o:5859 Performance assessment of NOVA SDS011 low‑cost PM sensor in various microenvironments en Abstract Over the last 10 years, as a possible alternative to the conventional approach to air quality monitoring, real-time monitoring systems that use low-cost sensors and sensor platforms have been frequently applied. Generally, the long-term characteristics of low-cost PM sensors and monitoring have not been thoroughly documented except for a few widely used sensors and monitors. This article addresses the laboratory and field validation of three low-cost PM monitors of the same type that use the NOVA SDS011 PM sensor module over a 1-year period. In outdoor environments, we co-located low-cost PM monitors with GRIMM EDM180 monitors at the National Air Quality Monitoring stations. In indoor environments, we co-located them with a Turnkey Osiris PM monitor. Several performance aspects of the PM monitors were examined: operational data coverage, linearity of response, accuracy, precision, and inter-sensor variability. The obtained results show that inter-monitor R values were typically higher than 0.95 regardless of the environment. The tested monitors demonstrate high linearity in comparison with PM10 and PM2.5 concentrations measured in outdoor air with reference-equivalent instrumentation with R2 values ranging from 0.52 up to 0.83. In addition, very good agreement ( R2 values ranging from 0.93 up to 0.97) with the gravimetric PM10 and PM2.5 method is obtained in the indoor environment (30 < RH < 70%). High RH (over 70%) negatively affected the PM monitors’ response, especially in the case of PM10 concentrations (high overestimation). Keywords Air pollution, Monitoring, Particulate matter, Low-cost PM monitor, NOVA SDS011 PM sensor. 1552099 10.1007/s10661-022-10290-7 91552100 136676105 1552101 1573-2959 2024-10-29T01:10:16.441Z 44 no 46 Aca Božilov Fakultet zaštite na radu, Univerzitet u Nišu 15721831 0000-0001-7032-4789 2022 46 Viša Tasić Institut za rudarstvo i metalurgiju Bor 54602505 0000-0001-6710-6529 2022 46 Nenad Živković Fakultet zaštite na radu, Univerzitet u Nišu 12104295 2022 46 Ivan Lazović Institut za nuklearne nauke Vinča 61859337 0000-0002-3877-5157 2022 46 Milan Blagojević Fakultet zaštite na radu, Univerzitet u Nišu 1280359 0000-0002-0278-7914 2022 46 Nikola Mišić Fakultet zaštite na radu, Univerzitet u Nišu 15720551 0000-0003-2314-4851 2022 46 Dušan Topalović Institut za nuklearne nauke Vinča 63960585 0000-0001-5976-963X 2022 application/pdf 3480528 https://unilib.phaidrabg.rs/o:5859 no yes 16 70 502 92000001 71A03 Environmental monitoring and assessment 194 595 2022