A Review of Literature on the Usage of Low-Cost Sensors to Measure Particulate Matter

Earth, Год журнала: 2023, Номер 4(1), С. 168 - 186

Опубликована: Март 14, 2023

With advances in technological sciences, individuals can utilize low-cost air monitoring sensors to record quality at homes, schools, and businesses. Air data collected from LCSs are publicly accessible, informing the community of around them. It is important measure local regional particulate matter (PM) concentrations keep public involved, especially those with specific health concerns, such as asthma, wheezing, seasonal allergies. The number studies involving use evaluate PM levels increasing more manufacturers producing ‘easy use’ targeting public. goal this review understand incorporate findings using analyze various sizes, i.e., PM1, PM2.5, PM4, PM10. This integrates analyses 51 different 14 countries, including U.S. indicate spatial heterogeneity across a region. Some sensor mentioned these include Plantower, AQMesh, Alpha-sense, PurpleAir, E-MOTEs, Shinyei. emphasizes importance field its potential inform about their exposure burden, aid state federal decision makers formulating policies for mitigating effects pollution any urban or rural setting.

Язык: Английский

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Enhancing air pollution mapping with autonomous UAV networks for extended coverage and consistency

Atmospheric Research, Год журнала: 2024, Номер 306, С. 107480 - 107480

Опубликована: Май 16, 2024

Язык: Английский

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Evaluation of low-cost particulate matter sensors OPC N2 and PM Nova for aerosol monitoring

Atmospheric Pollution Research, Год журнала: 2022, Номер 13(3), С. 101335 - 101335

Опубликована: Янв. 20, 2022

Язык: Английский

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Vertical profiles of O3, NO2 and PM in a major fine chemical industry park in the Yangtze River Delta of China detected by a sensor package on an unmanned aerial vehicle

The Science of The Total Environment, Год журнала: 2022, Номер 845, С. 157113 - 157113

Опубликована: Июль 1, 2022

Язык: Английский

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Fundamentals of low-cost aerosol sensor design and operation

Aerosol Science and Technology, Год журнала: 2023, Номер 58(1), С. 1 - 15

Опубликована: Ноя. 20, 2023

Most evaluations of low-cost aerosol sensors have focused on their measurement bias compared to regulatory monitors. Few applied fundamental principles science increase our understanding how such work and could be improved. We examined the Plantower PMS5003 sensor's internal geometry, laser properties, photodiode responses, microprocessor output, flow rates, response mono- poly-disperse aerosols. developed a physics-based model particle light scattering within sensor, which we used predict counting sizing efficiency for 0.30 10 µm particles. found that counts single events, acting like an imperfect optical counter, rather than nephelometer. As is not into core beam, >99% particles through miss laser, those intercept usually focal point are subsequently undersized, resulting in erroneous size distribution data. Our predictions varying diameters, compositions, relative humidity were consistent with laboratory Computational fluid dynamics simulations PurpleAir monitor housing showed wind-speeds less 3 m s−1, fine coarse representatively aspired inlet. measurements models explain why overstates PM2.5 some locations but others; PM10 unresponsive windblown dust; it reports similar as does smoke ambient background aerosol.

Язык: Английский

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Long-term evaluation of commercial air quality sensors: an overview from the QUANT (Quantification of Utility of Atmospheric Network Technologies) study

Atmospheric measurement techniques, Год журнала: 2024, Номер 17(12), С. 3809 - 3827

Опубликована: Июнь 26, 2024

Abstract. In times of growing concern about the impacts air pollution across globe, lower-cost sensor technology is giving first steps in helping to enhance our understanding and ability manage quality issues, particularly regions without established monitoring networks. While benefits greater spatial coverage real-time measurements that these systems offer are evident, challenges still need be addressed regarding reliability data quality. Given limitations imposed by intellectual property, commercial implementations often “black boxes”, which represents an extra challenge as it limits end users' production process. this paper we present overview QUANT (Quantification Utility Atmospheric Network Technologies) study, a comprehensive 3-year assessment range urban environments United Kingdom, evaluating 43 devices, including 119 gas sensors 118 particulate matter (PM) sensors, from multiple companies. stands out one most studies carried date, encompassing wide variety companies single evaluation two generations technologies. Integrated into extensive dataset open public, was designed provide long-term precision, accuracy stability commercially available systems. To attain nuanced performance, have complemented commonly used single-value metrics (e.g. coefficient determination, R2; root mean square error, RMSE; absolute MAE) with visual tools. These include regression plots, relative expanded uncertainty (REU) plots target enhancing analysis beyond traditional metrics. This discusses methodology key findings showcasing significance study. more analyses reserved for future detailed publications, results shown here highlight significant variation between systems, incidence corrections made manufacturers, effects relocation different behaviour Additionally, importance accounting uncertainties associated reference instruments evaluations emphasised. Practical considerations application real-world scenarios also discussed, potential solutions end-user presented. Offering information systems' capabilities, study will serve valuable resource those seeking implement complementary tools tackle pollution.

Язык: Английский

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A review of Space-Air-Ground integrated remote sensing techniques for atmospheric monitoring

Journal of Environmental Sciences, Год журнала: 2021, Номер 123, С. 3 - 14

Опубликована: Дек. 23, 2021

Язык: Английский

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Three-dimensional spatiotemporal variability of CO2 in suburban and urban areas of Shaoxing City in the Yangtze River Delta, China

The Science of The Total Environment, Год журнала: 2023, Номер 881, С. 163501 - 163501

Опубликована: Апрель 17, 2023

Язык: Английский

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Experimental study of smog microphysical and optical vertical structure in the Silesian Beskids, Poland

Atmospheric Pollution Research, Год журнала: 2021, Номер 12(9), С. 101171 - 101171

Опубликована: Авг. 16, 2021

This study presents the vertical profiles of aerosol optical and microphysical properties obtained from cable car ground-based measurements in Silesian Beskids, Poland. The data were collected during a measurement campaign between 25 February March 11, 2018. An AE-51 micro-aethalometer PMS7003 OPC-N2 particle counters mounted on used to measure equivalent black carbon (eBC) concentration size distribution. In situ aerosols using an AE-31 aethalometer photoacoustic devices. A prototype lidar was determine planetary boundary layer (PBL) height layers. middle phase (1–6 2018), significant night-time temperature inversions observed. During inversion period, parameters describing amount air increased significantly. eBC exceeded level 15 μg/m3 several times, with average 5.39 ± 4.42 μg/m3. Conversely, results first third phases experiment at background, being 1.45 0.88 0.90 0.95 μg/m3, respectively. Significant differences also observed PM10 mass concentration. study, showed reduction pollutants height, while phases, there slight variations height.

Язык: Английский

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Study of spatiotemporal variation and annual emission of CH4 in Shaoxing Yangtze River Delta, China, Using a portable CH4 detector on the UAV

Journal of Environmental Sciences, Год журнала: 2024, Номер 151, С. 140 - 149

Опубликована: Апрель 2, 2024

Язык: Английский

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