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Spectral transmission of solar radiation by plastic and glass materials
- Source :
- RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, instname
- Publication Year :
- 2020
- Publisher :
- Elsevier, 2020.
-
Abstract
- [EN] It is well known that excessive exposure to solar ultraviolet (UV) radiation can have serious adverse effects. Many everyday materials influence the UV radiation received by humans, for example, those used in construction and on the exterior of buildings such as plastics and glass can reduce the UV exposure of persons exposed to solar radiation. In this paper we analyse the spectral transmission of solar radiation of widely used materials using the transmittance parameter. The measurements were performed on clear days, at 8 h and 12 solar hours, in July 2018 (five days) and in January 2019 (three days). The spectral transmittances of these materials and the integrated transmittances in the UVB from 300 nm, UVA, visible (VIS) and near infrared ranges (NIR) were calculated. In summer in the UVB range from 300 nm methacrylate and smoked glass have the highest transmittance values (56%) and polycarbonate present the lowest (30%). In the VIS and NIR ranges methacrylate (95%) and smoked glass (80%) have the highest transmittances and polycarbonate the lowest (45%). In general the 8 h transmittances are higher than those at 12 h and are also higher in winter than summer. For two biological functions (erythemal and DNA-damage) and for the UVB range from 300 nm, the transmittance for most materials (except fibreglass) is in the range 6-14%. The exposure times obtained show that erythemal damage could occur after long exposure to solar radiation through the materials studied, information which should be made available to the general public.<br />The authors wish to thank the Generalitat Valenciana for providing us with access to weather data.
- Subjects :
- Materials science
Spectral transmission
Ultraviolet Rays
030303 biophysics
Biophysics
Erythemal transmittance
02 engineering and technology
Radiation
NIR transmittance
medicine.disease_cause
UVA transmittance
03 medical and health sciences
Optics
Smoked glass
medicine
Transmittance
Humans
Radiology, Nuclear Medicine and imaging
Polycarbonate
Cholecalciferol
0303 health sciences
Radiological and Ultrasound Technology
business.industry
Near-infrared spectroscopy
Spectral transmittance
UVB transmittance
021001 nanoscience & nanotechnology
Glass material
Erythema
visual_art
FISICA APLICADA
visual_art.visual_art_medium
Sunlight
Methacrylates
Glass
Seasons
0210 nano-technology
business
Plastics
Ultraviolet
VIS transmittance
DNA Damage
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, instname
- Accession number :
- edsair.doi.dedup.....2785b5154434466463279c91f581e14c
- Full Text :
- https://doi.org/10.1016/j.jphotobiol.2020.111894