EVALUATION OF ALPHASENSE OPC-N2 SENSOR FOR PM10 MEASUREMENT IN THE NORTH JAKARTA
Keywords:Cost-effective method, Low-cost sensor, Micro sensor, Particulate matter, Indonesia
AbstractSpatial and temporal data of particulate matter (PM) are limited in Indonesia; hence cost-effective and robust instruments to monitor PM concentration could complete data coverage. The low-cost sensor (LCS) Alphasense OPC-N2 provides real-time PM concentration data and is relatively simple to install and deploy. This paper presents data from an OPC-N2 sensor collocated with a PM10 Beta Attenuation Monitor (BAM). The study was carried out at an air quality monitoring site in North Jakarta belonging to the provincial government. The location is considered suitable for evaluating the performance of OPC-N2 micro sensor as it is a representative of a typical Indonesian urbanized area with a range of pollutant sources, including sea-sourced aerosols. At the same site, a filter-based Gent Sampler (GS) measuring both PM10 and PM2.5 was also deployed. The study showed that 30-minutely and daily average concentrations data for PM10 measured by OPC-N2 were lower than that of BAM measurements in both averaged durations by approximately 50%. The comparison between OPC-N2 and GS for PM10 showed that OPC-N2 measurement was underestimated but it was overestimated for PM2.5. Nonetheless, correlations of OPC-N2 and BAM were 0.530 and 0.607 for PM10 and PM2.5, respectively. These results were comparable to other low-cost sensor evaluation studies in different countries, suggesting that the sensor can represent temporal variation of the reference measurement.
M. Elder, 2016. “Application of SDGs to Air Pollution,” Paper presented at The Atmospheric Pollution, Climate Change Nexus in Asia: Implications for a New Development Agenda, Hayama, Japan,
R. D. Ratnani, 2008 “Teknik Pengendalian Pencemaran Udara Yang Diakibatkan Oleh Partikel,” Jurnal Ilmiah Momentum, 4(2): 27–32, [Online]. Retrieved from: https://publikasiilmiah.unwahas.ac.id/index.php/MOMENTUM/artice/view/612/7 . [Accessed August 2021]
F. J. Kelly, and J. C. Fussell, 2012. “Size, source and chemical composition as determinants of toxicity attributable to ambient particulate matter,” Atmospheric Environment, 60: 504–526, DOI: 10.1016/j.atmosenv.2012.06.039
D. Priyanka, N. Victor, M. K. Jacqualine, E. S. Bruce,O. H. Wah, S. John, J. Roderic, and R. Carlo. 2017 “A Nairobi experiment in using low cost air quality monitors,” Clean Air Journal, 27(2): 12-42 DOI : 10.17159/2410-972X/2017/v27n2a6
M. Santoso, D. D. Lestiani, and A. Markwitz, 2013. “Characterization of airborne particulate matter collected at Jakarta roadside of an arterial road,” Journal of Radioanalytical and Nuclear Chemistry, 297(2): 165–169, DOI : 10.1007/s10967-012-2350-5
S. Feinberg, 2016. “CAIRSENSE Study : Real-world evaluation of low cost sensors in Denver, Colorado,” Paper presented at 2016 National Ambient Air Monitoring Conference, St. Louis, US.
S. Sousan, K. Koehler, L. Hallett, and T. M. Peters, 2016. “Evaluation of the Alphasense optical particle counter (OPC-N2) and the Grimm portable aerosol spectrometer (PAS-1.108),” Aerosol Science and Technology, 50(12): 1352–1365, DOI : 10.1080/02786826.2016.1232859
L. R. Crilley, M. Shaw, R. Pound, L. J. Kramer, R. Price, S. Young, and F. D. Pope, 2018 “Evaluation of a low-cost optical particle counter (Alphasense OPC-N2) for ambient air monitoring,” Atmospheric Measurement Techniques, 11(2): 709–720, [Online]. Retrieved from: https://doi.org/10.5194/amt-11-709-2018 [Accessed June 2021]
Driejana, N.K. Sari, and M. Santoso, Characterization of dry-season particulate matter composition and its potential sources identification in Jakarta, manuscript submitted for publication.
L. Spinelle, M. Aleixandre, and M. Gerboles. 2013 JRC Technical Report:Protocol of evaluation and calibration of low-cost gas sensors for the monitoring of air pollution [Online]. Available: https://ec.europa.eu/jrc/en/publication/eur-scientific-and-technical-research-reports/protocol-evaluation-and-calibration-low-cost-gas-sensors-monitoring-air-pollution [Accesed: June 2019]:
S. Raja, S. R. Chandrasekaran, , Lin. L, X. Xia, P. K. Hopke, and K. T. Valsaraj, 2017 “Analysis of beta attenuation monitor filter rolls for particulate matter speciation,” Aerosol and Air Quality Research, 17(1): 14–23,. DOI : 10.4209/aaqr.2016.03.0122
P. K. Hopke, Y. Xie, T. Raunemaa, S. Biegalski, S. Landsberger, W. Maenhaut, and D. Cohen, 1997 “Characterization of the gent stacked filter unit pm10 sampler,” Aerosol Science and Technology, 27(6): 726–735,. DOI : 10.1080/02786829708965507
W.C. Hinds, 1999. Aerosol Technology, Properties, Behaviour, and Measurement of Airborne Particles, John Wiley & Sons Inc., New York,
Summary Tables and Reports, PM Sensor Evaluations, [Online], Retrieved from http://www.aqmd.gov/aq-spec/evaluations/summary-pm[Accessed: September,2019]
Technical Specification OPC-N2 Particle Monitor, [Online], Retrieved from http://www.alphasense.com [Accessed September 2019]
D. O. Topping, G. B. McFiggans, and H. Coe, 2005 “A curved multicompo-nent aerosol hygroscopicity model framework: Part 1 – Inorganic compounds,” Atmospheric Chemistry Physic, 5: 1205–1222,
Jay G. Slowik, K. Stainken, Paul. Davidovits, L. R. William, J. T. Jayne, C. E. Kolb, Douglas R. Worsnop, Y. Rudich, Peter F. DeCarlo, and J. L. Jimenez, 2012. “Particle Morphology and Density Characterization by Combined Mobility and Aerodynamic Diameter Measurements. Part 2: Application to Combustion- Generated Soot Aerosols as a Function of Fuel Equivalence Ratio,” Aerosol Science and Technology, 38(12): 1206-1222, DOI : 10.1080/027868290903916
DKI Jakarta Government, 2014. DKI Jakarta Regional Regulation No. 1/2014 : Detailed Spasial Plans and Zoning Regulation in DKI Jakarta Province, Jakarta, Indonesia,
BPS Kota Administrasi Jakarta Utara, 2019Kota Jakarta Utara Dalam Angka, 2019 [Online]. Available: https://jakutkota.bps.go.id/publication.html. [Accessed August 2020]
P. F. DeCarlo, J. G. Slowik, D. R. Worsnop, P. Davidovits, and J. L. Jimenez, 2004 “Particle morphology and density characterization by combined mobility and aerodynamic diameter measurements. Part 1: Theory,” Aerosol Sci. Technol., 38(12): 1185–1205, DOI: 10.1080/027868290903907.