PHÁT TRIỂN PHƯƠNG PHÁP LẤY MẪU KHÔNG KHÍ THỤ ĐỘNG QUAN TRẮC PCDD/PCDF TRONG ĐIỀU KIỆN KHÍ HẬU NHIỆT ĐỚI
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Tóm tắt
DEVELOPING THE PASSIVE AIR SAMPLING METHOD FOR MONITORING PCDDs/PCDFs IN TROPICAL CLIMATE CONDITIONS
Passive air sampling (PAS) method has been successfully developed using isotope standards 13C-labeled PCDDs/PCDFs as surrogates on the PUF disks from the beginning of sampling to monitor PCDDs/PCDFs from different sources of pollution, with very different levels of PCDDs/PCDFs in ambient air in the actual conditions of monsoon tropical climates with hot, wet weather and high temperatures in Vietnam.
The 13C-labeled PCDD/PCDF surrogates acted as quantitative standards in the seasonal PAS process (spring, summer, autumn, winter) in the North and/or every 3 months in the dry and rainy seasons in the Central. At least 96.9% of all surrogates had the retention efficiencies of 17% to 185% on PUF disks, which were equivalent to that required by US EPA 1613B method for the recovery efficiencies only at sample preparation.
This development method was shown to be reliable with 91.6% of the total PCDD/PCDF congeners which their relative percent differences (RPDs) between PCDD/PCDF concentrations on the PUF disks of field duplicates were not exceed 40% and an average RPD of only 7.4% to 30.5% for both PAS process and laboratory analysis.
Từ khóa
PCDDs/PCDFs, passive air sampling, surrogates, retention efficiency, relative percent difference
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Tài liệu tham khảo
2. Holoubek I., J. Klánová, P. Čupr, P. Kukučka, J. Borůvková, J. Kohoutek, R. Prokeš and R. Kareš, POPs in ambient air from MONET network-global and regional trends, WIT Trans. Ecol. Environ., 2011, 147:173-184.
3. Jaward F.M., N.J. Farrar, T. Harner, A.J. Sweetman and K.C. Jones, Passive air sampling of PCBs, PBDEs, and organochlorine pesticides across Europe, Environ. Sci. Technol., 2004, 38:34-41.
4. Schuster J.K., T. Harner, G. Fillmann, L. Ahrens, J.C. Altamirano, B. Aristizábal, W. Bastos, L.E. Castillo, J. Cortés, and O. Fentanes, Assessing polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in air across Latin American countries using polyurethane foam disk passive air samplers, Environ. Sci. Technol., 2015, 49:3680-3686.
5. Tominaga M., C. Silva, J. Melo, N. Niwa, D. Plascak, C. Souza, and M. Sato, PCDD, PCDF, dl-PCB and organochlorine pesticides monitoring in São Paulo City using passive air sampler as part of the Global Monitoring Plan, Sci. Total Environ., 2016, 571:323-331.
6. Bogdal C., M. Scheringer, E. Abad, M. Abalos, B. Van Bavel, J. Hagberg, and H. Fiedler, Worldwide distribution of persistent organic pollutants in air, including results of air monitoring by passive air sampling in five continents, TrAC - Trends Anal. Chem., 2013, 46:150-161.
7. Pozo K., Harner T., Lee S.C., Wania F., Muir D.C.G., Jones K.C., Seasonally resolved concentrations of persistent organic pollutants in the Global atmosphere from the first year of the GAPS study, Environ. Sci. Technol., 2009, 43(3): 796-803.
8. Estellano V.H., Pozo K., Harner T., Franken M., Zaballa M., Altitudinal and seasonal variations of persistent organic pollutants in the Bolivian Andes mountains, Environ. Sci. Technol., 2008, 42(7):2528-2534.
9. Gouin T., Harner T., Blanchard P., Mackay D., Passive and active air samplers as complementary methods for investigating persistent organic pollutants in the Great Lakes basin, Environ. Sci. Technol., 2005, 39:9115-9122.
10. Jaward F.M., Farrar N.J., Harner T., Sweetman A.J., Jones K.C., Passive air sampling of PCBs, PBDEs and organochlorine pesticides across Europe, Environ. Sci. Technol., 2004, 38(1):34-41.
11. MONET network. http://www.monet-ceec.eu
12. Harner, T., Su, K., Genualdi, S., Karpowicz, J., Ahrens, L., Mihele, C., Schuster, J., Charland, J.-P., Narayan, J., Calibration and application of PUF disk passive air samplers for tracking polycyclic aromatic compounds (PACs), Atmos. Environ., 2013, 75:123-128.
13. Cortes, J., Gonzalez, C.M., Morales, L., Abalos, M., Abad, E., Aristizabal, B.H., PCDD/PCDF and dl-PCB in the ambient air of a tropical Andean city: passive and active sampling measurements near industrial and vehicular pollution sources, Sci. Total. Environ., 2014, 491-492:67-74.
14. Gao, L., Zhang, Q., Liu, L., Li, C., Wang, Y., Spatial and seasonal distributions of polychlorinated dibenzo-p-dioxins and dibenzofurans and polychlorinated biphenyls around a municipal solid waste incinerator, determined using polyurethane foam passive air samplers, Chemosphere, 2014, 114:317-326.
15. Vilavert, L., Nadal, M., Schuhmacher, M., Domingo, J.L., Seasonal surveillance of airborne PCDD/Fs, PCBs and PCNs using passive samplers to assess human health risks, Sci. Total Environ., 2014, 466:733-740.
16. Harner T., PUF disk sampler (TE-200 PAS) standard operating procedure, Environment Canada, Toronto, Ontario M3H 5T4 Canada, 2006.
17. U.S. Environmental protection agency, Method 1613B: Tetra- through octa-chlorinated dioxins and furans by isotope dilution HRGC/HRMS, Washington, D.C., 1994.
18. U.S. Environmental protection agency, Hazardous waste test methods SW-846, Chapter one: Project quality assurance and quality control, Revision 2, United States Environmental Protection Agency, Washington, D.C., 2014.
19. Truong N.X, Sau T.K., Net N.X, Hung L.B, Hue N.D, Huy D.Q, Hang N.M, Study and differentiate dioxin from herbicide used in Vietnam war and that created from other wastes, Organohalogen Compounds, 2010, 72:896-901.