Nakagawa Lia Emi, Costa Alan Roberto, Polatto Ricardo, Nascimento Cristiane Mazarin do, Papini Solange
Biological Institute, São Paulo, São Paulo, Brazil.
Municipal Secretariat of Health, São Paulo, São Paulo, Brazil.
Environ Toxicol Chem. 2017 Nov;36(11):2895-2898. doi: 10.1002/etc.3860. Epub 2017 Jun 22.
Residential indoor environments are potential sources of exposure to pyrethroids, which have low acute toxicity to humans but are allergenic and suspected endocrine disruptors. The present study evaluated the persistence of the pyrethroids cypermethrin and beta-cyfluthrin on indoor surfaces and in house dust. Cypermethrin and beta-cyfluthrin were applied and maintained on aluminum foils and in dust samples for 112 d under controlled conditions and for 12 mo in a test house; periodically, they were quantified by high-performance liquid chromatography. Cypermethrin and beta-cyfluthrin concentrations showed decreases of 10.1% and 7.7% on aluminum foils, and 12.7% and 16.4% in dust, respectively, at 112 d under controlled conditions. In the test house, cypermethrin and beta-cyfluthrin concentrations decreased by 40.3% and 60.2% on aluminum foils, and 29.6% and 56.2% in dust at the end of the study. The results show the considerable persistence of cypermethrin and beta-cyfluthrin indoors and indicate the risk of exposure to these products. Environ Toxicol Chem 2017;36:2895-2898. © 2017 SETAC.
住宅室内环境是接触拟除虫菊酯的潜在来源，拟除虫菊酯对人类的急性毒性较低，但具有致敏性且被怀疑是内分泌干扰物。本研究评估了氯氰菊酯和高效氯氟氰菊酯在室内表面和室内灰尘中的持久性。在受控条件下，将氯氰菊酯和高效氯氟氰菊酯施用于铝箔和灰尘样品上并保持112天，在测试房屋中保持12个月；定期通过高效液相色谱法定量分析。在受控条件下，112天时，铝箔上氯氰菊酯和高效氯氟氰菊酯的浓度分别下降了10.1%和7.7%，灰尘中分别下降了12.7%和16.4%。在测试房屋中，研究结束时，铝箔上氯氰菊酯和高效氯氟氰菊酯的浓度分别下降了40.3%和60.2%，灰尘中分别下降了29.6%和56.2%。结果表明氯氰菊酯和高效氯氟氰菊酯在室内具有相当的持久性，并表明存在接触这些产品的风险。《环境毒理学与化学》2017年；36:2895 - 2898。©2017 SETAC。
