A Thermo-Cavitation Method to Determine Organochlorine Pesticides in Gas and Particle Phases Collected in Polyurethane Foam Used in Passive Air Samplers
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Persistent organic pollutants (POPs) are globally dispersed substances considered to have adverse effects on health and ecosystems. Organochlorine pesticides (OCPs) are POPs. OCPs can be collected from the air by passive samplers using polyurethane foam (PUF). POPs in PUF are generally extracted by Soxhlet, considered as reference extraction method. We offer a different methodology approach to extract 16 OCPs from the PUF. This technology extracts, filters, collects the sample and evaporates the solvent, without sample transfer. It is a modification of the ultrasound-assisted extraction micro-scale cell (M-UAE-MSC) previously patented by our group. A full factorial experimental design (23 centred) was used to optimise the extraction conditions. The most desirable conditions were 50 °C, 40% ultrasound potency and 20-min extraction time, two extractions. OCP recoveries ranged from 67 to 110%. OCP recoveries were equivalent by M-UAE-MSC and Soxhlet techniques. The method was not suitable for five OCPs, and further refinement is needed. Method linearity (r2) was ≥ 0.98. Limits of detection were observed between 1.2 and 4.6 ng PUF−1, while limits of quantification were found between 3.9 and 15.2 ng PUF−1. The method was applied to determine OCPs collected by PUF passive samplers in Mexico. Endosulfan I was the OCP most frequently observed. The M-UAE-MSC optimised extraction conditions, decreased the extraction time from several hours to less than 1 h and reduced three times the solvent consumption with respect to Soxhlet. This afforded a decrease in the waste generation and a reduction in the OCP-extraction cost up to 80%. The results of this study reveal an efficient and consistent procedure, as well as a simpler, faster, cost-saving and more environmentally friendly method to determine OCPs collected by PUF in passive samplers compared to Soxhlet extraction.
KeywordsPOPs PAS UAE-MSC Air pollution Atmospheric aerosol
GEAL acknowledges CONACyT for PhD scholarship research number 258102. The authors thank Araceli Peña-Álvarez and Violeta Mugica-Álvarez for their valuable comments. We also acknowledge Abraham Lara, Wilfrido Gutiérrez, Manuel García, Bárbara Cuesta, Alfredo Rodriguez, Claudio Amezcua and Saúl Armendariz for their technical support. We thank PRS and Diego Alfaro for the review of the English language.
This study was financially supported by projects PAPIIT-UNAM (IN116614), Programa Bilateral Mexico-Argentina CONACyT-MINCyT (191335), Red Temática de Toxicología de Plaguicidas (280045) and RUOA-UNAM.
- Amador-Muñoz, O., Santos-Medina, G., Jazcilevich, A. & Valle, B. (2014). Celda de extracción a microescala, asistida por ultrasonido, con y sin reflujo, acoplada a un sistema de filtración. IMPI, Patent No. 325624.Google Scholar
- Baron, P.A. & Willeke, K. (2001). Aerosol measurement. Principles, techniques and applications. 2nd Ed., Wiley Interscience.Google Scholar
- Bergman, A.; Heindel, J.J.; Jobling, S.; Kidd, K.A. & Zoeller, R.T. (2013). State of the science of endocrine disrupting chemicals 2012. Summary of decision makers. WHO and UNEP. http://apps.who.int/iris/bitstream/handle/10665/78102/WHO_HSE_PHE_IHE_2013.1_eng.pdf;jsessionid=F61ABFD4DA5666C899BA5576DA3A7A92?sequence=1. Accessed 10 May 2018.
