinsecticideswithcarbonateradicals AT arquesantonio reactivityofneonicotinoidinsecticideswithcarbonateradicals AT martiredanielosvaldo reactivityofneonicotinoidinsecticideswithcarbonateradicals AT furlongjorgejavierpedro reactivityofneonicotinoidinsecticideswithcarbonateradicals AT gonzalezmonicacristina reactivityofneonicotinoidinsecticideswithcarbonateradicals |
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Repositorios |
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