ArticleACS omega2026
Radiometrically Equivalent Comparison of 254 nm Low-Pressure Mercury Lamps and InGaN 280 nm UV-C LEDs for Surface Disinfection.
Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
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Abstract
Ultraviolet germicidal irradiation (UVGI) is traditionally based on low-pressure mercury lamps emitting at 254 nm, whereas UV-C light-emitting diodes (LEDs) have emerged as promising mercury-free alternatives. However, direct comparisons between these technologies are frequently confounded by differences in irradiance, exposure geometry, and accumulated UV-C dose, making it difficult to isolate wavelength-dependent effects from dosimetric bias. In this study, two closed irradiation chambers equipped with a low-pressure Hg lamp (254 nm) and an InGaN UV-C LED array (280 nm) were comprehensively evaluated in terms of emission spectrum, temporal irradiance stability, and spatial dose distribution. Radiometric measurements established matched irradiation conditions corresponding to source-to-sample distances of 41.0 cm for the Hg lamp and 5.5 cm for the LED system. For microbiological testing, both sources were operated for 270 s to reach stable irradiance, while the plates remained shielded from UV-C until the timed exposure began. Under matched accumulated UV-C doses,
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