Comparison of size distribution and electrical particle sensor measurement methods for particle lung deposited surface area (LDSA<sup>al</sup>) in ambient measurements with varying conditions
<p>It has become evident that additional metrics along the particle mass concentration, together with dense air quality monitoring networks within cities, are needed to understand the most efficient ways to tackle the health burden of particulate pollution. Particle lung-deposited surface area...
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Copernicus Publications
2024-09-01
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| Series: | Aerosol Research |
| Online Access: | https://ar.copernicus.org/articles/2/271/2024/ar-2-271-2024.pdf |
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| author | T. Lepistö H. Lintusaari L. Salo V. Silvonen L. M. F. Barreira J. Hoivala L. Markkula J. V. Niemi J. Ondracek K. Teinilä H. E. Manninen S. Saarikoski H. Timonen M. Dal Maso T. Rönkkö |
| author_facet | T. Lepistö H. Lintusaari L. Salo V. Silvonen L. M. F. Barreira J. Hoivala L. Markkula J. V. Niemi J. Ondracek K. Teinilä H. E. Manninen S. Saarikoski H. Timonen M. Dal Maso T. Rönkkö |
| author_sort | T. Lepistö |
| collection | DOAJ |
| description | <p>It has become evident that additional metrics along the particle mass concentration, together with dense air quality monitoring networks within cities, are needed to understand the most efficient ways to tackle the health burden of particulate pollution. Particle lung-deposited surface area (LDSA<span class="inline-formula"><sup>al</sup></span>) is a metric to estimate particle exposure in the lung alveoli, and it has gained interest as a parameter for air quality monitoring as it is relatively easy and cost-efficient to measure with electrical particle sensors. Also, various studies have indicated its potential as a health-relevant metric. In addition to the electrical particle sensors, the LDSA<span class="inline-formula"><sup>al</sup></span> can be measured with various size distribution methods. However, different LDSA<span class="inline-formula"><sup>al</sup></span> measurement methods have fundamental differences in their operation principles, e.g., related to the measurement size ranges, size classification or conversion from the originally measured quantity into the LDSA<span class="inline-formula"><sup>al</sup></span>. It is not well understood how these differences affect the accuracy of the measurement in ambient conditions, where especially the particle effective density and hygroscopicity can considerably change the particle lung deposition efficiencies. In this study, the electrical particle sensor measurement (Partector) and two size distribution approaches (ELPI<span class="inline-formula">+</span> and DMPS/SMPS) were compared in road traffic environments with different environmental conditions in Helsinki and Prague. The results were compared by utilising the general assumptions of the LDSA<span class="inline-formula"><sup>al</sup></span> measurement (spherical hydrophobic particles with the standard density) and by evaluating the effects of the particle effective density and hygroscopicity. Additionally, the Partector and ELPI<span class="inline-formula">+</span> approaches were compared in various urban environments near road traffic, airports, river traffic and residential wood combustion. The results show that the comparison of different LDSA<span class="inline-formula"><sup>al</sup></span> measurement methods can be complicated in ambient measurements. The challenges were especially related to the accumulation mode particles roughly larger than 200–400 nm for which the dominant deposition mechanism in the lung changes from diffusion to impaction and the particle effective density and hygroscopicity tend to increase. On the other hand, the results suggest that the differences between the methods are reasonably low when considering only ultrafine and soot particles, which have an effective density closer to the standard (1.0 g cm<span class="inline-formula"><sup>−3</sup></span>) and are more hydrophobic, highlighting the suitability of the LDSA<span class="inline-formula"><sup>al</sup></span> as a monitored metric when estimating the spatial differences in the particulate pollution within cities.</p> |
| format | Article |
| id | doaj-art-a13137e421334f518082b65a7152ea2e |
| institution | OA Journals |
| issn | 2940-3391 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Aerosol Research |
| spelling | doaj-art-a13137e421334f518082b65a7152ea2e2025-08-20T01:55:18ZengCopernicus PublicationsAerosol Research2940-33912024-09-01227128910.5194/ar-2-271-2024Comparison of size distribution and electrical particle sensor measurement methods for particle lung deposited surface area (LDSA<sup>al</sup>) in ambient measurements with varying conditionsT. Lepistö0H. Lintusaari1L. Salo2V. Silvonen3L. M. F. Barreira4J. Hoivala5L. Markkula6J. V. Niemi7J. Ondracek8K. Teinilä9H. E. Manninen10S. Saarikoski11H. Timonen12M. Dal Maso13T. Rönkkö14Aerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, 33014 Tampere, FinlandAerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, 33014 Tampere, FinlandAerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, 33014 Tampere, FinlandAerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, 33014 Tampere, FinlandAtmospheric Composition Research, Finnish Meteorological Institute, 00101 Helsinki, FinlandAerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, 33014 Tampere, FinlandAerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, 