The use of conventional incandescent light bulb is now widely replaced by energy saving lamps. Besides spending a lower power, brighter lights also emit light. However, the researchers found that the energy saving lamps emit ultraviolet (UV) is dangerous.
In terms of industry and electricity, energy saving lamps also known as compact fluorescent light bulbs (CFL). A group of scientists from Stony Brook’s Advanced Energy Research and Technology Center (AERTC) and New York State Stem Cell Science (NYSTEM) has shown that CFLs emit ultraviolet (UV) which can harm human skin cells.
First of all, the researchers bought CFLs from different stores in two different districts. UV rays emitted by the lamp is then measured and compared. Visible light to penetrate the small cracks in the white phosphor coating on the inside of the glass bulb CFL. Glowing phosphor particles as a result of electrochemical reactions in the bulb.
The scientists then noted that the gap of phosphorus are found in all studied CFL. They also found the presence of UV light emitted from the significant level. A network of human skin cells and then exposed to the CFL and incandescent lamps konvensonal with the same brightness.
In addition, the nanoparticles are added to titanium dioxide (TiO2) on some skin cells. These chemicals are commonly used in sunscreen lotions to absorb UV rays.
“Our research shows that the response of healthy skin cells to UV light emitted from the CFL just as damage caused by ultraviolet radiation. Increasing skin cell damage when given low doses of TiO2 nanoparticles into cells of the skin prior to UV exposure,” said the researcher, Miriam Rafailovich as reported by the Examiner.com, Sunday (22/07/2012).
The researchers also found that a conventional incandescent light bulbs with the same intensity will not damage the cells healthy skin, either with or without the presence of TiO2. Incandescent bulbs do not emit UV radiation in significant numbers.
Previously, a study done of the European Commission Scientific Committee on Emerging named and Newly Identified Health Risks (SCENIHR) in 2008 has found that CFLs emit UV radiation. Findings of Europe recommends that exposure to long periods of time at short distances, ie less than 20 cm, should be set as the safe limits to protect the skin and damage the retina.
SCENHIR report concluded that installing an extra glass envelope around the CFL bulbs eliminate the effects of UV exposure risk. This opinion is also approved by the scientists of AERTC.
“Although it is saving energy, consumers should be careful when using CFLs. Our study shows that the best prevention is to avoid its use at close range and even safer when fitted with an additional cover glass,” added Rafailovich.
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