Field comparison of instruments for exposure assessment of airborne ultrafine particles and particulate matter

Spinazzè, Andrea; Fanti, Giacomo; Borghi, Francesca; Buono, Luca Del; Campagnolo, Davide; Rovelli, Sabrina; Cattaneo, Andrea; Cavallo, Domenico Maria

doi:10.1016/j.atmosenv.2017.01.054

Cited by 36 publications

(33 citation statements)

References 70 publications

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“…Particularly, performance in areas with poor air quality, cross interferences and influences of temperature and relative humidity should be evaluated [ 26 , 47 ]. In this regard, the intercomparison and the performance evaluation (especially as regards the field performance) of miniaturized sensors is necessary, because if sensor performance results are to be validated (e.g., via comparison with reference methods), these miniaturized sensors could be used as support to fixed air quality monitoring networks to achieve a broader spatial coverage, to provide a more representative characterization of exposure [ 48 ]. However, despite this possible lack in their accuracy, and due to the abovementioned advantages, miniaturized monitors are becoming increasingly important in community and individual exposure assessment studies and can potentially be used in different application, such as outdoor/indoor air pollution monitoring and community/individual exposure [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

Miniaturized Monitors for Assessment of Exposure to Air Pollutants: A Review

Borghi

Spinazzè

Rovelli

et al. 2017

IJERPH

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Air quality has a huge impact on different aspects of life quality, and for this reason, air quality monitoring is required by national and international regulations. Technical and procedural limitations of traditional fixed-site stations for monitoring or sampling of air pollutants are also well-known. Recently, a different type of miniaturized monitors has been developed. These monitors, due to their characteristics (e.g., low cost, small size, high portability) are becoming increasingly important for individual exposure assessment, especially since this kind of instrument can provide measurements at high spatial and temporal resolution, which is a notable advantage when approaching assessment of exposure to environmental contaminants. The aim of this study is indeed to provide information regarding current knowledge regarding the use of miniaturized air pollutant sensors. A systematic review was performed to identify original articles: a literature search was carried out using an appropriate query for the search of papers across three different databases, and the papers were selected using inclusion/exclusion criteria. The reviewed articles showed that miniaturized sensors are particularly versatile and could be applied in studies with different experimental designs, helping to provide a significant enhancement to exposure assessment, even though studies regarding their performance are still sparse.

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Section: Resultsmentioning

confidence: 99%

Miniaturized Monitors for Assessment of Exposure to Air Pollutants: A Review

Borghi

Spinazzè

Rovelli

et al. 2017

IJERPH

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“…PM 2.5 samples were also collected using a GK2.05 sampler (BGI Inc., Waltham, MA, USA), operated with a sampling pump with a flow rate equal to 4 L/min; particles were collected using polytetrafluoroethylene filters. The mass concentration was determined by gravimetric analysis following a standard reference method [ 12 , 13 ] and previous studies [ 14 , 15 , 16 ]. Gravimetric data were used to correct the PM data acquired via the direct-reading instrument by calculating a daily correction factor applied a posteriori to the whole PM dataset [ 17 ].…”

Section: Methodsmentioning

confidence: 99%

Estimation of the Inhaled Dose of Airborne Pollutants during Commuting: Case Study and Application for the General Population

Borghi

Fanti

Cattaneo

et al. 2020

IJERPH

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During rush hours, commuters are exposed to high concentrations and peaks of traffic-related air pollutants. The aims of this study were therefore to extend the inhaled dose estimation outcomes from a previous work investigating the inhaled dose of a typical commuter in the city of Milan, Italy, and to extend these results to a wider population. The estimation of the dose of pollutants inhaled by commuters and deposited within the respiratory tract could be useful to help commuters in choosing the modes of transport with the lowest exposure and to increase their awareness regarding this topic. In addition, these results could provide useful information to policy makers, for the creation/improvement of a mobility that takes these results into account. The principal result outcomes from the first part of the project (case study on a typical commuter in the city of Milan) show that during the winter period, the maximum deposited mass values were estimated in the “Other” environments and in “Underground”. During the summer period, the maximum values were estimated in the “Other” and “Walking (high-traffic conditions)” environments. For both summer and winter, the lowest values were estimated in the “Car” and “Walking (low-traffic conditions)” environments. Regarding the second part of the study (the extension of the results to the general population of commuters in the city of Milan), the main results show that the period of permanence in a given micro-environment (ME) has an important influence on the inhaled dose, as well as the pulmonary ventilation rate. In addition to these results, it is of primary importance to report how the inhaled dose of pollutants can be strongly influenced by the time spent in a particular environment, as well as the subject’s pulmonary ventilation rate and pollutant exposure levels. For these reasons, the evaluation of these parameters (pulmonary ventilation rate and permanence time, in addition to the exposure concentration levels) for estimating the inhaled dose is of particular relevance.

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“…Note that DustTrak 8530 mass concentrations are equivalent concentrations based on Arizona Road Dust tests, unless specific calibrations are undertaken to compare to the actual aerosol of interest. Therefore, direct comparison to other methods used to measure real outdoor or indoor aerosol made near and in homes may not be exact due to different optical properties [20,34,35]. The value of the DT measurements in our study was to have relative real-time concentrations that could be compared with the activity diaries.…”

Section: Instrumentation and Metadata Collectionmentioning

confidence: 99%

Seasonal Variability of Airborne Particulate Matter and Bacterial Concentrations in Colorado Homes

et al. 2018

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Aerosol measurements were collected at fifteen homes over the course of one year in Colorado (USA) to understand the temporal variability of indoor air particulate matter and bacterial concentrations and their relationship with home characteristics, inhabitant activities, and outdoor air particulate matter (PM). Indoor and outdoor PM 2.5 concentrations averaged (±st. dev.) 8.1 ± 8.1 µg/m 3 and 6.8 ± 4.5 µg/m 3 , respectively. Indoor PM 2.5 was statistically significantly higher during summer compared to spring and winter; outdoor PM 2.5 was significantly higher for summer compared to spring and fall. The PM 2.5 I/O ratio was 1.6 ± 2.4 averaged across all homes and seasons and was not statistically significantly different across the seasons. Average indoor PM 10 was 15.4 ± 18.3 µg/m 3 and was significantly higher during summer compared to all other seasons. Total suspended particulate bacterial biomass, as determined by qPCR, revealed very little seasonal differences across and within the homes. The qPCR I/O ratio was statistically different across seasons, with the highest I/O ratio in the spring and lowest in the summer. Using one-minute indoor PM 10 data and activity logs, it was observed that elevated particulate concentrations commonly occurred when inhabitants were cooking and during periods with elevated outdoor concentrations.

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Field comparison of instruments for exposure assessment of airborne ultrafine particles and particulate matter

Cited by 36 publications

References 70 publications

Miniaturized Monitors for Assessment of Exposure to Air Pollutants: A Review

Miniaturized Monitors for Assessment of Exposure to Air Pollutants: A Review

Estimation of the Inhaled Dose of Airborne Pollutants during Commuting: Case Study and Application for the General Population

Seasonal Variability of Airborne Particulate Matter and Bacterial Concentrations in Colorado Homes

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