PT - JOURNAL ARTICLE AU - Sebastien Ortega AU - Anne-Sophie Weiler AU - Martine Ott AU - Audrey Dazy AU - Frederic de Blay TI - Airborne concentration of limonene (a volatile organic compound (VOC)), when using a spray of 41 essential oils DP - 2013 Sep 01 TA - European Respiratory Journal PG - P1022 VI - 42 IP - Suppl 57 4099 - http://erj.ersjournals.com/content/42/Suppl_57/P1022.short 4100 - http://erj.ersjournals.com/content/42/Suppl_57/P1022.full SO - Eur Respir J2013 Sep 01; 42 AB - Introduction : Essential oils are more and more used and even sometimes recommended by the manufacturer to struggle against the allergens (mite, mold).Objective : To measure airborne concentration of limonene, while using a spray of 41 essentials oils recommended to reduce mite infestation.Materials and methods : The quantification of the major pre hapten (limonene) contained in the spray has been appreciated in two different ways. In the first case, the quantity of limonene in 4 pulverizations has been measured by weighing them, knowing that the product contains 4.5% of limonene. In the second case, 4 pulverizations of the spray of essential oils have been measured in a cabin of 9 m3, with a photoionization detector (ppbRAE3000® Katrem® France). For each quantification, tests were made 10 times. The choice of 4 pulverizations has been taken to follow the instructions recommended by the manufacturer.Results : The mass of limonene measured by weighing had a mean value of 57.7 +/- 2.0 mg (for 4 pulverizations). In the room of 9 m3, the theoretical airborne concentration according to the mass of limonene in the spray was estimated to 6.4 mg/m3. The direct measurement of limonene in the room was 15 mg/m3.Conclusion : It has been showed that concentration superior to 2.5 mg/m3 TVOC was able to have a significant impact on asthma symptoms. It’s important that the pulmonologists ask their patients about their use of essential oils, which can potentially worsen the asthma symptoms.