33014 Tampere, FinlandHelsinki Region Environmental Services Authority HSY, 00066 Helsinki, FinlandResearch Group of Aerosol Chemistry and Physics, ICPF CAS, 165 00 Prague, CzechiaAtmospheric Composition Research, Finnish Meteorological Institute, 00101 Helsinki, FinlandHelsinki Region Environmental Services Authority HSY, 00066 Helsinki, FinlandAtmospheric Composition Research, Finnish Meteorological Institute, 00101 Helsinki, FinlandAtmospheric Composition Research, Finnish Meteorological Institute, 00101 Helsinki, FinlandAerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, 33014 Tampere, FinlandAerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, 33014 Tampere, Finland<p>It has become evident that additional metrics along the particle mass concentration, together with dense air quality monitoring networks within cities, are needed to understand the most efficient ways to tackle the health burden of particulate pollution. Particle lung-deposited surface area (LDSA<span class="inline-formula"><sup>al</sup></span>) is a metric to estimate particle exposure in the lung alveoli, and it has gained interest as a parameter for air quality monitoring as it is relatively easy and cost-efficient to measure with electrical particle sensors. Also, various studies have indicated its potential as a health-relevant metric. In addition to the electrical particle sensors, the LDSA<span class="inline-formula"><sup>al</sup></span> can be measured with various size distribution methods. However, different LDSA<span class="inline-formula"><sup>al</sup></span> measurement methods have fundamental differences in their operation principles, e.g., related to the measurement size ranges, size classification or conversion from the originally measured quantity into the LDSA<span class="inline-formula"><sup>al</sup></span>. It is not well understood how these differences affect the accuracy of the measurement in ambient conditions, where especially the particle effective density and hygroscopicity can considerably change the particle lung deposition efficiencies. In this study, the electrical particle sensor measurement (Partector) and two size distribution approaches (ELPI<span class="inline-formula">+</span> and DMPS/SMPS) were compared in road traffic environments with different environmental conditions in Helsinki and Prague. The results were compared by utilising the general assumptions of the LDSA<span class="inline-formula"><sup>al</sup></span> measurement (spherical hydrophobic particles with the standard density) and by evaluating the effects of the particle effective density and hygroscopicity. Additionally, the Partector and ELPI<span class="inline-formula">+</span> approaches were compared in various urban environments near road traffic, airports, river traffic and residential wood combustion. The results show that the comparison of different LDSA<span class="inline-formula"><sup>al</sup></span> measurement methods can be complicated in ambient measurements. The challenges were especially related to the accumulation mode particles roughly larger than 200–400 nm for which the dominant deposition mechanism in the lung changes from diffusion to impaction and the particle effective density and hygroscopicity tend to increase. On the other hand, the results suggest that the differences between the methods are reasonably low when considering only ultrafine and soot particles, which have an effective density closer to the standard (1.0 g cm<span class="inline-formula"><sup>−3</sup></span>) and are more hydrophobic, highlighting the suitability of the LDSA<span class="inline-formula"><sup>al</sup></span> as a monitored metric when estimating the spatial differences in the particulate pollution within cities.</p>https://ar.copernicus.org/articles/2/271/2024/ar-2-271-2024.pdf |
| spellingShingle | T. Lepistö H. Lintusaari L. Salo V. Silvonen L. M. F. Barreira J. Hoivala L. Markkula J. V. Niemi J. Ondracek K. Teinilä H. E. Manninen S. Saarikoski H. Timonen M. Dal Maso T. Rönkkö Comparison of size distribution and electrical particle sensor measurement methods for particle lung deposited surface area (LDSA<sup>al</sup>) in ambient measurements with varying conditions Aerosol Research |
| title | Comparison of size distribution and electrical particle sensor measurement methods for particle lung deposited surface area (LDSA<sup>al</sup>) in ambient measurements with varying conditions |
| title_full | Comparison of size distribution and electrical particle sensor measurement methods for particle lung deposited surface area (LDSA<sup>al</sup>) in ambient measurements with varying conditions |
| title_fullStr | Comparison of size distribution and electrical particle sensor measurement methods for particle lung deposited surface area (LDSA<sup>al</sup>) in ambient measurements with varying conditions |
| title_full_unstemmed | Comparison of size distribution and electrical particle sensor measurement methods for particle lung deposited surface area (LDSA<sup>al</sup>) in ambient measurements with varying conditions |
| title_short | Comparison of size distribution and electrical particle sensor measurement methods for particle lung deposited surface area (LDSA<sup>al</sup>) in ambient measurements with varying conditions |
| title_sort | comparison of size distribution and electrical particle sensor measurement methods for particle lung deposited surface area ldsa sup al sup in ambient measurements with varying conditions |
| url | https://ar.copernicus.org/articles/2/271/2024/ar-2-271-2024.pdf |
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