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Posts Tagged ‘carcinogenic’

Energy saving light bulbs ‘contain cancer causing chemicals’

April 20, 2011 1 comment

telegraph

Fears have been reignited about the safety of energy saving light bulbs after a group of scientists warned that they contain cancer causing chemicals.

Energy saving light bulbs

Scientists claim that several carcinogenic chemicals are released when energy saving light bulbs are switched on 
 
 

Their report advises that the bulbs should not be left on for extended periods, particularly near someone’s head, as they emit poisonous materials when switched on.

Peter Braun, who carried out the tests at the Berlin’s Alab Laboratory, said: “For such carcinogenic substances it is important they are kept as far away as possible from the human environment.”

The bulbs are already widely used in the UK following EU direction to phase out traditional incandescent lighting by the end of this year.

But the German scientists claimed that several carcinogenic chemicals and toxins were released when Read more…

Unregulated Toxin Present in Tap Water of 31 U.S. Cities

January 6, 2011 Comments off

California is the first state to consider a limit on the “Erin Brockovich” chemical, which has been found in 31 of 35 U.S. cities recently surveyed.

The tap water in many U.S. metropolitan areas was found to have higher-than-recommended levels of chromium-6, a known carcinogenic compound that is not regulated by any state or national agency, according to a study released this week by a public health research and lobbying organization.

The Environmental Working Group (EWG), who performed the study, estimated that 74 million Americans in 42 states drink chromium-polluted tap water, much of which is likely the cancer-causing chromium-6 form.

Chromium-6 comes from industrial processes used to manufacture pigments, dyes and chrome plating, in addition to commonly being discharged from steel and pulp mills. It is also used to tan leather and prevent corrosion.

The compound, also known as hexavalent chromium, is best known from the 2000 biographical film Erin Brockovich, starring Julia Roberts.

Brockovich helped to wage a class-action lawsuit against Pacific Gas & Electric Company for contaminating groundwater in Hinkley, California. The company had hired consultants to produce sham research to obscure the link between the chromium-6 and elevated cancer rates, but, in the end, the residents of Hinkley—where chromium-6 concentrations reached as high as 580 parts per billion (ppb), with natural background levels of 1.19 to 3.09 ppb—were awarded a $333 million settlement in 1996.

Water pollution U.S. United States Erin Brockovich Chemical Chromium-6 Toxin Cancer Carcinogen 

Image courtesy EWG
EWG commissioned testing for chromium-6 in tap water from 35 U.S. cities. Red dots indicate EWG’s test sites and measured hexavalent chromium concentrations in parts per billion (ppb). Size of dot reflects the level found. Brown-shaded areas represent population-adjusted average concentrations of total chromium by county, calculated from EWG’s national tap water database.

More recently, EWG commissioned laboratory tests of tap water from 35 U.S. cities, where previous testing by local utilities had shown high levels of “total chromium,” a measure that includes chromium-3, an essential nutrient for human glucose metabolism.

The average chromium-6 level of all 35 cities was 0.18 ppb, with samples from the city of Norman, Oklahoma registering the highest at 12.9 ppb. One part per billion is the equivalent of one faucet drip of pollutant in 66,000 gallons. Tests detected chromium-6 in samples from 31 cities, and 25 cities showed the toxic metal at concentrations above a 0.06 ppb limit being considered by regulators in California — the only state to require chromium testing.

The compound was undetected in:

  • Indianapolis, Indiana
  • San Antonio, Texas
  • Plano, Texas
  • Reno, Nevada Read more…