- Beristain-Montiel, E., Villalobos-Pietrini, R., Arias-Loaiza, G. E., Gómez-Arroyo, S. L., & Amador-Muñoz, O. (2016). An innovative ultrasound assisted extraction micro-scale cell combined with gas chromatography/mass spectrometry in negative chemical ionization to determine persistent organic pollutants in air particulate matter. Journal of Chromatography A, 1477, 100–107. https://doi.org/10.1016/j.chroma.2016.11.043.CrossRefGoogle Scholar
- Harner, T., Shoeib, M., Diamond, M. L., Stern, G., & Rosenberg, B. (2004). Using passive air samplers to assess urban-rural trends for persistent organic pollutants. 1. Polychlorinated biphenyls and organochlorine pesticides. Environmental Science & Technology, 38(17), 4474–4483. https://doi.org/10.1021/es040302r.CrossRefGoogle Scholar
- Martínez-Valenzuela, C., Gómez-Arroyo, S., Villalobos-Pietrini, R., Waliszewski, S., Calderón-Segura, M. E., Félix-Gastélum, R., et al. (2009). Genotoxic biomonitoring of agricultural workers exposed to pesticides in the north of Sinaloa State, Mexico. Environment International, 35(8), 1155–1159. https://doi.org/10.1016/j.envint.2009.07.010.CrossRefGoogle Scholar
- Menichini, E., Iacovella, N., Monfredini, F., & Turrio-Baldassarri, L. (2007). Atmospheric pollution by PAHs, PCDD/Fs and PCBs simultaneously collected at a regional background site in central Italy and at an urban site in Rome. Chemosphere, 69(3), 422–434. https://doi.org/10.1016/j.chemosphere.2007.04.078.CrossRefGoogle Scholar
- Pozo, K., Harner, T., Shoeib, M., Urrutia, R., Barra, R., Parra, R., et al. (2004). Passive-sampler derived air concentrations of persistent organic pollutants on a north-south transect in Chile. Environmental Science & Technology, 38, 6529–6537. https://doi.org/10.1021/es049065i.CrossRefGoogle Scholar
- Pozo, K., Harner, T., Lee, S. C., Wania, F., Muir, D. C. G., & Jones, K. C. (2009). Seasonally resolved concentrations of persistent organic pollutants in the global atmosphere from the first year of the GAPS study. Environmental Science & Technology, 43, 796–803. https://doi.org/10.1021/es802106a.CrossRefGoogle Scholar
- Pozo, K., Oyola, G., Estellano, V. H., Harner, T., Rudolph, A., Prybilova, P., et al. (2017). Persistent organic pollutants (POPs) in the atmosphere of three Chilean cities using passive air samplers. The Science of the Total Environment, 586, 107–114. https://doi.org/10.1016/j.scitotenv.2016.11.054.CrossRefGoogle Scholar
- Sullivan, G.O. & Megson, D. (2014). Brief overview: discovery, regulation, properties, and fate of POPs. In G. O’Sullivan & C. Sandau (Eds.), Environmental forensics for persistent organic pollutants (pp. 1–20). Elsevier B.V.Google Scholar
- Tominaga, M. Y., Silva, C. R., Melo, J. P., Niwa, N. A., Plascak, D., Souza, C. A., et al. (2016). PCDD, PCDF, dl-PCB and organochlorine pesticides monitoring in São Paulo City using passive air sampler as part of the global monitoring plan. The Science of the Total Environment, 571, 323–331. https://doi.org/10.1016/j.scitotenv.2016.07.173.CrossRefGoogle Scholar
- UNEP (2010). Stockholm Convention on persistent organic pollutants (POPs). Text and Anexes as ammended in 2009. http://www.wipo.int/edocs/trtdocs/en/unep-pop/trt_unep_pop_2.pdf. Accessed 10 May 2018.
- USEPA (1999). United States Environmental Protection Agency. Compendium of methods for the determination of toxic organic compounds in ambient air. Compendium method TO-10A. Determination of pesticides and polychlorinated biphenyls in ambient air using low volume polyurethane foam (puf) sampling followed by gas chromatographic/multi-detector detection (GC/MD). Second Edition. https://www.epa.gov/sites/production/files/2016-02/documents/to-10ar.pdf. Accessed 10 May 2018.