INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS
Аутори
Radojković, AleksandarRadović, Marko
Krnjajić, Slobodan
Kostić, Igor
Mitrović, Jelena
Branković, Zorica
Branković, Goran
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Alumina powders synthesized by combustion method were applied on
uninfested grains of bean to examine their insecticide effect against bean weevil
(Acanthoscelides obtectus). Effects of pH value (6, 8 and 10) of the precursor
solution, as well as citric/nitric molar ratio (0.5, 0.8 and 1.2) on the powder
properties were observed. XRD analysis of the samples calcined at 1200 ºC for 1 h
showed only the presence of α–Al2O3 phase. SEM analysis revealed difference
between the samples in respect to particle size, which varied from nano- and
submicron size to characteristic rectangular particles of several µm and larger. The
powder obtained from the solution with the pH value of 10 had the highest content
of submicron and nanosized particles. Mortality rate of both male and female insects
after seven days of exposure was the highest right for this sample, indicating that the
particle size has the greatest influence on insecticide properties of alumina powders.
Thus, by increasing ...the pH of the precursor solution it is possible to prevent higher
degree of particles agglomeration. The lowest insecticide efficiency of the powder
synthesized at pH = 6 can be prescribed to a weak chelating effect of the citric acid
that allowed higher coarsening rate of the particles. When it comes to citric/nitric
molar ratio at pH = 8, it had no significant effect on mortality rates, which were
higher for male insects in general, while a slight efficiency trend was observed
towards fuel lean region, i.e. when the ratio was ≤ 0.8.
Кључне речи:
alumina, bean weevil, insecticideИзвор:
3rd Conference of the Serbian Society for Ceramic Materials, 2015, 76-Издавач:
- Društvo za keramičke materijale Srbije
Финансирање / пројекти:
- 0-3D наноструктуре за примену у електроници и обновљивим изворима енергије: синтеза, карактеризација и процесирање (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45007)
Институција/група
Institut za multidisciplinarna istraživanjaTY - CONF AU - Radojković, Aleksandar AU - Radović, Marko AU - Krnjajić, Slobodan AU - Kostić, Igor AU - Mitrović, Jelena AU - Branković, Zorica AU - Branković, Goran PY - 2015 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2336 AB - Alumina powders synthesized by combustion method were applied on uninfested grains of bean to examine their insecticide effect against bean weevil (Acanthoscelides obtectus). Effects of pH value (6, 8 and 10) of the precursor solution, as well as citric/nitric molar ratio (0.5, 0.8 and 1.2) on the powder properties were observed. XRD analysis of the samples calcined at 1200 ºC for 1 h showed only the presence of α–Al2O3 phase. SEM analysis revealed difference between the samples in respect to particle size, which varied from nano- and submicron size to characteristic rectangular particles of several µm and larger. The powder obtained from the solution with the pH value of 10 had the highest content of submicron and nanosized particles. Mortality rate of both male and female insects after seven days of exposure was the highest right for this sample, indicating that the particle size has the greatest influence on insecticide properties of alumina powders. Thus, by increasing the pH of the precursor solution it is possible to prevent higher degree of particles agglomeration. The lowest insecticide efficiency of the powder synthesized at pH = 6 can be prescribed to a weak chelating effect of the citric acid that allowed higher coarsening rate of the particles. When it comes to citric/nitric molar ratio at pH = 8, it had no significant effect on mortality rates, which were higher for male insects in general, while a slight efficiency trend was observed towards fuel lean region, i.e. when the ratio was ≤ 0.8. PB - Društvo za keramičke materijale Srbije C3 - 3rd Conference of the Serbian Society for Ceramic Materials T1 - INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS SP - 76 UR - https://hdl.handle.net/21.15107/rcub_rimsi_2336 ER -
@conference{ author = "Radojković, Aleksandar and Radović, Marko and Krnjajić, Slobodan and Kostić, Igor and Mitrović, Jelena and Branković, Zorica and Branković, Goran", year = "2015", abstract = "Alumina powders synthesized by combustion method were applied on uninfested grains of bean to examine their insecticide effect against bean weevil (Acanthoscelides obtectus). Effects of pH value (6, 8 and 10) of the precursor solution, as well as citric/nitric molar ratio (0.5, 0.8 and 1.2) on the powder properties were observed. XRD analysis of the samples calcined at 1200 ºC for 1 h showed only the presence of α–Al2O3 phase. SEM analysis revealed difference between the samples in respect to particle size, which varied from nano- and submicron size to characteristic rectangular particles of several µm and larger. The powder obtained from the solution with the pH value of 10 had the highest content of submicron and nanosized particles. Mortality rate of both male and female insects after seven days of exposure was the highest right for this sample, indicating that the particle size has the greatest influence on insecticide properties of alumina powders. Thus, by increasing the pH of the precursor solution it is possible to prevent higher degree of particles agglomeration. The lowest insecticide efficiency of the powder synthesized at pH = 6 can be prescribed to a weak chelating effect of the citric acid that allowed higher coarsening rate of the particles. When it comes to citric/nitric molar ratio at pH = 8, it had no significant effect on mortality rates, which were higher for male insects in general, while a slight efficiency trend was observed towards fuel lean region, i.e. when the ratio was ≤ 0.8.", publisher = "Društvo za keramičke materijale Srbije", journal = "3rd Conference of the Serbian Society for Ceramic Materials", title = "INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS", pages = "76", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2336" }
Radojković, A., Radović, M., Krnjajić, S., Kostić, I., Mitrović, J., Branković, Z.,& Branković, G.. (2015). INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS. in 3rd Conference of the Serbian Society for Ceramic Materials Društvo za keramičke materijale Srbije., 76. https://hdl.handle.net/21.15107/rcub_rimsi_2336
Radojković A, Radović M, Krnjajić S, Kostić I, Mitrović J, Branković Z, Branković G. INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS. in 3rd Conference of the Serbian Society for Ceramic Materials. 2015;:76. https://hdl.handle.net/21.15107/rcub_rimsi_2336 .
Radojković, Aleksandar, Radović, Marko, Krnjajić, Slobodan, Kostić, Igor, Mitrović, Jelena, Branković, Zorica, Branković, Goran, "INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS" in 3rd Conference of the Serbian Society for Ceramic Materials (2015):76, https://hdl.handle.net/21.15107/rcub_rimsi_2336 .