An assessment of occupational exposures to ultraviolet radiation from transilluminator light boxes in the course of biomedical research procedures

Harper, Chavaun; Emery, Robert J.; Casserly, Dennis M.

doi:10.1016/j.jchas.2007.08.002

Cited by 5 publications

(5 citation statements)

References 7 publications

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“…Therefore level 1 BSC modification tools can be used and help work aseptically with UV light application for 30 minutes before use. 13 UV lights commonly used on the laminar flow biological safety cabinet are UV type C lamps 14 , This type of UV can kill or deactivate organisms such as bacteria and germs for the sterilization process. 14,15…”

Section: Resultsmentioning

confidence: 99%

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Effectiveness of class 1 biological safety cabinet modification on reducing air germ rate

Setiawan

Febriana

Martono³

et al. 2021

puinova

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Biological Safety Cabinet (BSC) in the form of a ventilated cupboard using a combination of High-Efficiency Particulate Air (HEPA) filtration system, laminar airflow, and containment to protect laboratory, product, and the environment from harmful biological agents. This research aims to determine the effect of level 1 BSC created to decrease the number of air germs in the laboratory. This study was an observational analytic using a cohort design. The research object is the number of air germs in standard Level 1 BSC Safe-tech ES 199 models and level 1 BSC created from a team in the laboratory. Data analysis using one-way ANOVA and independent t-test. One-way ANOVA test data shows the standard level 1 BSC Safe-tech ES 199 models and the creation of level 1 BSC used in 60 minutes and 90 minutes is the same as significant (p>0.05), while the duration of use for 120 minutes has a significant difference (p<0.05). Independent t-test analysis showed Sig (2-tailed) = 0.577, so there were no differences between the two tools during the 120-minute use. The creation of level 1 BSC can reduce the number of air germs.

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Section: Resultsmentioning

confidence: 99%

“…13 UV lights commonly used on the laminar flow biological safety cabinet are UV type C lamps 14 , This type of UV can kill or deactivate organisms such as bacteria and germs for the sterilization process. 14,15…”

Section: Resultsmentioning

confidence: 99%

Effectiveness of class 1 biological safety cabinet modification on reducing air germ rate

Setiawan

Febriana

Martono³

et al. 2021

puinova

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“…However, with the increase of the voltage, the amount rises to match the current study results. [ 37 ] The effective irradiance at the welders’ wrist was in the range 0.01–1.27 W/m 2 (1–127 μW/cm 2 ) under the study conditions. The corresponding permissible exposure time per day by the ACGIH was only 0.1–10 s, whereas in this study the welders’ daily average exposure to this ray was higher than the standard maximum; therefore, it may be expected that the welders in this industry would get harmed.…”

Section: Discussionmentioning

confidence: 98%

Assessment of health consequences of steel industry welders′ occupational exposure to ultraviolet radiation

et al. 2015

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Background:Welding is among the most important frequently used processes in the industry with a wide range of applications from the food industry to aerospace and from precision tools to shipbuilding. The aim of this study was to assess the level of steel industry welders’ exposure to ultraviolet (UV) radiation and to investigate the health impacts of these exposures.Methods:In this case–control study, we measured the intensity of UV at the workers’ wrist in Fars Steel Company through manufacture of different types of heavy metal structures, using UV-meter model 666230 made by Leybold Co., from Germany.Results:The population under the study comprised 400 people including 200 welders as the exposed group and 200 nonwelders as the unexposed group. The results of the questionnaire were analyzed using SPSS software, version 19. The average, standard deviation, maximum and minimum of the UV at the welders’ wrist were 0.362, 0.346, 1.27, and 0.01 μW/cm2, respectively. There was a significantly (P < 0.01) higher incidence of cataracts, keratoconjunctivitis, dermatitis and erythema in welders than in their nonwelders.Conclusions:This study showed that the time period of UV exposure in welders is higher than the permissible contact threshold level. Therefore, considering the outbreak of the eye and skin disorders in the welders, decreasing exposure time, reducing UV radiation level, and using personal protective equipment seem indispensable. As exposure to UV radiation can be linked to different types of skin cancer, skin aging, and cataract, welders should be advised to decrease their occupational exposures.

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“…Ultraviolet radiation is a non-ionizing radiation with wavelengths ranging from (100-400 nm) [1].The ultraviolet spectrum is divided into three bands; UV-A (315-400 nm), UV-B region (280-315 nm) and UV-C (100-280 nm) wavelengths [2]. In the electromagnetic spectrum, the wavelength to which the human eye is most sensitive is visible light (400-700 nm) [3].Sunlight reaches the Earth's surface after being absorbed by 30% of the atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Spectral and Optical Properties of Color Polarization LensesInvestigation of Spectral and Optical Properties of Color Polarization LensesInvestigation of Spectral and Optical Properties of Color Polarization Lenses

ATEŞ

2023

Journal of Physical Chemistry and Functional Materials

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Polarized lenses are recommended because exposure to intense sunlight damages cellular function and photoreceptor structures in the eyes. Polarized lenses filter all wavelengths of UV radiation and most of the reflected glare due to strong reflections depending on the angle of incidence of sunlight and environmental factors. The wavelength of mineral glass in the horizontal and vertical direction (~550nm) is 16.64% for (CF1) and 13.21% for (CF2). There is a sudden drop of 27.87 at 729nm in CF2 and a sudden increase to 58.80 at 730nm in CF1. Absorbance values at 730nm are 0.21 with a decrease in AF1 and 0.54 with an increase in AF2. CF2 is polarized. To determine how the structure of the lens material affects light transmittance and absorbance, the light transmittances of smoked mineral and organic lenses of the same color are 16.64 for the mineral lens and 22.47 for the organic lens at (~550nm) wavelength. Maximum transmittance is 81.25 for mineral lens and 85.73 for organic lens. For night vision, at (~507nm) wavelength, it is 19.35 for mineral lens and 25.00 for organic lens. At (~550nm) wavelength, absorbance values are 0.78 for mineral lens and 0.62 for organic smoked lens. In the study, the effect of color factor on the light transmittance and absorption of organic smoked, brown and green polarized lenses was investigated. Light transmittance at 550 nm wavelength is 22.47 in smoked, 13.48 in brown and 14.32 in green. Absorbance at 550 nm wavelength is 0.62 in smoked, 0.94 in brown and 0.82 in green lens. Since dark lenses do not allow high light transmission, smoked color should be chosen for good vision in the visible light region. Brown color should be preferred if dark glasses should be used in situations where bright light is intense. In the 507nm wavelength of color polarized lenses, smoked is 25.00, brown is 11.45 and green is 16.94. Smoked should be chosen for night vision.

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An assessment of occupational exposures to ultraviolet radiation from transilluminator light boxes in the course of biomedical research procedures

Cited by 5 publications

References 7 publications

Effectiveness of class 1 biological safety cabinet modification on reducing air germ rate

Effectiveness of class 1 biological safety cabinet modification on reducing air germ rate

Assessment of health consequences of steel industry welders′ occupational exposure to ultraviolet radiation

Investigation of Spectral and Optical Properties of Color Polarization LensesInvestigation of Spectral and Optical Properties of Color Polarization LensesInvestigation of Spectral and Optical Properties of Color Polarization Lenses

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