Results 151 to 160 of about 7,911 (200)

CYP450-dependent biotransformation of the insecticide fipronil into fipronil sulfone can mediate fipronil-induced thyroid disruption in rats. [PDF]

Toxicological Sciences, 2012
In rats, the widely used insecticide fipronil increases the clearance of thyroxine (T(4)). This effect is associated with a high plasma concentration of fipronil sulfone, the fipronil main metabolite in several species including rats and humans. In sheep, following fipronil treatment, fipronil sulfone plasma concentration and thyroid disruption are ...
Béatrice B Roques, Véronique Gayrard, Isabelle Jouanin   +2 more
exaly   +6 more sources

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Sorption Kinetics of Fipronil on Soils

Bulletin of Environmental Contamination and Toxicology, 2014
Sorption kinetics of fipronil was studied on five soils of varying physico-chemical properties by batch equilibration method. Fipronil sorption on soils conformed to pseudo-second order kinetics and both the initial uptake rate and rate constant had a significant and positive correlation with clay content.
Anand, Singh, Anjana, Srivastava, P C, Srivastava   +2 more
openaire   +2 more sources

Insecticidal activity of the enantiomers of fipronil

Pest Management Science, 2003
Abstract The two enantiomers of the insecticide fipronil were made by preparative HPLC. The insecticidal activities of the racemic mixture and the two enantiomers against selected agricultural or household pests (cotton stainer, Dysdercus cingulatus F; grain weevil,
Harald B, Teicher, Britt, Kofoed-Hansen, Niels, Jacobsen   +2 more
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Elucidation of Fipronil Photodegradation Pathways

Journal of Agricultural and Food Chemistry, 2000
The phenylpyrazole insecticide fipronil (I) photolyzes to its desthio product (II) in aqueous solution. However, the necessity of an intervening oxidation to a sulfone intermediate (III) has not been resolved, and the photodegradation products of II have not been identified.
K K, Ngim, S A, Mabury, D G, Crosby
openaire   +2 more sources

Compatibility of entomopathogenic nematodes with fipronil

Journal of Helminthology, 2005
AbstractThe survival and infectivity of infective juveniles (IJs) of three species of entomopathogenic nematodes, Steinernema carpocapsae Weiser, S. arenarium (Artyukhovsky) (Rhabditida: Steinernematidae) and Heterorhabditis bacteriophora Poinar (Rhabditida: Heterorhabditidae), were determined after exposure to different concentrations (250, 500, 1000 ...
F, García del Pino, M, Jové
openaire   +2 more sources

Polypyrrole‐coated rubber foam sorbent for extraction of fipronil and fipronil sulfone in tea

SEPARATION SCIENCE PLUS, 2023
Abstract A polypyrrole‐coated rubber foam sorbent with a steel wire insert was developed for the magnetic solid phase extraction of fipronil and fipronil sulfone from tea samples for analysis by a gas chromatography‐electron capture detector.
Sonam Choden, Deki Deki, Suwatchanee Maneeratanachot, Nussana Lehman, Ekwipoo Kalkornsurapranee, Morakot Kaewpet, Dhassida Sooksawat, Itthipon Jeerapan, Apon Numnuam, Proespichaya Kanatharana, Panote Thavarungkul, Chongdee Thammakhet‐Buranachai   +11 more
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Rapid and Sensitive Quantitation of Fipronil and Its Metabolites Fipronil Sulfone, Fipronil Sulfide, and Fipronil Desulfinyl in Zebrafish Tissues by UHPLC‐MS/MS

Journal of Separation Science
ABSTRACT An ultra‐high performance liquid chromatography‐tandem mass spectrometry (UHPLC‐MS/MS) method was developed and validated for the simultaneous determination of fipronil and its three metabolites (fipronil sulfone, fipronil sulfide, and fipronil desulfinyl) in zebrafish tissues.
Meichen, Liu, Yingxia, Guo, Jinhe, Liu, Zihan, Tang, Yufeng, Guo, Xintao, Liu, Deshan, Zhou, Lei, Yin, Meiyun, Shi   +8 more
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Analytical Method for Fipronil and Fipronil Sulfone in Livestock Products Using LC-MS/MS

Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi), 2020
A rapid and sensitive method for the simultaneous determination of fipronil and fipronil sulfone (metabolite B) in livestock products was developed. The analytes were extracted from samples with acidic acetonitrile. The crude extracts were subjected to clean-up step using neutral alumina cartridge column.
Takatoshi, Sakai, Hiroyuki, Kikuchi, Hiromi, Nawata, Satoru, Nemoto, Hiroshi, Akiyama   +4 more
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Synthesis of fipronil sulfide, an active metabolite, from the parent insecticide fipronil

Tetrahedron Letters, 2001
Abstract A convenient procedure for the synthesis of fipronil sulfide, one of several active metabolites identified from the insecticide fipronil, has been developed. Reduction of fipronil with trifluoroacetic anhydride–sodium iodide in acetone, followed by flash chromatography afforded fipronil sulfide in 60% yield and >99.9 percent purity.
Aaron B Beeler, Daniel K Schlenk, John M Rimoldi   +2 more
openaire   +1 more source