Occurrence of Fipronil in residential house dust in the presence and absence of pets: a hint for a comprehensive toxicological assessment

Cecilia Testa, Severyn Salis, Nicola Rubattu, Paola Roncada, Roberto Miniero, Gianfranco Brambilla

Research output: Contribution to journalArticlepeer-review

Abstract

The presence of the insecticide Fipronil and its main products of toxicological relevance, namely Sulfone and Desulfinyl, was assessed in 161 residential house dust samples in the absence (N = 101) and presence (N = 60) of cats and dogs in Italy. High-resolution mass spectrometry analysis revealed a significant difference (p < 0.001) in the dust contamination in the presence of pets (median: 467 vs. 24 ng/g dry weight), even if the highest value was found in the absence of pets (82,069 vs. 67,799 ng/g dry weight). Fipronil intake estimates from dust in toddlers, computed according to US-EPA and EU-ECHA guidelines, ranged from 333 to 556 and from 20 to 34 ng/kg per day for acute and chronic scenario, respectively. Dust seemed not able itself to lead to Fipronil overexposure with respect to acute and chronic toxicity health-based guidance values. Kittens were potentially overexposed to Fipronil under both acute (26,076 ng/kg per day) and chronic (1,633 ng/kg per day) scenarios. The mild symptomatology associated with acute intoxication could possibly determine case underreporting within pharmacosurveillance schemes. Its administration was estimated in 7.3-9.7 tons per year. Such a range suggests its prudent use under strict veterinary control to prevent pest resistance and ecotoxicological outcomes.

Original languageEnglish
Pages (from-to)441-448
Number of pages8
JournalJournal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes
Volume54
Issue number6
DOIs
Publication statusPublished - 2019

Keywords

  • Air Pollution, Indoor/analysis
  • Animals
  • Cats
  • Dogs
  • Dust/analysis
  • Environmental Exposure/analysis
  • Insecticides/analysis
  • Italy
  • Pets
  • Pyrazoles/analysis
  • Risk Assessment/methods
  • Veterinary Drugs/analysis

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