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1
Content available remote Development of ultrasound-assisted extraction followed by solid-phase extraction followed by dispersive liquid–liquid microextraction followed by gas chromatography for the sensitive determination of diazinon in garden parsley as vegetable samples
100%
Rezaee M. , Khalilian F. , Pourjavid M. R.
Acta Chromatographica
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2023
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tom Vol. 35, no. 4
347--353
EN
A new pretreatment method termed ultrasound-assisted extraction (UAE) which is combined with solid-phase extraction which is combined with dispersive liquid-liquid microextraction (SPE-DLLME) followed by gas chromatography-flame ionization detector (GC-FID) analysis has been developed for the determination of diazinon in garden parsley as vegetable samples. The analyte was extracted from garden parsley sample using ultrasound-assisted extraction followed by solid-phase extraction followed by dispersive liquid-liquid microextraction. Various parameters that affect the efficiency of the extraction techniques have been optimized. The calibration plot was linear in the range of 5.0–1,000 μg kg⁻¹ with detection limit of 1.0 μg kg⁻¹ for diazinon in garden parsley samples. The results confirm the suitability of the UAE-SPE-DLLME-GC-FID as a sensitive method for the analysis of the targeted analyte in garden parsley samples.
2
Selected insecticides and acaricide as modifiers of the metabolic rate in the beetle Anoplotrupes stercorosus under various thermal conditions: the effect of pirimicarb, diazinon and fenazaquin
72%
Piechowicz B. , Gola J. , Grodzicki P. , Piechowicz I.
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nr 3
EN
In 2007 and 2008 studies aimed to determine the effect of preparation belonging to carbamate compounds (Pirimor 500 WG), organophosphorus compounds (Diazol 500 EW), and quinazolin compounds (Magus 200 SC), on the oxygen consumption rate by adult beetles Anoplotrupes stercorosus were performed. Experiments were carried out under diverse ambient temperatures (14, 19, 24 i 29°C) using two ways of intoxication – contact intoxication or intoxication by ingestion of the biocide. In control insects the ambient temperature affected the oxygen demand only to a small extent. Usually, insecticide preparations which were used, markedly potentiated the oxygen consumption. In those experimental groups significant increases of oxygen consumption as the effect of ambient temperature elevation were noted. The mode of the intoxication influenced oxygen consumption only very slightly. The highest values of oxygen consumption were noted in animals treated by contact intoxication.
PL
W 2007 i 2008 roku przeprowadzono badania wpływu preparatów owadobójczych z grupy karbaminianów (Pirimor 500 WG), insektycydów fosfoorganicznych (Diazol 500 EW) i pochodnych chinazolin (Magus 200 SC) na tempo konsumpcji tlenu dorosłych osobników Anoplotrupes stercorosus. Badania przeprowadzono w odmiennych warunkach termicznych otoczenia (14, 19, 24 i 29°C), stosując dwa sposoby intoksykacji – kontaktową oraz poprzez traktowanie biocydami pokarmu. Uzyskane wyniki wskazują, że temperatura otoczenia tylko w niewielkim stopniu wpływała na zapotrzebowanie tlenowe owadów z grupy kontrolnej. Zastosowane preparaty owadobójcze zwykle nasilały konsumpcję tlenu. W grupie zwierząt intoksykowanych ulegała ona również istotnemu zwiększeniu wraz ze wzrostem temperatury otoczenia. Większe wartości tempa metabolizmu odnotowano u zwierząt traktowanych kontaktowo w stosunku do zwierząt traktowanych pokarmowo.
3
Estimation of non-specific immunity responses to selenium in diazinon intoxicated animals
72%
Swiecicka-Grabowska G. , Zasadowski A.
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nr 1
4
Effectiveness of chemical control of strawberry weevil Otiorhynchus spp. in strawberry plantations
72%
Labanowska B. H.
Journal of Fruit and Ornamental Plant Research
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1994
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tom 02
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nr 4
5
Content available Sonondegradation of organophosphorus pesticides in water
58%
Dehghani M. H. , Fadaei A.
Environment Protection Engineering
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2013
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tom Vol. 39, nr 4
5--14
EN
Organophosphorus pesticides (OPPs), such as diazinon and malathion, are widely found in water resources. When absorbed by human organisms, OPP s are very toxic mainly because they deactivate acetyl cholinesterase. In the present study, the degradation of diazinon and malathion was investigated. The experiments were conducted for diazinon concentrations of 100, 300, 500 μg/dm3 and malathion concentrations of 200,400,600 μg/ dm3. Sonochemical examination was done using an ultrasonic reactor at 130 kHz and 500 NW for five times, and then the amount of the pesticide in a sample was measured by the gas chromatography with a flame ionization detector (GC-FID).The highest degradation of malathion and diazinon by the sonolysis process occurred at pH 9 and 3, respectively. The study demonstrates that malathion and diazinon could be effectively degraded by ultrasonic irradiation.
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Circadian and seasonal changes in honeybee (Apis mellifera) worker susceptibility to diazinon, teflubenzuron, pirimicarb, and indoxacarb
58%
Piechowicz B. , Grodzicki P. , Stawarczyk M. , Stawarczyk K.
Polish Journal of Environmental Studies
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2013
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tom 22
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nr 5
EN
Circadian and seasonal changes in the susceptibility of honeybee (Apis mellifera) workers to intoxication by organophosphate, benzoylphenyl urea, carbamate, and oxadiazine insecticides have been studied from 2008 to 2009. Animals were collected in two apiaries located in the surroundings of Mielec and Tarnobrzeg in the Sub-Carpathian Province. The experiments consisted of intoxication by select xenobiotics of the subsequent groups of animals in two-hour intervals for a period of 24 hours and the analysis of their survivability. Experiments were carried out in spring and summer. The results suggest that the susceptibility of bees to different groups of insecticides varies significantly, both in the circadian and seasonal rhythms.
7
Content available Metoda oznaczania bromofosu, diazinonu i metylopirymifosu w owocach i warzywach
58%
Zadrozinska J.
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tom 28
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nr 1
8
Smiertelnosc pedrakow Phyllopertha horticola przy lacznym stosowaniu Heterorhabditis megidis i diazynonu
44%
Kowalska J.
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nr 2
735-737
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