Comparative Assessment of the Quality of Aerosol Filters for the Analysis of Ambient Air Pollution
https://doi.org/10.35627/2219-5238/2021-29-8-33-38
Abstract
Introduction. Atmospheric aerosols contain many carcinogenic and toxic substances, a significant part of which is represented by heavy metals. Traditionally, metal analysis is preceded by air sampling on AFA-HA-20 filters; yet, the lack of regulations on permitted background levels of trace elements in the filter material may limit reliability of measurements. Selection of filters with similar technological parameters can be a way to improve analytical accuracy.
Objective: To determine contamination of different types of filters and to establish its effect on the results of spectral analysis of airborne metal concentrations in a large industrial city.
Materials and methods: We analyzed unexposed AFA-HA-20 filters and Merck Millipore MF filters (n = 30 each) for the content of 13 heavy metals identified as priority pollutants within the Federal Clean Air Project. To assess the effect of filter contamination on the analytical error, air sampling was performed by exposing Merck Millipore MF filters at mobile monitoring stations in the city of Lipetsk. The filters were then analyzed by inductively coupled plasma mass spectrometry with prior microwave mineralization.
Results: Our findings confirm the repeatedly obtained data on metal contents in null AFA-HA-20 filters and indicate significantly lower levels of contamination of unexposed Millipore MF filters made of mixed cellulose ethers.
Conclusions: The risk of obtaining false positive and false negative results depends on the level and variability of the content of a particular trace metal in the filter. The AFA-HA-20 type of filters traditionally used for ambient air sampling may itself confound measurement result.
About the Authors
M. V. EgorovaRussian Federation
Marina V. Egorova, Cand. Sci. (Biol.), Senior Researcher, Department of Analytical Control Methods
2 Semashko Street, Mytishchi, Moscow Region, 141014, Russian Federation
Bldg 1, 2/1 Barrikadnaya Street, Moscow, 125993, Russian Federation
V. V. Korotkov
Russian Federation
Vladimir V. Korotkov, Deputy Head of the Department of Sanitary and Epidemiological Expertise of Anti-Epidemic Activity and Monitoring
60a Gagarin Street, Lipetsk, 398002, Russian Federation
A. S. Rodionov
Russian Federation
Alexander S. Rodionov, Junior Researcher, Department of Analytical Control Methods
2 Semashko Street, Mytishchi, Moscow Region, 141014, Russian Federation
E. V. Grigorieva
Russian Federation
Elena V. Grigorieva, Head of the Laboratory Unit for Food Testing and Physicochemical Analysis
60a Gagarin Street, Lipetsk, 398002, Russian Federation
V. V. Gnezdilova
Russian Federation
Victoria V. Gnezdilova, Head of the Department for Analysis of Environmental Factors
60a Gagarin Street, Lipetsk, 398002, Russian Federation
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Review
For citations:
Egorova M.V., Korotkov V.V., Rodionov A.S., Grigorieva E.V., Gnezdilova V.V. Comparative Assessment of the Quality of Aerosol Filters for the Analysis of Ambient Air Pollution. Public Health and Life Environment – PH&LE. 2021;29(8):33-38. (In Russ.) https://doi.org/10.35627/2219-5238/2021-29-8-33-38