In addition to
the mercury in compact fluourescent lights (CFLs), another health
danger has emerged. “Our study
revealed that the response of healthy skin cells to UV emitted from
CFL bulbs is consistent with damage from ultraviolet radiation,”
said Professor Miriam Rafailovich, Ph.D, a co-author of the
heavily-credentialed team of four who published their results in the
Journal of Photochemistry
and Photobiology (Link). “Results
revealed significant levels of UVC and UVA, which appeared to
originate from cracks in the phosphor coatings, present
in all CFL bulbs studied.”
(emphasis added.)
“Skin
cell damage was further enhanced,” said Prof. Rafailovich, “when
low doses of TiO2 nanoparticles were introduced to the skin prior to
exposure.” TiO2 (titanium dioxide) nanoparticles are found in
personal care products normally used for UV protection. Rafailovich
noted that incandescent light of the same intensity had no effect on
healthy skin cells, with or without TiO2.
The researchers concluded that the CFL bulbs were
“safest when placed behind additional glass cover.” Shouldn't
the cost of that additional glass cover be included in a price
comparison with incandescents?—or do you think consumers should
just accept a less safe bulb in the name of the cost saving the CFL
advocates keeps touting?
It has long been known that CFLs emit high levels of UV,
but the danger to people was not previously known. CFL radiation,
however, was known to “damage oil paintings, photographs, acrylic
paintings, upholstery fabrics, furniture and flooring finishes. It
can not only fade colors in upholstery fabrics but actually weaken
the fibers.” See Link. Not surprisingly, the costs of such damage are
omitted in stories about all the money you save by switching to CFLs.
That same link also points out that the U.S. Consumer
Product Safety Commission has recalled CFLs for being a danger to
human health for other reasons. To date, that agency has, in four
separate orders, recalled 2,301,000 CFL bulbs because of danger of
fires, lacerations to people from flying glass from explosions or
shattering of CFLs for internal reasons during use, not from external
damage. There has not been a single recall of incandescent bulbs.
None of the CFL recalls pertained to mercury in the CFLs—though
that remains a health and environmental hazard for the future and
imposes significant disposal and transportation costs that are not
included in cost evaluations of CFLs. Incandescents do not have
these special costs because they can be safely tossed in regular
trash.
CFL advocates attempt to dismiss the dangers of mercury,
but few, if any, of them have read the shocking 160-page report by
the Maine Department of Environmental Protection, which even the
federal EPA regards as the most thorough investigation ever made of
the subject. You can read it here or find extracts of its most relevant points here.
It is worth noting, too, that on December 2, 2010, Germany's Federal
Environment Agency (UBA) reported mercury levels from broken CFLs
twenty time higher than regulations allow in the surrounding
area for up to five hours after breakage.
In a previous blog posting
(Link) I pointed out that in Minnesota, where I live, CFLs are a net
energy loser. The value of the heat lost in winter by replacing
incandescents with CFLs is far greater than the CFLs' saving on
energy. (A homeowner who replaces twenty incandescents with
60w-equivalent CFLs has lost 945 watts of heating, which must be
replaced by another source of heat.) The cost of air conditioning in
the summer is too meager to offset the seasonal benefit of heat
emitted by incandescents, which CFL advocates claim is just “wasted.”
There are other energy costs associated with CFLs that
are not included in pronouncements of how they conserve energy
resources, help to reduce greenhouse gases and save the planet from
overheating. For example, researchers
at the Technical University of Denmark found it took 1.8 kilowatt
hours (kWh) of electricity to manufacture a CFL compared to 0.11 kWh
for an incandescent bulb. In other words, it took 16 times more
energy to produce a CFL.
BC Hydro and Power
Authority is a Canadian electric utility that provides 86.3 percent
of the province's electric power. An official of the company has
stated: “Energy efficient bulbs increase greenhouse gases (GHGs).
Because they burn cooler, they cause home heating to rise."
Also, "Lighting regulations [banning incandescent lights] will
increase GHG emissions in Hydro's service territory by 45,000 tons
due to cross effects of a switch to cool-burning bulbs."
Over 90 percent of
CFLs are produced in China. Those who claim CFLs reduce the use of
fossil fuels never seem to include the fossil fuel needed to
transport CFLs 8,000 miles across the ocean to the U.S.
It
is worth contrasting how incandescents achieved widespread use
compared to CFLs which are displacing them. Incandescents were
cheaper than gas lights and did away with the flicker and smell of
gas lamps. CFLs are more expensive than incandescents and give off a
noxious odor when they burn out. Incandescents are safer for people
and the environment. To
the other safety concerns about CFLs, we must now add the skin damage
caused by ultraviolet radiation, with which we began this posting. All
the benefits of incandescent lighting were possible for millions of
people because they were free to buy products in the marketplace
without government intereference. If CFLs really were superior,
people would buy them without the government banning the competition.
That's why incandescents became so popular. Government cannot
"force" progress; it can only force people to buy inferior
products. The nanny state can never determine what is better for
people in their daily lives than what they decide for themselves.